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All day optimizer event....
- by noreply(at)blogger.com (Thomas Kyte)
I've recently taken over some of the responsibilities of Maria Colgan (also known as the "optimizer lady") so she can move onto supporting our new In Memory Database features (note her new twitter handle for that: https://twitter.com/db_inmemory ).To that end, I have two one day Optimizer classes scheduled this year (and more to follow next year!). The first one will be Wednesday November 20th in Northern California. You can find details for that here: http://www.nocoug.org/ .The next one will be 5,500 miles (about 8,800 km) away in the UK - in Manchester. That'll take place immediately following the UKOUG technical conference taking place the first week of December on December 5th. You can see all of the details for that here: http://www.ukoug.org/events/tom-kyte-seminar-2013/I know I'll be doing one in Belgrade early next year, probably the first week in April. Stay tuned for details on that and for more to come.Read the article
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Master Page: Dynamically Adding Rows in ASP Table on Button Click event
- by Vincent Maverick Durano
In my previous post here, I wrote an example that demonstrates how are we going to generate table rows dynamically using ASP Table on click of the Button control. Now based on some comments in my previous example and in the forums they wanted to implement it within Masterpage. Unfortunately the code in my previous example doesn't work in Masterpage for the following main reasons: The Table is dynamically added within the Form tag and so the TextBox control will not be generated correcty in the page. The data will not be retained on each and every postbacks because the SetPreviousData() method is looking for the Table element within the Page and not on the MasterPage. The Request.Form key value should be set correctly since all controls within the master page are prefixed with the naming containter ID to prevent duplicate ids on the final rendered HTML. For example the TextBox control with the ID of TextBoxRow will turn to ID to this ctl00$MainBody$TextBoxRow. In order for the previous example to work within Masterpage then we will have to correct those three main reasons above and this post will guide you how to correct it. Suppose we have this content page declaration below: <asp:Content ID="Content1" ContentPlaceHolderID="MainHead" Runat="Server"> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="MainBody" Runat="Server"> <asp:PlaceHolder ID="PlaceHolder1" runat="server"> <asp:Button ID="BTNAdd" runat="server" Text="Add New Row" OnClick="BTNAdd_Click" /> </asp:PlaceHolder> </asp:Content> As you notice I've added a PlaceHolder control within the MainBody ContentPlaceHolder. This is because we are going to generate the Table in the PlaceHolder instead of generating it within the Form element. Now since issue #1 is already corrected then let's proceed to the code beind part. Here are the full code blocks below: using System; using System.Web.UI; using System.Web.UI.WebControls; public partial class DynamicControlDemo : System.Web.UI.Page { private int numOfRows = 1; protected void Page_Load(object sender, EventArgs e) { //Generate the Rows on Initial Load if (!Page.IsPostBack) { GenerateTable(numOfRows); } } protected void BTNAdd_Click(object sender, EventArgs e) { if (ViewState["RowsCount"] != null) { numOfRows = Convert.ToInt32(ViewState["RowsCount"].ToString()); GenerateTable(numOfRows); } } private void SetPreviousData(int rowsCount, int colsCount) { Table table = (Table)this.Page.Master.FindControl("MainBody").FindControl("Table1"); // **** if (table != null) { for (int i = 0; i < rowsCount; i++) { for (int j = 0; j < colsCount; j++) { //Extracting the Dynamic Controls from the Table TextBox tb = (TextBox)table.Rows[i].Cells[j].FindControl("TextBoxRow_" + i + "Col_" + j); //Use Request object for getting the previous data of the dynamic textbox tb.Text = Request.Form["ctl00$MainBody$TextBoxRow_" + i + "Col_" + j];//***** } } } } private void GenerateTable(int rowsCount) { //Creat the Table and Add it to the Page Table table = new Table(); table.ID = "Table1"; PlaceHolder1.Controls.Add(table);//****** //The number of Columns to be generated const int colsCount = 3;//You can changed the value of 3 based on you requirements // Now iterate through the table and add your controls for (int i = 0; i < rowsCount; i++) { TableRow row = new TableRow(); for (int j = 0; j < colsCount; j++) { TableCell cell = new TableCell(); TextBox tb = new TextBox(); // Set a unique ID for each TextBox added tb.ID = "TextBoxRow_" + i + "Col_" + j; // Add the control to the TableCell cell.Controls.Add(tb); // Add the TableCell to the TableRow row.Cells.Add(cell); } // And finally, add the TableRow to the Table table.Rows.Add(row); } //Set Previous Data on PostBacks SetPreviousData(rowsCount, colsCount); //Sore the current Rows Count in ViewState rowsCount++; ViewState["RowsCount"] = rowsCount; } } As you observed the code is pretty much similar to the previous example except for the highlighted lines above. That's it! I hope someone find this post usefu! Technorati Tags: Dynamic Controls,ASP.NET,C#,Master PageRead the article
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Stream music from Laptop to iPod Touch over Wi-Fi
- by codeulike
Rather than running a long cable from my Laptop to my stereo, I've been thinking for a while about getting one of those wireless devices that lets you transmit audio from your PC to a receiver plugged into the stereo. Then I realised I already have hardware that can potentially do this - I have an iPod Touch, and a Wi-Fi network in the house. So, is there some iPod Touch App that will let the iPod act as a Wi-Fi music receiver? And presumably, a corresponding piece of broadcast software for my (Windows Vista) Laptop?Read the article
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Nodejs for processing js and Nginx for handling everything else
- by Kevin Parker
I am having a nodejs running on port 8000 and nginx on port 80 on same server. I want Nginx to handle all the requests(image,css,etc) and forward js requests to nodejs server on port 8000. Is it possible to achieve this. i have configured nginx as reverse proxy but its forwarding every request to nodejs but i want nginx to process all except js. nginx/sites-enabled/default/ upstream nodejs { server localhost:8000; #nodejs } location / { proxy_pass http://192.168.2.21:8000; proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504; proxy_redirect off; proxy_buffering off; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; }Read the article
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SQLAuthority News Virtual Launch Event for Office 2010 Contest Win MS Office License
Office products are integral products of any PC. I accept that without Office Suites, I can not survive or make enough leaving. I am blogger and use word to create my blogs. I am SQL Server Trainer and I use PowerPoint as my presentation tool. I am SQL Server consultant and I use Excel to [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.Read the article
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Thread safe GUI programming
- by James
I have been programming Java with swing for a couple of years now, and always accepted that GUI interactions had to happen on the Event Dispatch Thread. I recently started to use GTK+ for C applications and was unsurprised to find that GUI interactions had to be called on gtk_main. Similarly, I looked at SWT to see in what ways it was different to Swing and to see if it was worth using, and again found the UI thread idea, and I am sure that these 3 are not the only toolkits to use this model. I was wondering if there is a reason for this design i.e. what is the reason for keeping UI modifications isolated to a single thread. I can see why some modifications may cause issues (like modifying a list while it is being drawn), but I do not see why these concerns pass on to the user of the API. Is there a limit imposed by an operating system? Is there a good reason these concerns are not 'hidden' (i.e. some form of synchronization that is invisible to the user)? Is there any (even purely conceptual) way of creating a thread safe graphics library, or is such a thing actually impossible? I found this http://blogs.operationaldynamics.com/andrew/software/gnome-desktop/gtk-thread-awareness which seems to describe GTK differently to how I understood it (although my understanding was the same as many people's) How does this differ to other toolkits? Is it possible to implement this in Swing (as the EDT model does not actually prevent access from other threads, it just often leads to Exceptions)Read the article
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File Sync Solution for Batch Processing (ETL)
- by KenFar
I'm looking for a slightly different kind of sync utility - not one designed to keep two directories identical, but rather one intended to keep files flowing from one host to another. The context is a data warehouse that currently has a custom-developed solution that moves 10,000 files a day, some of which are 1+ gbytes gzipped files, between linux servers via ssh. Files are produced by the extract process, then moved to the transform server where a transform daemon is waiting to pick them up. The same process happens between transform & load. Once the files are moved they are typically archived on the source for a week, and the downstream process likewise moves them to temp then archive as it consumes them. So, my requirements & desires: It is never used to refresh updated files - only used to deliver new files. Because it's delivering files to downstream processes - it needs to rename the file once done so that a partial file doesn't get picked up. In order to simplify recovery, it should keep a copy of the source files - but rename them or move them to another directory. If the transfer fails (network down, file system full, permissions, file locked, etc), then it should retry periodically - and never fail in a non-recoverable way, or a way that sends the file twice or never sends the file. Should be able to copy files to 2+ destinations. Should have a consolidated log so that it's easy to find problems Should have an optional checksum feature Any recommendations? Can Unison do this well?Read the article
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Brand New Oracle WebLogic 12c Online Launch Event, December 1, 10am PT
- by B Shashikumar
The brand new WebLogic 12c will be launched on December 1st with a 2-hour global webcast highlighting salient capabilities and benefits and featuring Hasan Rizvi, SVP, Oracle Fusion Middleware and Java. For the more techie types, the 2nd hour will be a developer focused discussion including multiple demos and live Q&A. Please join us, with your fellow IT managers, architects, and developers, to hear how the new release of Oracle WebLogic Server is: Designed to help you seamlessly move into the public or private cloud with an open, standards-based platform Built to drive higher value for your current infrastructure and significantly reduce development time and cost Enhanced with transformational platforms and technologies such as Java EE 6, Oracle’s Active GridLink for RAC, Oracle Traffic Director, and Oracle Virtual Assembly BuilderRead the article
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Watch the Live Broadcast of the Silverlight 4 Launch Event
Want to be at DevConnections for the Silverlight 4 Launch but can;t make it? No worries, you can watch as Scott Guthrie launches Silverlight 4. Following the keynote you can watch Scott in special one hour edition of "Ask the Gu" along with other Silverlight folk like me to answer your questions on Channel 9 Live. To watch the keynotes and Channel 9 Live coverage head to http://live.ch9.ms on April 12th and 13th. Silverlight required, of course :) To be a part of the conversation...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.Read the article
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Saving user details on OnSuspending event for Metro Style Apps
- by nmarun
I recently started getting to know about Metro Style Apps on Windows 8. It looks pretty interesting so far and VS2011 definitely helps making it easier to learn and create Metro Style Apps. One of the features available for developers is the ability to save user data so it can be retrieved the next time the app is run after being closed by the user or even launched from back suspended state. Here’s a little history on this whole ‘suspended’ state of a Metro Style app: Once the user say, ‘alt+tab...(read more)Read the article
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Encoding video stream for playback on a vanilla Windows XP with mencoder
- by Tamás
I have a bunch of PNG files, generated from a script. They represent consecutive frames of a video sequence and I'd like to encode them into a single AVI file (or some other video format) using mencoder. What parameters should I use to ensure that the video can be viewed on a vanilla Windows XP using Windows Media Player with no extra codecs installed apart from the default ones? So far I've tried -ovc lavc -lavcopts vcodec=wmv2 and -ovc lavc -lavcopts vcodec=msmpeg4 with no success. (Background story: some of the people I'm collaborating with on a scientific project cannot install any codecs on their university computers without the help of the local sysadmins, who are of course not very willing to install anything. I'd like to ensure that they can also view the video files I am creating).Read the article
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How to find a hidden stream video/audio link and record it
- by Stan
I've been using 'URL snooper' to find the hidden streaming url. And feed that url to VLC to record streaming video/audio. But the VLC can't read those url. Then I also found that the url is like a floating url that changes every several hours. So the same audio station won't have same url. The streaming audio provider has bunches of audio stations and shuffle the link frequently. Is there any way to record the streaming media in this case? Please advise, thanks.Read the article
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Command line raw image processing tools in Linux?
- by ???
I'm wondering if there is any command to process raw images, for example, cat raw1.img | raw2jpg -w 640 -h 480 -pitch 1024 -pixelformat R8G8B8 and more examples: cat raw1.img raw2.img >y-merge.img tr='transpose -pitch 1024 -depth 24' cat <(cat raw1.img | $tr) <(cat raw2.img | $tr) | transpose -pitch 480 >x-merge.img and something like this: cat gamebitmap.dat | ( w=`readint32` h=`readint32` raw2png -w $w -h $h -depth 24 -pixelformat R8G8B8 ) | png2svg -extractoutline -fuzzy -error 8 -smooth Seems a little tricky, but is it possible? does ImageMagick support such raw formats?Read the article
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Design Patterns for Coordinating Change Event Listeners
- by mkraken
I've been working with the Observer pattern in JavaScript using various popular libraries for a number of years (YUI & jQuery). It's often that I need to observe a set of property value changes (e.g. respond only when 2 or more specific values change). Is there a elegant way to 'subscribe' the handler so that it is only called one time? Is there something I'm missing or doing wrong in my design?Read the article
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Brand New Oracle WebLogic 12c Online Launch Event, December 1, 10am PT
- by Ruma Sanyal
The brand new WebLogic 12c will be launched on December 1st with a 2-hour global webcast highlighting salient capabilities and benefits and featuring Hasan Rizvi, SVP, Fusion Middleware and Java. For the more techie types, the 2nd hour will be a developer focused discussion including multiple demos and live Q&A. Please join us, with your fellow IT managers, architects, and developers, to hear how the new release of Oracle WebLogic Server is: Designed to help you seamlessly move into the public or private cloud with an open, standards-based platform Built to drive higher value for your current infrastructure and significantly reduce development time and cost Enhanced with transformational platforms and technologies such as Java EE 6, Oracle’s Active GridLink for RAC, Oracle Traffic Director, and Oracle Virtual Assembly BuilderRead the article
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Brand New Oracle WebLogic 12c Online Launch Event, December 1, 10am PT
- by Ruma Sanyal
The brand new WebLogic 12c will be launched on December 1st with a 2-hour global webcast highlighting salient capabilities and benefits and featuring Hasan Rizvi, SVP, Fusion Middleware and Java. For the more techie types, the 2nd hour will be a developer focused discussion including multiple demos and live Q&A. Please join us, with your fellow IT managers, architects, and developers, to hear how the new release of Oracle WebLogic Server is: Designed to help you seamlessly move into the public or private cloud with an open, standards-based platform Built to drive higher value for your current infrastructure and significantly reduce development time and cost Enhanced with transformational platforms and technologies such as Java EE 6, Oracle’s Active GridLink for RAC, Oracle Traffic Director, and Oracle Virtual Assembly BuilderRead the article
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SCCM not processing hardware Inventory
- by Sreekumar
We have some workstations that will not import hardware inventory into the SCCM 2007 database. What I've done: Client - verified workstation object is discovered in SCCM - installed ccm client on workstation - manually ran hardware inventory action - verifed Inventory report was sent successfully "Successfully sent report Destination:mp:MP_HinvEndpoint, ID ..... - watched file on client enter and exit temp folder on client. - successfully ran MP Spy to verify client communicates with server - uninstalled client, deleted ccm and ccmsetup folders and reinstalled. Server - no entries in MP_Hinv.log file that coorespond with time stamp of workstation - no entries in dataldr.log file that coorespond with time stamp of workstation Where are these files going? All T/S blogs expect entries in these logs. This is driving me crazy.Read the article
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DDD9 - voting now open for the UK's premier community event
- by Liam Westley
If you are interested in software development including a heap of great open source frameworks, then get over to the DDD9 web site and vote for some sessions for the next DDD conference. It will take place at Microsoft's UK headquarters in Reading on 29th January 2011. http://developerdeveloperdeveloper.com/ddd9/ProposedSessions.aspx I've proposed a session on the new Async CTP announced at PDC, but there's loads more interesting stuff such as Ruby, CQRS and jQuery Mobile, so get your votes in now so it's the content you want to see.Read the article
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AD FS 2.0: Troubleshooting Event 364 and ThrowExceptionForHRInternal / NullReferenceException
- by Shawn Cicoria
Ran into a situation today where after AD FS federation server was installed, configured and up & running, “all of a sudden” it stopped working. Turned out that another installer that affected the default web site, also seemingly affected the AppPools associated to all Applications under the Default Web site. By changing the “Enable 32-bit Applications” either through IIS admin or via command line appcmd set apppool /apppool.name:MyAppPool /enable32BitAppOnWin64:false Back to normal…Read the article
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How much processing power is required while downloading data from a high speed internet connection (
- by avanish
I was just wondering about the CPU usage while downloading data (say, for example, a movie) from the internet. Can anyone tell me, how much is a processor really in use while downloading and, in the first place, is a processor even really required during download?Read the article
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Red Hat 5.4 slow processing
- by yucefrizk
I'm running Red Hat Linux 5.4 on HP DL580 server with 16 processors and 64 GB of RAM. I'm connecting to the server remotely through SSH. after entering the password, it takes time to return the command line, if I click ctrl+c during this time, I'll have the command line prompt but not the correct bash prompt (I have to run bash to pass to my correct prompt). I tried to install Apache on the server, ./configure took 4 hours to finish instead of 1 or two minutes, Oracle installation same behavior. Server Disks are mirrored using RAID controller. any idea what could be the reason of this slowness?Read the article
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Cannot start eventlog service
- by ANervousTwitch
On a windows 2k8R2 DC box the eventlog service wont start. When i try to start the service the machine returns: "Windows could not start the Windows Event Log service on Local Computer. Error 13: The data is invalid." event viewer wont open either. obviously, i dont have an event log for this error. ive already tried clearing the event logs. that didnt do anything. the other DC isnt experiencing this issue.Read the article
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Would you attend this type of event..
- by NeilHambly
Our User Groups events mostly are based on the same familiar formats and these work very well and I do enjoy these Immensely and participant in them as frequently as I'm able This generally follows the [1 or more selected speakers] and chosen topics {usually one of their specialities} presented for between 45-60 minutes, using the ubiquitous PowerPoint slides, along with a mixture of demos, add to that a dash of humour and a splash of passion & garnish it with the ever present swag {that...(read more)Read the article
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C# Com Late Binding Event
This article is a guide to building a .net component ,using it in a Vb6 project at runtime using late binding, attaching it's events and get a callback.Read the article