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• WPF Custom TextBox ContextMenuOpening Problem

  - by Tom Allen

  I've got an issue with a custom control that I've written not firing it's ContextMenuOpening event when I hook it up programatically. The control is basically a wrapper for the standard TextBox: public class MyTextBox : TextBox { public MyTextBox() { this.ContextMenuOpening += new ContextMenuEventHandler(MyTextBox_ContextMenuOpening); } void MyTextBox_ContextMenuOpening(object sender, ContextMenuEventArgs e) { MessageBox.Show("ContextMenuOpening event fired"); } } There's nothing suspect either about the XAML: <local:MyTextBox Height="25" Width="300"/> For some reason though, I can never get the event to fire. I'm trying to intercept the context menu so I can alter it (it's context sensitive) and really am trying to avoid having to hook up the event everywhere the control is used - surely this is possible?

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• Building a Windows Phone 7 Twitter Application using Silverlight

  - by ScottGu

  On Monday I had the opportunity to present the MIX 2010 Day 1 Keynote in Las Vegas (you can watch a video of it here).  In the keynote I announced the release of the Silverlight 4 Release Candidate (we’ll ship the final release of it next month) and the VS 2010 RC tools for Silverlight 4.  I also had the chance to talk for the first time about how Silverlight and XNA can now be used to build Windows Phone 7 applications. During my talk I did two quick Windows Phone 7 coding demos using Silverlight – a quick “Hello World” application and a “Twitter” data-snacking application.  Both applications were easy to build and only took a few minutes to create on stage.  Below are the steps you can follow yourself to build them on your own machines as well. [Note: In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] Building a “Hello World” Windows Phone 7 Application First make sure you’ve installed the Windows Phone Developer Tools CTP – this includes the Visual Studio 2010 Express for Windows Phone development tool (which will be free forever and is the only thing you need to develop and build Windows Phone 7 applications) as well as an add-on to the VS 2010 RC that enables phone development within the full VS 2010 as well. After you’ve downloaded and installed the Windows Phone Developer Tools CTP, launch the Visual Studio 2010 Express for Windows Phone that it installs or launch the VS 2010 RC (if you have it already installed), and then choose “File”->”New Project.”  Here, you’ll find the usual list of project template types along with a new category: “Silverlight for Windows Phone”. The first CTP offers two application project templates. The first is the “Windows Phone Application” template - this is what we’ll use for this example. The second is the “Windows Phone List Application” template - which provides the basic layout for a master-details phone application: After creating a new project, you’ll get a view of the design surface and markup. Notice that the design surface shows the phone UI, letting you easily see how your application will look while you develop. For those familiar with Visual Studio, you’ll also find the familiar ToolBox, Solution Explorer and Properties pane. For our HelloWorld application, we’ll start out by adding a TextBox and a Button from the Toolbox. Notice that you get the same design experience as you do for Silverlight on the web or desktop. You can easily resize, position and align your controls on the design surface. Changing properties is easy with the Properties pane. We’ll change the name of the TextBox that we added to username and change the page title text to “Hello world.” We’ll then write some code by double-clicking on the button and create an event handler in the code-behind file (MainPage.xaml.cs). We’ll start out by changing the title text of the application. The project template included this title as a TextBlock with the name textBlockListTitle (note that the current name incorrectly includes the word “list”; that will be fixed for the final release.)  As we write code against it we get intellisense showing the members available.  Below we’ll set the Text property of the title TextBlock to “Hello “ + the Text property of the TextBox username: We now have all the code necessary for a Hello World application.  We have two choices when it comes to deploying and running the application. We can either deploy to an actual device itself or use the built-in phone emulator: Because the phone emulator is actually the phone operating system running in a virtual machine, we’ll get the same experience developing in the emulator as on the device. For this sample, we’ll just press F5 to start the application with debugging using the emulator.  Once the phone operating system loads, the emulator will run the new “Hello world” application exactly as it would on the device: Notice that we can change several settings of the emulator experience with the emulator toolbar – which is a floating toolbar on the top right.  This includes the ability to re-size/zoom the emulator and two rotate buttons.  Zoom lets us zoom into even the smallest detail of the application: The orientation buttons allow us easily see what the application looks like in landscape mode (orientation change support is just built into the default template): Note that the emulator can be reused across F5 debug sessions - that means that we don’t have to start the emulator for every deployment. We’ve added a dialog that will help you from accidentally shutting down the emulator if you want to reuse it.  Launching an application on an already running emulator should only take ~3 seconds to deploy and run. Within our Hello World application we’ll click the “username” textbox to give it focus.  This will cause the software input panel (SIP) to open up automatically.  We can either type a message or – since we are using the emulator – just type in text.  Note that the emulator works with Windows 7 multi-touch so, if you have a touchscreen, you can see how interaction will feel on a device just by pressing the screen. We’ll enter “MIX 10” in the textbox and then click the button – this will cause the title to update to be “Hello MIX 10”: We provide the same Visual Studio experience when developing for the phone as other .NET applications. This means that we can set a breakpoint within the button event handler, press the button again and have it break within the debugger: Building a “Twitter” Windows Phone 7 Application using Silverlight Rather than just stop with “Hello World” let’s keep going and evolve it to be a basic Twitter client application. We’ll return to the design surface and add a ListBox, using the snaplines within the designer to fit it to the device screen and make the best use of phone screen real estate.  We’ll also rename the Button “Lookup”: We’ll then return to the Button event handler in Main.xaml.cs, and remove the original “Hello World” line of code and take advantage of the WebClient networking class to asynchronously download a Twitter feed. This takes three lines of code in total: (1) declaring and creating the WebClient, (2) attaching an event handler and then (3) calling the asynchronous DownloadStringAsync method. In the DownloadStringAsync call, we’ll pass a Twitter Uri plus a query string which pulls the text from the “username” TextBox. This feed will pull down the respective user’s most frequent posts in an XML format. When the call completes, the DownloadStringCompleted event is fired and our generated event handler twitter_DownloadStringCompleted will be called: The result returned from the Twitter call will come back in an XML based format.  To parse this we’ll use LINQ to XML. LINQ to XML lets us create simple queries for accessing data in an xml feed. To use this library, we’ll first need to add a reference to the assembly (right click on the References folder in the solution explorer and choose “Add Reference): We’ll then add a “using System.Xml.Linq” namespace reference at the top of the code-behind file at the top of Main.xaml.cs file: We’ll then add a simple helper class called TwitterItem to our project. TwitterItem has three string members – UserName, Message and ImageSource: We’ll then implement the twitter_DownloadStringCompleted event handler and use LINQ to XML to parse the returned XML string from Twitter.  What the query is doing is pulling out the three key pieces of information for each Twitter post from the username we passed as the query string. These are the ImageSource for their profile image, the Message of their tweet and their UserName. For each Tweet in the XML, we are creating a new TwitterItem in the IEnumerable<XElement> returned by the Linq query.  We then assign the generated TwitterItem sequence to the ListBox’s ItemsSource property: We’ll then do one more step to complete the application. In the Main.xaml file, we’ll add an ItemTemplate to the ListBox. For the demo, I used a simple template that uses databinding to show the user’s profile image, their tweet and their username. <ListBox Height="521" HorizonalAlignment="Left" Margin="0,131,0,0" Name="listBox1" VerticalAlignment="Top" Width="476"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal" Height="132"> <Image Source="{Binding ImageSource}" Height="73" Width="73" VerticalAlignment="Top" Margin="0,10,8,0"/> <StackPanel Width="370"> <TextBlock Text="{Binding UserName}" Foreground="#FFC8AB14" FontSize="28" /> <TextBlock Text="{Binding Message}" TextWrapping="Wrap" FontSize="24" /> </StackPanel> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> Now, pressing F5 again, we are able to reuse the emulator and re-run the application. Once the application has launched, we can type in a Twitter username and press the  Button to see the results. Try my Twitter user name (scottgu) and you’ll get back a result of TwitterItems in the Listbox: Try using the mouse (or if you have a touchscreen device your finger) to scroll the items in the Listbox – you should find that they move very fast within the emulator.  This is because the emulator is hardware accelerated – and so gives you the same fast performance that you get on the actual phone hardware. Summary Silverlight and the VS 2010 Tools for Windows Phone (and the corresponding Expression Blend Tools for Windows Phone) make building Windows Phone applications both really easy and fun.  At MIX this week a number of great partners (including Netflix, FourSquare, Seesmic, Shazaam, Major League Soccer, Graphic.ly, Associated Press, Jackson Fish and more) showed off some killer application prototypes they’ve built over the last few weeks.  You can watch my full day 1 keynote to see them in action. I think they start to show some of the promise and potential of using Silverlight with Windows Phone 7.  I’ll be doing more blog posts in the weeks and months ahead that cover that more. Hope this helps, Scott

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• JSF invoke backing bean method and reRender components on ENTER key

  - by Markos Fragkakis

  Hi, I have a datatable with as search fields. I want a method on the backing bean to be invoked when ENTER key is pressed, as well as the DataTable to be re-rendered. My approach so far only works in IE 6, and 7, not in FF. This is the inputText: <h:inputText value="#{applicantProductListBean.applicantNameFilterValue}" id="applicantNameFilterValue" onkeypress="submitByEnter(event)"> </h:inputText> and this is the Javascript method I am invoking: function submitByEnter(e){ if(e.keyCode==13){ // alert("Enter was pressed"); e.returnValue=false; e.cancel=true; document.getElementById("applicantProductListForm:refreshButton").click(); } } As you can see, the Javascript method clicks on the button refresh, which exists on the page: <a4j:commandButton value="Refresh" id="refreshButton" action="#{applicantProductListBean.refreshData}" image="/images/icons/refresh48x48.gif" reRender="table, scroller"> </a4j:commandButton> The refreshData method does not return anything. As said before, this only works in IE 6 and IE 7. Does anyone know why it does not work in FF? An alternative I was considering was HotKey, which can indeed catch the event of ENTER, but it can only invoke Javascript, so it isn't appropriate. Is the proper way to do this via RichFaces or plain JSF? Cheers! UPDATE: Slightly modified the answer by BalusC, the script that works is: if (event.preventDefault) { // Firefox event.preventDefault(); } else { // IE event.returnValue = false; }

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• Flex, Papervision3d: basic scenes, cameras, planes issue

  - by user157880

  // Import Papervision3D import org.papervision3d.Papervision3D; import org.papervision3d.scenes.; import org.papervision3d.cameras.; import org.papervision3d.objects.; import org.papervision3d.materials.; public var scene:Scene3D; public var camera:Camera3D; public var target:DisplayObject3D; public var screenshotArray: Array;//array to store pictures public var radius:Number; public var image:Image; private function initPapervision():void { target= new DisplayObject3D(); camera= new Camera3D(target); 1067: Implicit coercion of a value of type org.papervision3d.objects:DisplayObject3D to an unrelated type Number. scene= new Scene3D(thisContainer); 1137: Incorrect number of arguments. Expected no more than 0. scene.addChild( new DisplayObject3D() , "center" ); } public function handleCreationComplete():void { image = new Image(); image.source = "one_t.jpg"; image.maintainAspectRatio = true; image.scaleContent = false; image.autoLoad = false; image.addEventListener(Event.COMPLETE, handleImageLoad); image.load(); initPapervision(); } public function handleImageLoad(event:Event):void { init3D(); // onEnterFrame addEventListener( Event.ENTER_FRAME, loop3D ); addEventListener( MouseEvent.MOUSE_MOVE , handleMouseMove); } public function init3D():void { addScreenshots(20); } public function handleMouseMove(event:MouseEvent):void { camera.y = Math.max( thisContainer.mouseY*5 , -450 ); } public function addScreenshots(planeCount:Number):void { var obj:DisplayObject3D = scene.getChildByName ("center"); screenshotArray = new Array(planeCount); var texture:BitmapData = new BitmapData(image.content.loaderInfo.width, image.content.loaderInfo.height, false, 0); texture.draw(image); // Create texture with a bitmap from the library var materialSpace :MaterialObject3D = new BitmapMaterial(texture); materialSpace.doubleSided = true; materialSpace.smooth = false; radius = 500; camera.z = radius + 50; camera.y = 50; for (var i:Number = 0; i < planeCount; i++ ) { screenshotArray[i] = new Object() <b>screenshotArray[i].plane = new Plane( materialSpace, 100, 100, 2, 2 );</b> 1180: Call to a possibly undefined method Plane. // Position plane var rotation:Number = (360/planeCount)* i ; var rotationRadians:Number = (rotation-90) * (Math.PI/180); screenshotArray[i].rotation = rotation; screenshotArray[i].plane.z = (radius * Math.cos(rotationRadians) ) * -1; screenshotArray[i].plane.x = radius * Math.sin(rotationRadians) * -1; screenshotArray[i].plane.y = 100; screenshotArray[i].plane.lookAt(obj); // Add to scene scene.addChild( screenshotArray[i].plane ); } <b>scene.renderCamera(camera);</b> <i>1061: Call to a possibly undefined method renderCamera through a reference with static type org.papervision3d.scenes:Scene3D.</i> } public function loop3D(event:Event):void { var obj:DisplayObject3D = scene.getChildByName ("center"); for (var i:Number = 0; i < screenshotArray.length ; i++ ) { var rotation:Number = screenshotArray[i].rotation; rotation += (thisContainer.mouseX/50)/(screenshotArray.length/10); var rotationRadians:Number = (rotation-90) * (Math.PI/180); screenshotArray[i].rotation = rotation; screenshotArray[i].plane.z = (radius * Math.cos(rotationRadians) ) * -1; screenshotArray[i].plane.x = radius * Math.sin(rotationRadians) * -1; screenshotArray[i].plane.lookAt(obj); } //now lets render the scene <b>scene.renderCamera(camera);</b> <i>1061: Call to a possibly undefined method renderCamera through a reference with static type org.papervision3d.scenes:Scene3D.</i> } ]]

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• flex 4: swfloader - how to mute game completly

  - by ufk

  Hiya. Ive read some answers here regarding muting swfloader volume but none of the examples would work in flex 4. I tried doinf the following: this._swfGame.source=url; this._swfGame.soundTransform = new SoundTransform(0.0); this would shut down the volume of the preloader, but when the game starts the volume is back to normal. i tried adding the following to the previous code: this._swfGame.addEventListener(Event.COMPLETE,this._configSwf); private function _configSwf(event:Event):void { this._swfGame.removeEventListener(Event.COMPLETE, _configSwf); var soundTransform:SoundTransform = new SoundTransform(0.0); // TODO: set proper volume this._swfGame.soundTransform = soundTransform; } but i got the same results. any ideas? thanks!

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• DirectX11 Swap Chain Format

  - by Nathan

  I was wondering if anyone could elaborate any further on something thats been bugging be me. In DirectX9 the main supported back buffer formats were D3DFMT_X8R8B8G8 and D3DFMT_A8R8G8B8 (Both being BGRA in layout). http://msdn.microsoft.com/en-us/library/windows/desktop/bb174314(v=vs.85).aspx With the initial version of DirectX10 their was no support for BGRA and all the textbooks and online tutorials recommend DXGI_FORMAT_R8G8B8A8_UNORM (being RGBA in layout). Now with DirectX11 BGRA is supported again and it seems as if microsoft recommends using a BGRA format as the back buffer format. http://msdn.microsoft.com/en-us/library/windows/apps/hh465096.aspx Is their any suggestions or are their performance implications of using one or the other. (I assume not as obviously by specifying the format of the underlying resource the runtime will handle what bits your passing through and than infer how to utilise them based on the format). Any feedback is appreciated.

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• Zoom on multiple areas in d3.js

  - by t2k32316

  I'm planning to have a geoJSON map inside my svg alongside other svg elements. I would like to be able to zoom (zoom+pan) in the map and keep the map in the same location with a bounding box. I can accomplish this by using a clipPath to keep the map within a rectangular area. The problem is that I also want to enable zooming and panning on my entire svg. If I do d3.select("svg").call(myzoom); this overrides any zoom I applied to my map. How can I apply zoom to both my entire svg and to my map? That is, I want to be able to zoom+pan on my map when my mouse is in the map's bounding box, and when the mouse is outside the bounding box, zoom+pan on the entire svg. Here's example code: http://bl.ocks.org/nuernber/aeaac0e8edcf7ca93ade. (how do I get around the cross domain issue to load the map?) <svg id="svg" width="640" height="480" xmlns="http://www.w3.org/2000/svg" version="1.1"> <defs> <clipPath id="rectClip"> <rect x="150" y="25" width="400" height="400" style="stroke: gray; fill: none;"/> </clipPath> </defs> <g id="outer_group"> <circle cx="100" cy="50" r="40" stroke="black" stroke-width="2" fill="red" /> <g id="svg_map" style="clip-path: url(#rectClip);"> </g> </g> </svg><br/> <script type="text/javascript"> var svg = d3.select("#svg_map"); var mapGroup = svg.append("g"); var projection = d3.geo.mercator(); var path = d3.geo.path().projection(projection); var zoom = d3.behavior.zoom() .translate(projection.translate()) .scale(projection.scale()) .on("zoom", zoomed); mapGroup.call(zoom); var pan = d3.behavior.zoom() .on("zoom", panned); d3.select("svg").call(pan); mapGroup.attr("transform", "translate(200,0) scale(2,2)"); d3.json("ne_110m_admin_0_countries/ne_110m_admin_0_countries.geojson", function(collection) { mapGroup.selectAll("path").data(collection.features) .enter().append("path") .attr("d", path) .attr("id", function(d) { return d.properties.name.replace(/\s+/g, "")}) .style("fill", "gray").style("stroke", "white").style("stroke-width",1); } ); function panned() { var x = d3.event.translate[0]; var y = d3.event.translate[1]; d3.select("#outer_group").attr("transform", "translate("+x+","+y+") scale(" + d3.event.scale + ")"); } function zoomed() { previousScale = d3.event.scale; projection.translate(d3.event.translate).scale(d3.event.scale); translationOffset = d3.event.translate; mapGroup.selectAll("path").attr("d", path); } </script>

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• naming conventions for buttons in user interface

  - by Samuel

  User interface for web applications in general contain various buttons for performing CRUD operations. What would be the suggested naming convention for button labels while performing the following actions.. User creation (Add User... or Add User or Add user) Event creation (Add Event... or Add Event or Add event) View users button (List All Users or List All users or List all users ) Most of the sites seem to contain the last option (e.g. Add user) where the first alphabet in the word is capitalized and rest all are lower case). What would be a better practice here?

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• XML/SOAP attributes for a complextype in kSOAP

  - by Soumya

  Hi, I'm trying to parse a SOAP response that contains nested ComplexTypes using the kSOAP library on Android 2.1. <event att1="value1" att2="value2" att3="value3"> <tag2> ... </tag2> <tag3> ... </tag3> </event> I've implemented my own class Event that implements org.ksoap2.serialization.KvmSerializable to parse this response. It is not clear to me if and how I can parse the attributes (att1, att2 and att3) of the event node. Is it even possible with the current kSOAP implementation? Thanks.

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• How do I INSERT INTO from one mysql table into another table and set the value of one column?

  - by Laxmidi

  Hi, I need to insert data from table1 into table2. However, I would like to set the myYear column in table2 to 2010. But, there isn't a myYear Column in table1. So, my basic insert looks like: INSERT INTO `table2` ( place, event ) SELECT place, event FROM table1 Roughly, I'd like to do something like the following: INSERT INTO `table2` ( place, event, SET myYear='2010' ) ... Is there a way to set the column value in the insert statement? THANK YOU! -Laxmidi

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• jquery ajax using 'addresses' to update url for bookmarking

  - by Jay

  $("document").ready(function(){ contM = $('#main-content'); contS = $('#second-content'); $(contM).hide(); $(contS).hide(); function loadURL(url) { console.log("loadURL: " + url); $.post(url,{post_loader: 1},{post_loader: 1}, function(data){ $(contM).html($(data)); $(contM).show(); }); } // Event handlers $.address.init(function(event) { console.log("init: " + $('[rel=address:' + event.value + ']').attr('href')); }).change(function(event) { $.post($('[rel=address:' + event.value + ']').attr('href'), {post_loader: 1}, function(data){ $(contM).html($(data)); $(contM).show(); }); console.log("change"); }) $('.update-main a').click(function(){ loadURL($(this).attr('href')); }); }); I'm using this code to make calls to a server to update the main content of a web page. Everything works fine in Google Chrome, but fails to execute properly in Firefox. The strange thing is that when I have the console open to monitor server communication, the application works fine, only when it is closed do problems occur : the script starts to communicate with the server, but before it receives the data the browser jumps to the source url. any ideas?

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• R2 is RTMd!

  - by DavidWimbush

  Check it out: http://www.microsoft.com/presspass/presskits/sqlserver/default.aspx No sign at MSDN downloads yet :(

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• Silverlight Cream for March 27, 2010 -- #822

  - by Dave Campbell

  In this Issue: MSDN, Bill Reiss, Charlie Kindel(-2-), SilverLaw, Scott Marlowe, Kenny Young, Andrea Boschin, Mike Taulty, Damon Payne, and Jeff Handley(-2-). Shoutouts: Scott Morrison has his material up for his talk at MIX 10: Silverlight 4 Business Applications Matthias Shapiro posted his MIX10 “Information Visualization in Silverlight” Slides and Code for MIX10 Information Visualization Talk Demos Dan Wahlin has his MIX10 material all posted as well: Syncing Audio, Video and Animations in Silverlight Timmy Kokke has an interesting MEF post up: Building extensions for Expression Blend 4 using MEF From SilverlightCream.com: How to: Add an Application Bar to Your Application In case you missed this MSDN post on adding an Application Bar to your WP7 app Simulating accelerometer data in the Windows Phone 7 emulator Got a Wii? How about a Wii remote? Bill Reiss shows how to use the Wii remote to simulate accelerometer data on the WP7 emulator ... really! Windows Phone 7 Series Icon Pack Charlie Kindel announced the release of a WP7 Icon pack ... great external MSDN link on using them as well. Windows Phone Developer Documentation Charlie Kindel also posted WP7 Documentation, and a quick overview of what you'll find ... samples, references, all good stuff to check out and download. GlossyTextblock Custom Control - Silverlight 3 SilverLaw has his GlossyTextblock rebuilt as a Custom Control and in the Expresseion Gallery. Check the blog for a screenshot. A Windows Phone 7 Silverlight TagList Scott Marlowe has a great post up for WP7 accessing his blog tag list via WCF and displaying the data on the emulator... wow! Dynamic Layout and Transitions in Expression Blend 4 Kenny Young has a great companion blog post to a demo app on Expression Gallery. There's also a link on the page to Kenny's MIX10 session Using XmlDefinition and XmlPrefix to better organize namespaces Andrea Boschin comes to our rescue about the maze of namespaces in XAML by using a solution from the RC: XmlDefinition and XmlPrefix Silverlight 4 RC – Socket Security Changes Mike Taulty is discussing changes in the RC with regard to sockets that have come about since he did his series of posts. Lots of good code. Cascading ItemsSource Bindings in Silverlight Damon Payne addresses an issue he came acros with multiple DataGrids on the same screen. He demonstrates the problem, and then demonstrates his solution. ContosoSales Application for RIA Services RC Jeff Handley posted about the refresh to the ContosoSales application shown in the PDC keynote, and details the changes. Lots of good code and links. DomainDataSource Filters and Parameters Jeff Handley has another post up about RIA Services and the fact that ControlParameter is gone... and he shows how to use ElementName binding instead. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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• Windows Azure Use Case: Fast Acquisitions

  - by BuckWoody

  This is one in a series of posts on when and where to use a distributed architecture design in your organization's computing needs. You can find the main post here: http://blogs.msdn.com/b/buckwoody/archive/2011/01/18/windows-azure-and-sql-azure-use-cases.aspx  Description: Many organizations absorb, take over or merge with other organizations. In these cases, one of the most difficult parts of the process is the merging or changing of the IT systems that the employees use to do their work, process payments, and even get paid. Normally this means that the two companies have disparate systems, and several approaches can be used to have the two organizations use technology between them. An organization may choose to retain both systems, and manage them separately. The advantage here is speed, and keeping the profit/loss sheets separate. Another choice is to slowly “sunset” or stop using one organization’s system, and cutting to the other system immediately or at a later date. Although a popular choice, one of the most difficult methods is to extract data and processes from one system and import it into the other. Employees at the transitioning system have to be trained on the new one, the data must be examined and cleansed, and there is inevitable disruption when this happens. Still another option is to integrate the systems. This may prove to be as much work as a transitional strategy, but may have less impact on the users or the balance sheet. Implementation: A distributed computing paradigm can be a good strategic solution to most of these strategies. Retaining both systems is made more simple by allowing the users at the second organization immediate access to the new system, because security accounts can be created quickly inside an application. There is no need to set up a VPN or any other connections than just to the Internet. Having the users stop using one system and start with the other is also simple in Windows Azure for the same reason. Extracting data to Azure holds the same limitations as an on-premise system, and may even be more problematic because of the large data transfers that might be required. In a distributed environment, you pay for the data transfer, so a mixed migration strategy is not recommended. However, if the data is slowly migrated over time with a defined cutover, this can be an effective strategy. If done properly, an integration strategy works very well for a distributed computing environment like Windows Azure. If the Azure code is architected as a series of services, then endpoints can expose the service into and out of not only the Azure platform, but internally as well. This is a form of the Hybrid Application use-case documented here. References: Designing for Cloud Optimized Architecture: http://blogs.msdn.com/b/dachou/archive/2011/01/23/designing-for-cloud-optimized-architecture.aspx 5 Enterprise steps for adopting a Platform as a Service: http://blogs.msdn.com/b/davidmcg/archive/2010/12/02/5-enterprise-steps-for-adopting-a-platform-as-a-service.aspx?wa=wsignin1.0

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• Scheduled task with windows services and system.timer.timer

  - by nccsbim071

  Hi i want implement a windows services scheduled task. I already created windows service. In a service i have implemented a timer.The timer is initialized at class interval. The timers interval is set in the start method of service and also it is enabled in the start method of the service. After timers elapsed event is fire i have done some actions. My problem is that, i am in a dilemma. Lets say the action i have done in Elapsed event, lets say take one hour and the timers interval is set to half an hour. so there are chances that even if the previous call to elapsed event has not ended new call to elapsed event will occur. my question will there be any conflict or is it ok or shall i use threads. please give some advice

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• onclick is blocked when input tag is disabled

  - by Itay Moav

  I need to have an onclick/hover event on an input tag which is disabled. Is there another way but to wrap it in another tag and give that tag the events? <input type="checkbox" onclick="cant_choose('event')" disabled="disabled" value="2" name="enroll_to[event][]">

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• Handling TclErrors in Python

  - by anteater7171

  In the following code I'll get the following error if I right click the window that pops up. Then go down to the very bottom entry widget then delete it's contents. It seems to be giving me a TclError. How do I go about handeling such an error? The Error Exception in Tkinter callback Traceback (most recent call last): File "C:\Python26\Lib\lib-tk\Tkinter.py", line 1410, in __call__ return self.func(*args) File "C:\Python26\CPUDEMO.py", line 503, in I TL.sclS.set(S1) File "C:\Python26\Lib\lib-tk\Tkinter.py", line 2765, in set self.tk.call(self._w, 'set', value) TclError: expected floating-point number but got "" The Code #F #PIthon.py # Import/Setup import Tkinter import psutil,time import re from PIL import Image, ImageTk from time import sleep class simpleapp_tk(Tkinter.Tk): def __init__(self,parent): Tkinter.Tk.__init__(self,parent) self.parent = parent self.initialize() def initialize(self): Widgets self.menu = Tkinter.Menu(self, tearoff = 0 ) M = [ "Options...", "Exit"] self.selectedM = Tkinter.StringVar() self.menu.add_radiobutton( label = 'Hide', variable = self.selectedM, command = self.E ) self.menu.add_radiobutton( label = 'Bump', variable = self.selectedM, command = self.E ) self.menu.add_separator() self.menu.add_radiobutton( label = 'Options...', variable = self.selectedM, command = self.E ) self.menu.add_separator() self.menu.add_radiobutton( label = 'Exit', variable = self.selectedM, command = self.E ) self.frame1 = Tkinter.Frame(self,bg='grey15',relief='ridge',borderwidth=4,width=185, height=39) self.frame1.grid() self.frame1.grid_propagate(0) self.frame1.bind( "<Button-3><ButtonRelease-3>", self.D ) self.frame1.bind( "<Button-2><ButtonRelease-2>", self.C ) self.frame1.bind( "<Double-Button-1>", self.C ) self.labelVariable = Tkinter.StringVar() self.label = Tkinter.Label(self.frame1,textvariable=self.labelVariable,fg="lightgreen",bg="grey15",borderwidth=1,font=('arial', 10, 'bold')) self.label.grid(column=1,row=0,columnspan=1,sticky='nsew') self.label.bind( "<Button-3><ButtonRelease-3>", self.D ) self.label.bind( "<Button-2><ButtonRelease-2>", self.C ) self.label.bind( "<Double-Button-1>", self.C ) self.F() self.overrideredirect(1) self.wm_attributes("-topmost", 1) global TL1 TL1 = Tkinter.Toplevel(self) TL1.wm_geometry("+0+5000") TL1.overrideredirect(1) TL1.button = Tkinter.Button(TL1,text="? CPU",fg="lightgreen",bg="grey15",activeforeground="lightgreen", activebackground='grey15',borderwidth=4,font=('Arial', 8, 'bold'),command=self.J) TL1.button.pack(ipadx=1) Events def Reset(self): self.label.configure(font=('arial', 10, 'bold'),fg='Lightgreen',bg='grey15',borderwidth=0) self.labela.configure(font=('arial', 8, 'bold'),fg='Lightgreen',bg='grey15',borderwidth=0) self.frame1.configure(bg='grey15',relief='ridge',borderwidth=4,width=224, height=50) self.label.pack(ipadx=38) def helpmenu(self): t2 = Tkinter.Toplevel(self) Tkinter.Label(t2, text='This is a help menu', anchor="w",justify="left",fg="darkgreen",bg="grey90",relief="ridge",borderwidth=5,font=('Arial', 10)).pack(fill='both', expand=1) t2.resizable(False,False) t2.title('Help') menu = Tkinter.Menu(self) t2.config(menu=menu) filemenu = Tkinter.Menu(menu) menu.add_cascade(label="| Exit |", menu=filemenu) filemenu.add_command(label="Exit", command=t2.destroy) def aboutmenu(self): t1 = Tkinter.Toplevel(self) Tkinter.Label(t1, text=' About:\n\n CPU Usage v1.0\n\n Publisher: Drew French\n Date: 05/09/10\n Email: [email protected] \n\n\n\n\n\n\n Written in Python 2.6.4', anchor="w",justify="left",fg="darkgreen",bg="grey90",relief="sunken",borderwidth=5,font=('Arial', 10)).pack(fill='both', expand=1) t1.resizable(False,False) t1.title('About') menu = Tkinter.Menu(self) t1.config(menu=menu) filemenu = Tkinter.Menu(menu) menu.add_cascade(label="| Exit |", menu=filemenu) filemenu.add_command(label="Exit", command=t1.destroy) def A (self,event): TL.entryVariable1.set(TL.sclY.get()) TL.entryVariable2.set(TL.sclX.get()) Y = TL.sclY.get() X = TL.sclX.get() self.wm_geometry("+" + str(X) + "+" + str(Y)) def B(self,event): Y1 = TL.entryVariable1.get() X1 = TL.entryVariable2.get() self.wm_geometry("+" + str(X1) + "+" + str(Y1)) TL.sclY.set(Y1) TL.sclX.set(X1) def C(self,event): s = self.wm_geometry() geomPatt = re.compile(r"(\d+)?x?(\d+)?([+-])(\d+)([+-])(\d+)") m = geomPatt.search(s) X3 = m.group(4) Y3 = m.group(6) M = int(Y3) - 150 P = M + 150 while Y3 > M: sleep(0.0009) Y3 = int(Y3) - 1 self.update_idletasks() self.wm_geometry("+" + str(X3) + "+" + str(Y3)) sleep(2.00) while Y3 < P: sleep(0.0009) Y3 = int(Y3) + 1 self.update_idletasks() self.wm_geometry("+" + str(X3) + "+" + str(Y3)) def D(self, event=None): self.menu.post( event.x_root, event.y_root ) def E(self): if self.selectedM.get() =='Options...': Setup global TL TL = Tkinter.Toplevel(self) menu = Tkinter.Menu(TL) TL.config(menu=menu) filemenu = Tkinter.Menu(menu) menu.add_cascade(label="| Menu |", menu=filemenu) filemenu.add_command(label="Instruction Manual...", command=self.helpmenu) filemenu.add_command(label="About...", command=self.aboutmenu) filemenu.add_separator() filemenu.add_command(label="Exit Options", command=TL.destroy) filemenu.add_command(label="Exit", command=self.destroy) helpmenu = Tkinter.Menu(menu) menu.add_cascade(label="| Help |", menu=helpmenu) helpmenu.add_command(label="Instruction Manual...", command=self.helpmenu) helpmenu.add_separator() helpmenu.add_command(label="Quick Help...", command=self.helpmenu) Title TL.label5 = Tkinter.Label(TL,text="CPU Usage: Options",anchor="center",fg="black",bg="lightgreen",relief="ridge",borderwidth=5,font=('Arial', 18, 'bold')) TL.label5.pack(padx=15,ipadx=5) X Y scale TL.separator = Tkinter.Frame(TL,height=7, bd=1, relief='ridge', bg='grey95') TL.separator.pack(pady=5,padx=5) # TL.sclX = Tkinter.Scale(TL.separator, from_=0, to=1500, orient='horizontal', resolution=1, command=self.A) TL.sclX.grid(column=1,row=0,ipadx=27, sticky='w') TL.label1 = Tkinter.Label(TL.separator,text="X",anchor="s",fg="black",bg="grey95",font=('Arial', 8 ,'bold')) TL.label1.grid(column=0,row=0, pady=1, sticky='S') TL.sclY = Tkinter.Scale(TL.separator, from_=0, to=1500, resolution=1, command=self.A) TL.sclY.grid(column=2,row=1,rowspan=2,sticky='e', padx=4) TL.label3 = Tkinter.Label(TL.separator,text="Y",fg="black",bg="grey95",font=('Arial', 8 ,'bold')) TL.label3.grid(column=2,row=0, padx=10, sticky='e') TL.entryVariable2 = Tkinter.StringVar() TL.entry2 = Tkinter.Entry(TL.separator,textvariable=TL.entryVariable2, fg="grey15",bg="grey90",relief="sunken",insertbackground="black",borderwidth=5,font=('Arial', 10)) TL.entry2.grid(column=1,row=1,ipadx=20, pady=10,sticky='EW') TL.entry2.bind("<Return>", self.B) TL.label2 = Tkinter.Label(TL.separator,text="X:",fg="black",bg="grey95",font=('Arial', 8 ,'bold')) TL.label2.grid(column=0,row=1, ipadx=4, sticky='W') TL.entryVariable1 = Tkinter.StringVar() TL.entry1 = Tkinter.Entry(TL.separator,textvariable=TL.entryVariable1, fg="grey15",bg="grey90",relief="sunken",insertbackground="black",borderwidth=5,font=('Arial', 10)) TL.entry1.grid(column=1,row=2,sticky='EW') TL.entry1.bind("<Return>", self.B) TL.label4 = Tkinter.Label(TL.separator,text="Y:", anchor="center",fg="black",bg="grey95",font=('Arial', 8 ,'bold')) TL.label4.grid(column=0,row=2, ipadx=4, sticky='W') TL.label7 = Tkinter.Label(TL.separator,text="Text Colour:",fg="black",bg="grey95",font=('Arial', 8 ,'bold')) TL.label7.grid(column=1,row=3,stick="W",ipady=10) TL.selectedP = Tkinter.StringVar() TL.opt1 = Tkinter.OptionMenu(TL.separator, TL.selectedP,'Normal', 'White','Black', 'Blue', 'Steel Blue','Green','Light Green','Yellow','Orange' ,'Red',command=self.G) TL.opt1.config(fg="black",bg="grey90",activebackground="grey90",activeforeground="black", anchor="center",relief="raised",direction='right',font=('Arial', 10)) TL.opt1.grid(column=1,row=4,sticky='EW',padx=20,ipadx=20) TL.selectedP.set('Normal') TL.label7 = Tkinter.Label(TL.separator,text="Refresh Rate:",fg="black",bg="grey95",font=('Arial', 8 ,'bold')) TL.label7.grid(column=1,row=5,stick="W",ipady=10) TL.sclS = Tkinter.Scale(TL.separator, from_=10, to=2000, orient='horizontal', resolution=10, command=self.H) TL.sclS.grid(column=1,row=6,ipadx=27, sticky='w') TL.sclS.set(650) TL.entryVariableS = Tkinter.StringVar() TL.entryS = Tkinter.Entry(TL.separator,textvariable=TL.entryVariableS, fg="grey15",bg="grey90",relief="sunken",insertbackground="black",borderwidth=5,font=('Arial', 10)) TL.entryS.grid(column=1,row=7,ipadx=20, pady=10,sticky='EW') TL.entryS.bind("<Return>", self.I) TL.entryVariableS.set(650) # TL.resizable(False,False) TL.title('Options') geomPatt = re.compile(r"(\d+)?x?(\d+)?([+-])(\d+)([+-])(\d+)") s = self.wm_geometry() m = geomPatt.search(s) X = m.group(4) Y = m.group(6) TL.sclY.set(Y) TL.sclX.set(X) if self.selectedM.get() == 'Exit': self.destroy() if self.selectedM.get() == 'Bump': s = self.wm_geometry() geomPatt = re.compile(r"(\d+)?x?(\d+)?([+-])(\d+)([+-])(\d+)") m = geomPatt.search(s) X3 = m.group(4) Y3 = m.group(6) M = int(Y3) - 150 P = M + 150 while Y3 > M: sleep(0.0009) Y3 = int(Y3) - 1 self.update_idletasks() self.wm_geometry("+" + str(X3) + "+" + str(Y3)) sleep(2.00) while Y3 < P: sleep(0.0009) Y3 = int(Y3) + 1 self.update_idletasks() self.wm_geometry("+" + str(X3) + "+" + str(Y3)) if self.selectedM.get() == 'Hide': s = self.wm_geometry() geomPatt = re.compile(r"(\d+)?x?(\d+)?([+-])(\d+)([+-])(\d+)") m = geomPatt.search(s) X3 = m.group(4) Y3 = m.group(6) M = int(Y3) + 5000 self.update_idletasks() self.wm_geometry("+" + str(X3) + "+" + str(M)) TL1.wm_geometry("+0+190") def F (self): G = round(psutil.cpu_percent(), 1) G1 = str(G) + '%' self.labelVariable.set(G1) try: S2 = TL.entryVariableS.get() except ValueError, e: S2 = 650 except NameError: S2 = 650 self.after(int(S2), self.F) def G (self,event): if TL.selectedP.get() =='Normal': self.label.config( fg = 'lightgreen' ) TL1.button.config( fg = 'lightgreen',activeforeground='lightgreen') if TL.selectedP.get() =='Red': self.label.config( fg = 'red' ) TL1.button.config( fg = 'red',activeforeground='red') if TL.selectedP.get() =='Orange': self.label.config( fg = 'orange') TL1.button.config( fg = 'orange',activeforeground='orange') if TL.selectedP.get() =='Yellow': self.label.config( fg = 'yellow') TL1.button.config( fg = 'yellow',activeforeground='yellow') if TL.selectedP.get() =='Light Green': self.label.config( fg = 'lightgreen' ) TL1.button.config( fg = 'lightgreen',activeforeground='lightgreen') if TL.selectedP.get() =='Normal': self.label.config( fg = 'lightgreen' ) TL1.button.config( fg = 'lightgreen',activeforeground='lightgreen') if TL.selectedP.get() =='Steel Blue': self.label.config( fg = 'steelblue1' ) TL1.button.config( fg = 'steelblue1',activeforeground='steelblue1') if TL.selectedP.get() =='Blue': self.label.config( fg = 'blue') TL1.button.config( fg = 'blue',activeforeground='blue') if TL.selectedP.get() =='Green': self.label.config( fg = 'darkgreen' ) TL1.button.config( fg = 'darkgreen',activeforeground='darkgreen') if TL.selectedP.get() =='White': self.label.config( fg = 'white' ) TL1.button.config( fg = 'white',activeforeground='white') if TL.selectedP.get() =='Black': self.label.config( fg = 'black') TL1.button.config( fg = 'black',activeforeground='black') def H (self,event): TL.entryVariableS.set(TL.sclS.get()) S = TL.sclS.get() def I (self,event): S1 = TL.entryVariableS.get() TL.sclS.set(S1) TL.sclS.set(TL.sclS.get()) S1 = TL.entryVariableS.get() TL.sclS.set(S1) def J (self): s = self.wm_geometry() geomPatt = re.compile(r"(\d+)?x?(\d+)?([+-])(\d+)([+-])(\d+)") m = geomPatt.search(s) X3 = m.group(4) Y3 = m.group(6) M = int(Y3) - 5000 self.update_idletasks() self.wm_geometry("+" + str(X3) + "+" + str(M)) TL1.wm_geometry("+0+5000") Loop if name == "main": app = simpleapp_tk(None) app.mainloop()

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• jquery ajax call from link loaded with ajax

  - by Jay

  //deep linking $("document").ready(function(){ contM = $('#main-content'); contS = $('#second-content'); $(contM).hide(); $(contM).addClass('hidden'); $(contS).hide(); $(contS).addClass('hidden'); function loadURL(URL) { //console.log("loadURL: " + URL); $.ajax({ url: URL, type: "POST", dataType: 'html', data: {post_loader: 1}, success: function(data){ $(contM).html(data); $(contM).animW(); } }); } // Event handlers $.address.init(function(event) { //console.log("init: " + $('[rel=address:' + event.value + ']').attr('href')); }).change(function(event) { $.ajax({ url: $('[rel=address:' + event.value + ']').attr('href'), type: "POST", dataType: 'html', data: {post_loader: 1}, success: function(data){ $(contM).html(data); $(contM).animW(); }}); //console.log("change"); }) $('.update-main a').live('click', function(){ loadURL($(this).attr('href')); }); $(".update-second a").live('click', function() { var link = $(this); $.ajax({ url: link.attr("href"), dataType: 'html', data: {post_loader: 1}, success: function(data){ $(contS).html(data); $(contS).animW(); }}); }); }); I'm using jquery and the 'addresses' plugin to load content with ajax and maintain pagination. The problem I'm having is some content loads with links which are intended to load content into a secondary window. I'm using the .live() method to allow jquery to listen for new links loaded into the primary content div. This works until the .ajax() method is called for these fresh links loaded with ajax, where the method begins, but follows the original link before data can be received. I'm assuming the problem is in the client-side scripting, but it may be a problem with the call made to the server. I'm using the wordpress loop to parse the url and generate the html loaded via jquery. Thanks for any tips!

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• Shouldn’t Bind() pass child control’s values to GridView before Page.PreRender?

  - by SourceC

  hello, For controls such as the GridView, DetailsView, and FormView controls, data-binding expressions are resolved automatically during the control's PreRender event But doesn’t data source control perform updates prior to Page.PreRender event? Meaning, shouldn’t Bind() pass child control’s values to GridView ( so they can be passed to data source control as parameters ) before data source control updates the data source, thus before Page.PreRender event? thanx

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• Windows Azure Use Case: Infrastructure Limits

  - by BuckWoody

  This is one in a series of posts on when and where to use a distributed architecture design in your organization's computing needs. You can find the main post here: http://blogs.msdn.com/b/buckwoody/archive/2011/01/18/windows-azure-and-sql-azure-use-cases.aspx  Description: Physical hardware components take up room, use electricity, create heat and therefore need cooling, and require wiring and special storage units. all of these requirements cost money to rent at a data-center or to build out at a local facility. In some cases, this can be a catalyst for evaluating options to remove this infrastructure requirement entirely by moving to a distributed computing environment. Implementation: There are three main options for moving to a distributed computing environment. Infrastructure as a Service (IaaS) The first option is simply to virtualize the current hardware and move the VM’s to a provider. You can do this with Microsoft’s Hyper-V product or other software, build the systems and host them locally on fewer physical machines. This is a good option for canned-applications (where you have to type setup.exe) but not as useful for custom applications, as you still have to license and patch those servers, and there are hard limits on the VM sizes. Software as a Service (SaaS) If there is already software available that does what you need, it may make sense to simply purchase not only the software license but the use of it on the vendor’s servers. Microsoft’s Exchange Online is an example of simply using an offering from a vendor on their servers. If you do not need a great deal of customization, have no interest in owning or extending the source code, and need to implement a solution quickly, this is a good choice. Platform as a Service (PaaS) If you do need to write software for your environment, your next choice is a Platform as a Service such as Windows Azure. In this case you no longer manager physical or even virtual servers. You start at the code and data level of control and responsibility, and your focus is more on the design and maintenance of the application itself. In this case you own the source code and can extend or change it as you see fit. An interesting side-benefit to using Windows Azure as a PaaS is that the Application Fabric component allows a hybrid approach, which gives you a basis to allow on-premise applications to leverage distributed computing paradigms. No one solution fits every situation. It’s common to see organizations pick a mixture of on-premise, IaaS, SaaS and PaaS components. In fact, that’s a great advantage to this form of computing - choice. References: 5 Enterprise steps for adopting a Platform as a Service: http://blogs.msdn.com/b/davidmcg/archive/2010/12/02/5-enterprise-steps-for-adopting-a-platform-as-a-service.aspx?wa=wsignin1.0  Application Patterns for the Cloud: http://blogs.msdn.com/b/kashif/archive/2010/08/07/application-patterns-for-the-cloud.aspx

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• Notification CeSetUserNotificationEx with custom sound

  - by inTagger

  Hail all! I want to display notification and play custom sound on my Windows Mobile 5/6 device. I have tried something like that, but my custom sound does not play, though message is displayed with standart sound. If i edit Wave key in [HKEY_CURRENT_USER\ControlPanel\Notifications{15F11F90-8A5F-454c-89FC-BA9B7AAB0CAD}] to sound file i need then it plays okay. But why there are flag NotificationAction.Sound and property UserNotification.Sound? It doesn't work. Also Vibration and Led don't work, if i use such flags. (You can obtain full project sources from http://dl.dropbox.com/u/1758206/Code/Thunder.zip) var trigger = new UserNotificationTrigger { StartTime = DateTime.Now + TimeSpan.FromSeconds(1), Type = NotificationType.ClassicTime }; var userNotification = new UserNotification { Sound = @"\Windows\Alarm1.wma", Text = "Hail from Penza, Russia!", Action = NotificationAction.Dialog | NotificationAction.Sound, Title = string.Empty, MaxSound = 16384 }; NotificationTools.SetUserNotification(0, trigger, userNotification); UserNotificationTrigger.cs: using System; using System.Runtime.InteropServices; namespace Thunder.Lib.ThunderMethod1 { /// <summary> /// Specifies the type of notification. /// </summary> public enum NotificationType { /// <summary> /// Equivalent to using the SetUserNotification function. /// The standard command line is supplied. /// </summary> ClassicTime = 4, /// <summary> /// System event notification. /// </summary> Event = 1, /// <summary> /// Time-based notification that is active for the time period between StartTime and EndTime. /// </summary> Period = 3, /// <summary> /// Time-based notification. /// </summary> Time = 2 } /// <summary> /// System Event Flags /// </summary> public enum NotificationEvent { None, TimeChange, SyncEnd, OnACPower, OffACPower, NetConnect, NetDisconnect, DeviceChange, IRDiscovered, RS232Detected, RestoreEnd, Wakeup, TimeZoneChange, MachineNameChange, RndisFNDetected, InternetProxyChange } /// <summary> /// Defines what event activates a notification. /// </summary> [StructLayout(LayoutKind.Sequential)] public class UserNotificationTrigger { internal int dwSize = 52; private int dwType; private int dwEvent; [MarshalAs(UnmanagedType.LPWStr)] private string lpszApplication = string.Empty; [MarshalAs(UnmanagedType.LPWStr)] private string lpszArguments; internal SYSTEMTIME stStartTime; internal SYSTEMTIME stEndTime; /// <summary> /// Specifies the type of notification. /// </summary> public NotificationType Type { get { return (NotificationType) dwType; } set { dwType = (int) value; } } /// <summary> /// Specifies the type of event should Type = Event. /// </summary> public NotificationEvent Event { get { return (NotificationEvent) dwEvent; } set { dwEvent = (int) value; } } /// <summary> /// Name of the application to execute. /// </summary> public string Application { get { return lpszApplication; } set { lpszApplication = value; } } /// <summary> /// Command line (without the application name). /// </summary> public string Arguments { get { return lpszArguments; } set { lpszArguments = value; } } /// <summary> /// Specifies the beginning of the notification period. /// </summary> public DateTime StartTime { get { return stStartTime.ToDateTime(); } set { stStartTime = SYSTEMTIME.FromDateTime(value); } } /// <summary> /// Specifies the end of the notification period. /// </summary> public DateTime EndTime { get { return stEndTime.ToDateTime(); } set { stEndTime = SYSTEMTIME.FromDateTime(value); } } } } UserNotification.cs: using System.Runtime.InteropServices; namespace Thunder.Lib.ThunderMethod1 { /// <summary> /// Contains information used for a user notification. /// </summary> [StructLayout(LayoutKind.Sequential)] public class UserNotification { private int ActionFlags; [MarshalAs(UnmanagedType.LPWStr)] private string pwszDialogTitle; [MarshalAs(UnmanagedType.LPWStr)] private string pwszDialogText; [MarshalAs(UnmanagedType.LPWStr)] private string pwszSound; private int nMaxSound; private int dwReserved; /// <summary> /// Any combination of the <see cref="T:Thunder.Lib.NotificationAction" /> members. /// </summary> /// <value>Flags which specifies the action(s) to be taken when the notification is triggered.</value> /// <remarks>Flags not valid on a given hardware platform will be ignored.</remarks> public NotificationAction Action { get { return (NotificationAction) ActionFlags; } set { ActionFlags = (int) value; } } /// <summary> /// Required if NotificationAction.Dialog is set, ignored otherwise /// </summary> public string Title { get { return pwszDialogTitle; } set { pwszDialogTitle = value; } } /// <summary> /// Required if NotificationAction.Dialog is set, ignored otherwise. /// </summary> public string Text { get { return pwszDialogText; } set { pwszDialogText = value; } } /// <summary> /// Sound string as supplied to PlaySound. /// </summary> public string Sound { get { return pwszSound; } set { pwszSound = value; } } public int MaxSound { get { return nMaxSound; } set { nMaxSound = value; } } } } NativeMethods.cs: using System; using System.Runtime.InteropServices; namespace Thunder.Lib.ThunderMethod1 { [StructLayout(LayoutKind.Sequential)] public struct SYSTEMTIME { public short wYear; public short wMonth; public short wDayOfWeek; public short wDay; public short wHour; public short wMinute; public short wSecond; public short wMillisecond; public static SYSTEMTIME FromDateTime(DateTime dt) { return new SYSTEMTIME { wYear = (short) dt.Year, wMonth = (short) dt.Month, wDayOfWeek = (short) dt.DayOfWeek, wDay = (short) dt.Day, wHour = (short) dt.Hour, wMinute = (short) dt.Minute, wSecond = (short) dt.Second, wMillisecond = (short) dt.Millisecond }; } public DateTime ToDateTime() { if ((((wYear == 0) && (wMonth == 0)) && ((wDay == 0) && (wHour == 0))) && ((wMinute == 0) && (wSecond == 0))) return DateTime.MinValue; return new DateTime(wYear, wMonth, wDay, wHour, wMinute, wSecond, wMillisecond); } } /// <summary> /// Specifies the action to take when a notification event occurs. /// </summary> [Flags] public enum NotificationAction { /// <summary> /// Displays the user notification dialog box. /// </summary> Dialog = 4, /// <summary> /// Flashes the LED. /// </summary> Led = 1, /// <summary> /// Dialog box z-order flag. /// Set if the notification dialog box should come up behind the password. /// </summary> Private = 32, /// <summary> /// Repeats the sound for 10–15 seconds. /// </summary> Repeat = 16, /// <summary> /// Plays the sound specified. /// </summary> Sound = 8, /// <summary> /// Vibrates the device. /// </summary> Vibrate = 2 } internal class NativeMethods { [DllImport("coredll.dll", CallingConvention = CallingConvention.Winapi, CharSet = CharSet.Unicode, SetLastError = true)] internal static extern int CeSetUserNotificationEx(int hNotification, UserNotificationTrigger lpTrigger, UserNotification lpUserNotification); } } NotificationTools.cs: using System.ComponentModel; using System.Runtime.InteropServices; namespace Thunder.Lib.ThunderMethod1 { public static class NotificationTools { /// <summary> /// This function modifies an existing user notification. /// </summary> /// <param name="handle">Handle of the Notification to be modified</param> /// <param name="trigger">A UserNotificationTrigger that defines what event activates a notification.</param> /// <param name="notification">A UserNotification that defines how the system should respond when a notification occurs.</param> /// <returns>Handle to the notification event if successful.</returns> public static int SetUserNotification(int handle, UserNotificationTrigger trigger, UserNotification notification) { int num = NativeMethods.CeSetUserNotificationEx(handle, trigger, notification); if (num == 0) throw new Win32Exception(Marshal.GetLastWin32Error(), "Error setting UserNotification"); return num; } } }

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• Binding multiple events in jQuery

  - by Lachlan McDonald

  I have a custom jQuery plugin which binds a change event to a form element, in this case some input elements. The change event is used to indicate to some other components that a change has taken place. This works as it should. However, I've come across the need to bind an additional change event to the same input elements -- so that additional components can act on the event. I don't wish to replace the plugin's change, simply run an additional function afterwards. Is there any way to bind multiple events in jQuery, or, what is the best method for accomplishing this?

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• SPSiteDataQuery Returns Only One List Type At A Time

  - by Brian Jackett

  The SPSiteDataQuery class in SharePoint 2007 is very powerful, but it has a few limitations.  One of these limitations that I ran into this morning (and caused hours of frustration) is that you can only return results from one list type at a time.  For example, if you are trying to query items from an out of the box custom list (list type = 100) and document library (list type = 101) you will only get items from the custom list (SPSiteDataQuery defaults to list type = 100.)  In my situation I was attempting to query multiple lists (created from custom list templates 10001 and 10002) each with their own content types. Solution     Since I am only able to return results from one list type at a time, I was forced to run my query twice with each time setting the ServerTemplate (translates to ListTemplateId if you are defining custom list templates) before executing the query.  Below is a snippet of the code to accomplish this. SPSiteDataQuery spDataQuery = new SPSiteDataQuery(); spDataQuery.Lists = "<Lists ServerTemplate='10001' />"; // ... set rest of properties for spDataQuery   var results = SPContext.Current.Web.GetSiteData(spDataQuery).AsEnumerable();   // only change to SPSiteDataQuery is Lists property for ServerTemplate attribute spDataQuery.Lists = "<Lists ServerTemplate='10002' />";   // re-execute query and concatenate results to existing entity results = results.Concat(SPContext.Current.Web.GetSiteData(spDataQuery).AsEnumerable());   Conclusion     Overall this isn’t an elegant solution, but it’s a workaround for a limitation with the SPSiteDataQuery.  I am now able to return data from multiple lists spread across various list templates.  I’d like to thank those who commented on this MSDN page that finally pointed out the limitation to me.  Also a thanks out to Mark Rackley for “name dropping” me in his latest article (which I humbly insist I don’t belong in such company)  as well as encouraging me to write up a quick post on this issue above despite my busy schedule.  Hopefully this post saves some of you from the frustrations I experienced this morning using the SPSiteDataQuery.  Until next time, Happy SharePoint’ing all.         -Frog Out   Links MSDN Article for SPSiteDataQuery http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spsitedataquery.lists.aspx

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• (infragistics) ultradropdown

  - by pjb

  using a ultradropdown control from infragistic, i want to capture the "Tab" key press and focus the control somewhere else right now i have tried -KeyPress event -KeyDown event //if (e.KeyChar == (char)Keys.Tab) //{ //i'm using sender to find out which control was tab out. // SmartFocusControl(sender); //} now this work for most of the keyboards press except "TAB" both event never get fired on "TAB" key press... wondering why... Thank you.

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• T-SQL Tuesday #53-Matt's Making Me Do This!

  - by Most Valuable Yak (Rob Volk)

  Hello everyone! It's that time again, time for T-SQL Tuesday, the wonderful blog series started by Adam Machanic (b|t). This month we are hosted by Matt Velic (b|t) who asks the question, "Why So Serious?", in celebration of April Fool's Day. He asks the contributors for their dirty tricks. And for some reason that escapes me, he and Jeff Verheul (b|t) seem to think I might be able to write about those. Shocked, I am! Nah, not really. They're absolutely right, this one is gonna be fun! I took some inspiration from Matt's suggestions, namely Resource Governor and Login Triggers.  I've done some interesting login trigger stuff for a presentation, but nothing yet with Resource Governor. Best way to learn it! One of my oldest pet peeves is abuse of the sa login. Don't get me wrong, I use it too, but typically only as SQL Agent job owner. It's been a while since I've been stuck with it, but back when I started using SQL Server, EVERY application needed sa to function. It was hard-coded and couldn't be changed. (welllllll, that is if you didn't use a hex editor on the EXE file, but who would do such a thing?) My standard warning applies: don't run anything on this page in production. In fact, back up whatever server you're testing this on, including the master database. Snapshotting a VM is a good idea. Also make sure you have other sysadmin level logins on that server. So here's a standard template for a logon trigger to address those pesky sa users: CREATE TRIGGER SA_LOGIN_PRIORITY ON ALL SERVER WITH ENCRYPTION, EXECUTE AS N'sa' AFTER LOGON AS IF ORIGINAL_LOGIN()<>N'sa' OR APP_NAME() LIKE N'SQL Agent%' RETURN; -- interesting stuff goes here GO   What can you do for "interesting stuff"? Books Online limits itself to merely rolling back the logon, which will throw an error (and alert the person that the logon trigger fired).  That's a good use for logon triggers, but really not tricky enough for this blog.  Some of my suggestions are below: WAITFOR DELAY '23:59:59';   Or: EXEC sp_MSforeach_db 'EXEC sp_detach_db ''?'';'   Or: EXEC msdb.dbo.sp_add_job @job_name=N'`', @enabled=1, @start_step_id=1, @notify_level_eventlog=0, @delete_level=3; EXEC msdb.dbo.sp_add_jobserver @job_name=N'`', @server_name=@@SERVERNAME; EXEC msdb.dbo.sp_add_jobstep @job_name=N'`', @step_id=1, @step_name=N'`', @command=N'SHUTDOWN;'; EXEC msdb.dbo.sp_start_job @job_name=N'`';   Really, I don't want to spoil your own exploration, try it yourself!  The thing I really like about these is it lets me promote the idea that "sa is SLOW, sa is BUGGY, don't use sa!".  Before we get into Resource Governor, make sure to drop or disable that logon trigger. They don't work well in combination. (Had to redo all the following code when SSMS locked up) Resource Governor is a feature that lets you control how many resources a single session can consume. The main goal is to limit the damage from a runaway query. But we're not here to read about its main goal or normal usage! I'm trying to make people stop using sa BECAUSE IT'S SLOW! Here's how RG can do that: USE master; GO CREATE FUNCTION dbo.SA_LOGIN_PRIORITY() RETURNS sysname WITH SCHEMABINDING, ENCRYPTION AS BEGIN RETURN CASE WHEN ORIGINAL_LOGIN()=N'sa' AND APP_NAME() NOT LIKE N'SQL Agent%' THEN N'SA_LOGIN_PRIORITY' ELSE N'default' END END GO CREATE RESOURCE POOL SA_LOGIN_PRIORITY WITH ( MIN_CPU_PERCENT = 0 ,MAX_CPU_PERCENT = 1 ,CAP_CPU_PERCENT = 1 ,AFFINITY SCHEDULER = (0) ,MIN_MEMORY_PERCENT = 0 ,MAX_MEMORY_PERCENT = 1 -- ,MIN_IOPS_PER_VOLUME = 1 ,MAX_IOPS_PER_VOLUME = 1 -- uncomment for SQL Server 2014 ); CREATE WORKLOAD GROUP SA_LOGIN_PRIORITY WITH ( IMPORTANCE = LOW ,REQUEST_MAX_MEMORY_GRANT_PERCENT = 1 ,REQUEST_MAX_CPU_TIME_SEC = 1 ,REQUEST_MEMORY_GRANT_TIMEOUT_SEC = 1 ,MAX_DOP = 1 ,GROUP_MAX_REQUESTS = 1 ) USING SA_LOGIN_PRIORITY; ALTER RESOURCE GOVERNOR WITH (CLASSIFIER_FUNCTION=dbo.SA_LOGIN_PRIORITY); ALTER RESOURCE GOVERNOR RECONFIGURE;   From top to bottom: Create a classifier function to determine which pool the session should go to. More info on classifier functions. Create the pool and provide a generous helping of resources for the sa login. Create the workload group and further prioritize those resources for the sa login. Apply the classifier function and reconfigure RG to use it. I have to say this one is a bit sneakier than the logon trigger, least of all you don't get any error messages.  I heartily recommend testing it in Management Studio, and click around the UI a lot, there's some fun behavior there. And DEFINITELY try it on SQL 2014 with the IO settings included!  You'll notice I made allowances for SQL Agent jobs owned by sa, they'll go into the default workload group.  You can add your own overrides to the classifier function if needed. Some interesting ideas I didn't have time for but expect you to get to before me: Set up different pools/workgroups with different settings and randomize which one the classifier chooses Do the same but base it on time of day (Books Online example covers this)... Or, which workstation it connects from. This can be modified for certain special people in your office who either don't listen, or are attracted (and attractive) to you. And if things go wrong you can always use the following from another sysadmin or Dedicated Admin connection: ALTER RESOURCE GOVERNOR DISABLE;   That will let you go in and either fix (or drop) the pools, workgroups and classifier function. So now that you know these types of things are possible, and if you are tired of your team using sa when they shouldn't, I expect you'll enjoy playing with these quite a bit! Unfortunately, the aforementioned Dedicated Admin Connection kinda poops on the party here.  Books Online for both topics will tell you that the DAC will not fire either feature. So if you have a crafty user who does their research, they can still sneak in with sa and do their bidding without being hampered. Of course, you can still detect their login via various methods, like a server trace, SQL Server Audit, extended events, and enabling "Audit Successful Logins" on the server.  These all have their downsides: traces take resources, extended events and SQL Audit can't fire off actions, and enabling successful logins will bloat your error log very quickly.  SQL Audit is also limited unless you have Enterprise Edition, and Resource Governor is Enterprise-only.  And WORST OF ALL, these features are all available and visible through the SSMS UI, so even a doofus developer or manager could find them. Fortunately there are Event Notifications! Event notifications are becoming one of my favorite features of SQL Server (keep an eye out for more blogs from me about them). They are practically unknown and heinously underutilized.  They are also a great gateway drug to using Service Broker, another great but underutilized feature. Hopefully this will get you to start using them, or at least your enemies in the office will once they read this, and then you'll have to learn them in order to fix things. So here's the setup: USE msdb; GO CREATE PROCEDURE dbo.SA_LOGIN_PRIORITY_act WITH ENCRYPTION AS DECLARE @x XML, @message nvarchar(max); RECEIVE @x=CAST(message_body AS XML) FROM SA_LOGIN_PRIORITY_q; IF @x.value('(//LoginName)[1]','sysname')=N'sa' AND @x.value('(//ApplicationName)[1]','sysname') NOT LIKE N'SQL Agent%' BEGIN -- interesting activation procedure stuff goes here END GO CREATE QUEUE SA_LOGIN_PRIORITY_q WITH STATUS=ON, RETENTION=OFF, ACTIVATION (PROCEDURE_NAME=dbo.SA_LOGIN_PRIORITY_act, MAX_QUEUE_READERS=1, EXECUTE AS OWNER); CREATE SERVICE SA_LOGIN_PRIORITY_s ON QUEUE SA_LOGIN_PRIORITY_q([http://schemas.microsoft.com/SQL/Notifications/PostEventNotification]); CREATE EVENT NOTIFICATION SA_LOGIN_PRIORITY_en ON SERVER WITH FAN_IN FOR AUDIT_LOGIN TO SERVICE N'SA_LOGIN_PRIORITY_s', N'current database' GO   From top to bottom: Create activation procedure for event notification queue. Create queue to accept messages from event notification, and activate the procedure to process those messages when received. Create service to send messages to that queue. Create event notification on AUDIT_LOGIN events that fire the service. I placed this in msdb as it is an available system database and already has Service Broker enabled by default. You should change this to another database if you can guarantee it won't get dropped. So what to put in place for "interesting activation procedure code"?  Hmmm, so far I haven't addressed Matt's suggestion of writing a lengthy script to send an annoying message: SET @[email protected]('(//HostName)[1]','sysname') + N' tried to log in to server ' + @x.value('(//ServerName)[1]','sysname') + N' as SA at ' + @x.value('(//StartTime)[1]','sysname') + N' using the ' + @x.value('(//ApplicationName)[1]','sysname') + N' program. That''s why you''re getting this message and the attached pornography which' + N' is bloating your inbox and violating company policy, among other things. If you know' + N' this person you can go to their desk and hit them, or use the following SQL to end their session: KILL ' + @x.value('(//SPID)[1]','sysname') + N'; Hopefully they''re in the middle of a huge query that they need to finish right away.' EXEC msdb.dbo.sp_send_dbmail @recipients=N'[email protected]', @subject=N'SA Login Alert', @query_result_width=32767, @body=@message, @query=N'EXEC sp_readerrorlog;', @attach_query_result_as_file=1, @query_attachment_filename=N'UtterlyGrossPorn_SeriouslyDontOpenIt.jpg' I'm not sure I'd call that a lengthy script, but the attachment should get pretty big, and I'm sure the email admins will love storing multiple copies of it.  The nice thing is that this also fires on Dedicated Admin connections! You can even identify DAC connections from the event data returned, I leave that as an exercise for you. You can use that info to change the action taken by the activation procedure, and since it's a stored procedure, it can pretty much do anything! Except KILL the SPID, or SHUTDOWN the server directly.  I'm still working on those.

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