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• Problem with Efficient Gridview paging without datasource control

  - by Ronnie Overby

  I am trying to do efficient paging with a gridview without using a datasource control. By efficient, I mean I only retrieve the records that I intend to show. I am trying to use the PagerTemplate to build my pager functionality. In short, the problem is that if I bind only the records that I intend to show on the current page, the gridview doesn't render its pager template, so I don't get the paging controls. It's almost as if I MUST bind more records than I intend to show on a given page, which is not something I want to do.

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• c# winForms open forms inside mainform

  - by user508284

  Hello guys, I have programmed c# application i will post screenshot. In this main form is 3 buttons which opens different forms. Now i decided to modify this application I want to Make one main form with strip menu which will open this forms. I used this code but i don't like or i'm doing something wrong. I don't like because there is child controls(minimize, maximize, close) in parent (please see second picture ): Please advice me something. Is MDI good for such job? Thanks! Sell sell = new Sell(); sell.MdiParent = this; sell.Dock = DockStyle.Fill; sell.Show();`

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• Page Lifecycle - Using FindControl to reference a control created programatically during page load

  - by Jay Wilde

  Hi, I'm creating some text boxes on my form programatically which I need to reference later using FindControl. I've put the FindControl instruction in the page load method after the code which creates them but get an error: "Object reference not set to an instance of an object." I assume this is because the textbox controls are not created until later in the lifecycle and therefore cannot be referenced from within Page_Load. Can someone advise where in my code-behind I would need to place the FindControl instruction so that it can find these programatically created text boxes?

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• ASP.NET Error when referencing a code-behind variable

  - by mattgcon

  I have an aspx page that is supposed to reference a code-behind variable but I am receiving an error of "The name [variable] does not exist in the current context" Here is the aspx code <%@ Control Language="C#" AutoEventWireup="true" Inherits="IPAM.Website.Controls.controls_event_header" Codebehind="event_header.ascx.cs" %> <%# strEventLink %> <h3><%# strEventDate %></h3> <%# strLinks %> Here is part of the aspx.cs code declaring those variables: public string strEventLink = ""; public string strEventDate; public string strLinks = ""; Here is the part of the aspx.cs code where it sets those variables: strEventLink = "<h2>" + parent.Name + "</h2>"; strLinks += "<p><font size=\"+1\"><a href=\"" + Page.ResolveUrl("~" + strScheduleLink) + "\"><b>" + strScheduleLinkText + "</b></a></font></p>\n"; strEventDate = ei.DateSpan; Please help me with this problem

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• How can I change the name of a dynamic assembly after it has been created?

  - by Samuel Jack

  Is there any way to change the name of a dynamic assembly after it has been created? I'm using a framework that uses dynamic methods, and it is creating a dynamic assembly with the same name as my main assembly (which causes problems with WPF when it tries to load resources). So I need to find a workaround, and I thought of trying to change the name of the dynamic assembly. I've tried using GetName() and then setting the Name property, but it appears that GetName returns a clone of the name because my change doesn't stick. What else can I try?

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• I need to consume an ocx for voice recording and playblack

  - by reinaldo Crespo

  Hi. The current ocx controls I'm using for voice recording and playback are not compatible with Windows 7. I'm already feeling the pressure to produce a Windows 7 compatible version of my software. The author has already stated that he is not planning to write a Windows 7 compatible ocx. I work from xharbour so I need to consume an OCX or write the whole thing (which I'd like to avoid and don't even know where to start). My basic needs are (1) to record dictation from the microphone with methods to pause and vox preferably, (2) save to file, (3) and later playback with methods to ff and rew. Thank you, Reinaldo.

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• Dynamic adding of usercontrols not showing control on page

  - by Phil

  I am trying to insert a user control dynamically into my default.aspx page via the following method in the page_init: Dim control As UserControl = LoadControl("~\Modules\Content.ascx") Controls.Add(control) When I run the page there is no sign of the usercontrol. Am I using the correct code to insert the usercontrol? Is there an alternative method of insertion available? Does the fact that the usercontrol has a page_load make a difference? Do I need to register the control in my aspx page at design time? Thanks in advance for any assistance you can offer.

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• OpenLayers .containsPoint after pan

  - by Adrian

  I've seem to have hit a bug or i have overlooked something. I written some code that enumerates through all the vector features on a OpenLayers Vector layer - to check if the mouse is inside a vector feature - if so then it displays some info based on the feature. I had to write my own methods to do this because the existing OpenLayers Controls( select etc) stop after finding a feature under the mouse, and i the possibility of several features being stacked on top of one another. My problem is that the .containsPoint method seems to be using coords from before a 'pan'. After zooming in or out the geometry seems to be in the right place and .containsPoint is works correctly when I wave the mouse over the map. Do I need to do something after the map has been panned to update something( feature's geometry)

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• Add the Date Filter SharePoint webpart to an ASP.Net page

  - by Javaman59

  I want to add the out-of-the-box SharePoint date filter webpart to an ASP.Net web page. I want to do it either in an ASPX... <%@ Register Assembly="<DatePickerDLL??>" Namespace="<??>" TagPrefix="DP" %> <...> <asp:WebPartManager ID="WebPartManager1" runat="server"> </asp:WebPartManager> <...> <ZoneTemplate> <DP:<DatePickerWebPart??> ID="DatePicker" runat="server" /> or programmatically, in the ASPX.CS protected void Page_Load(object sender, EventArgs e) { this.Controls.Add(<Microsoft.Something.DatePicker??> }

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• How can I make a DateTimePicker display an empty string?

  - by brass-kazoo

  I would like to be able to display a DateTimePicker that has a default value of nothing, i.e. no date. For example, I have a start date dtTaskStart and an end date dtTaskEnd for a task, but the end date is not known, and not populated initially. I have specified a custom format of yyyy-MM-dd for both controls. Setting the value to null, or an empty string at runtime causes an error, so how can I accomplish this? I have considered using a checkbox to control the enabling of this field, but there is still the issue of displaying an initial value.. Edit: Arguably a duplicate of the question DateTimePicker Null Value (.NET), but the solution I found for my problem is not a solution for that question, so I think it should remain here for others to find..

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• Javascript undefined variable

  - by djairo

  I have a problem with a javascript error: $("#slider") is undefined How can i solve this problem? <script type="text/javascript"> $(document).ready(function() { $("#slider").easySlider({ controlsBefore: '<p id="controls">', controlsAfter: '</p>', prevId: 'prevBtn', nextId: 'nextBtn' }); }); </script> This is my html <div id='slider'> <table> <tr> <td width='325'>hello</td> <td width='325'>hello</td> </table> </div>

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• [C#] Onpaint events (invalidated) changing execution order after a period normal operation (runtime)

  - by Luke Mcneice

  Hi all, I have 3 data graphs that are painted via the their paint events. When I have data that I need to insert into the graph I call the controls invalidate() command. The first control's paint event actually creates a bitmap buffer for the other 2 graphs to avoid repeating a long loop. So the invalidate commands are in a specific order (1,2,3). This works well, however when the graphed data reaches the end of the graph window (PictureBox) where the data would normally start scrolling, the paint events begin firing in the wrong order (2,3,1). has anyone came across this before? why might this be happening?

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• How to check application is halt or working from a window service

  - by malik

  I have one WPF application and one windows service as watch dog. I want to check if my window application is halt or working fine. If it is halt i want to restart the application. I see Process.responding property but it is not working in my service. Any idea or other solution. Process[] myProcesses; myProcesses = Process.GetProcessesByName(ApplicationName); if (myProcesses.Length > 0) { foreach (Process proc in myProcesses) { _Logger.LogMessage("Check responding"); if (!proc.Responding)

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• Adding scrollbars to UserControl

  - by Bevin

  I am trying to add vertical and horizontal scrollbars to my UserControl with the HorizontalScroll and VerticalScroll properties, but I am having extreme issues. My problem arises when I drag or manipulate the scroll box on the bar. When I let it go, it simply jumps back to the start position! I know of the AutoScroll property, but I do not want to use it since I want to be able to control every aspect of my scrollbars, and I don't want it to be done automatically. Also, according to the documentation, AutoScroll is for "[enabling] the user to scroll to any controls placed outside of its visible boundaries" which isn't what I want. I just want scrollbars. ...aaand I suppose I could add VScrollBar and HScrollBar to the control, but why should I do this when the scroll functionality already exists? Seems like a waste to me.

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• I wanted to be a programmer

  - by Henrik P. Hessel

  Hello, let me ask your opinion. I'm 25 now, living in Germany. I started with QBASIC, did some Java in Highschool, and after School I created some Websites in PHP. Now, because my Company is Microsoft Gold Partner, I've to use Microsoft all the time. C#, MSSQL, ASPX and Sharepoint <- I really hate it! So, in my spare I concentrate to gain more knowledge (C++, Java, Silverlight or WPF), because it feels that I'm so far behind, in comparison for example to you guys, or other older employees in my company. Do think that my behaviour is useful? Should I focus my time to become i.e. a pure C# Programmer? I did C# even before I started to learn some C++. Should I learn what do with pointers, memcpy and stuff like that, even if managed code brings us so much benefits? Or is it a waste of time, better invested in learning the latest technologies? rAyt

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• Running Visual Studio 2008 and 2010 at the same time

  - by aip.cd.aish

  A group of us are working on a project which we built with .NET 3.5 in Visual Studio 2008. I want to test out Visual Studio 2010 and .NET 4 (well, mainly for WPF 4). I am just wondering if I install VS 2010, will I still be able to use VS 2008 to open the first project. I know when I open older projects made in VS 2003/2005, I get an upgrade wizard. I do not want to upgrade the first project to 2010, since that would probably mean every one else has to use it too. I have not done this before, is it possible to run both versions of Visual Studio, where each version opens its own projects (this may not even be an issue, but I just wanted someone to confirm this, so that I don't spend a lot of time trying to undo changes)?

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• Why does asp.net mvc form submits itself on button clicks when javascript function error?

  - by melaos

  hi guys, i'm new to the asp.net mvc, and while working on this, i used very basic asp.net mvc stuff like beginform, etc. i used a lot of jquery codes this round for client side validation, ajax data retrieval, and other gui works. and i used a combinations of html inputs buttons, etc and the asp.net mvc type of controls. what i noticed is that whenever i click on a button control, which sometimes are tied to either jquery oclick events, when there's a javascript error, the page will just go on and submit. why is this happening and what am i missing here? my bad for the dumb questions.. thanks

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• Java playback of 24 bit audio is incorrect

  - by Paul Hampson

  I am using the javax sound API to implement a simple console playback program based on http://www.jsresources.org/examples/AudioPlayer.html. Having tested it using a 24 bit ramp file (each sample is the last sample plus 1 over the full 24 bit range) it is evident that something odd is happening during playback. The recorded output is not the contents of the file (I have a digital loopback to verify this). It seems to be misinterpreting the samples in some way that causes the left channel to look like it is having some gain applied to it and the right channel looks like it is being attenuated. I have looked into whether the PAN and BALANCE controls need setting but these aren't available and I have checked the windows xp sound system settings. Any other form of playback of this ramp file is fine. If I do the same test with a 16bit file it performs correctly with no corruption of the stream. So does anyone have any idea why the Java Sound API is modifying my audio stream?

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• VB.Net: How to fill in a form in a website, then click at a button and download the file using webbr

  - by BasisBit

  I am using a WebBrowser-Control to fill in a webform and then click at a button, this currently results in a standard Download File Dialog (you get these if you download a file using internet explorer), but instead, I have to catch this file and save it automatically with a by me defined name to a specific folder. I am trying to code a little application in vb.net which download the Export-file from my wordpress-blog, and I want to do this completely without user-interaction. Currently everything works, except the downloading of the file. I tried to catch it with the event System.Windows.Controls.WebBrowser.Navigating(ByVal Object, ByVal System.Windows.Navigation.NavigatingCancelEventArgs) but I don't see where to download the file from :( I hope you guys can help me.

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• TreeView nodes always have .Checked=true on postback even when not checked in UI

  - by GISmatters

  I have a treeview in my .aspx: <asp:TreeView ID="tvDocCatAndType" runat="server" /> Not much else going on in the page -- two <asp:LinkButtons> and one <asp:Label>; the page is a child of a master page, so these controls are within a <asp:Content> control. I populate the treeview in code -- just 3 node levels, including the root node. All nodes have checkboxes, and I initialize all node.Checked to true. I have some Javascript to do the usual check/uncheck up and down the tree as parent and child node checkboxes are toggled. No matter how many checkboxes I clear in the UI, on postback every single node has node.Checked = true regardless of the state of the checkbox in the UI. This is not the first time I've used a treeview, but I've never had this problem before. I created this page by light adaptation of an earlier project that works fine. Thanks in advance for any helpful comments or questions, Chris

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• Choosing between ExtJS and YUI based of application parameters.

  - by Kabeer

  Hello. I need help in taking call to choose between Ext JS and YUI libraries. Here are the key factors I have derived from my application requirements & development process: Complex, windows forms like controls Widgets, Layouts, Utilities Inter widget communication Easy to extend Easy to learn Intuitive & concise coding Strong exception handling Active support / community To update with upcoming technologies (HTML5, etc.) Skins & Themes to be easy to change Skins & Themes to support variety (a text box for different context to appear differently) Support & Utilities for standard protocols (XmlHttp, JSON) Good performance (responsive) Cost is not crucial, but I don't mind saving :)

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• Changing system colors for a single application (Windows, .NET)

  - by Michal Czardybon

  I know I should generally avoid messing up with such system settings, but my application do already use nonstandard colors and I have no influence on that. I would like to be able to add standard .NET controls in some places, but their colors do not match. I would like to have a hack that would replace system colors for this one application. One more important thing to note is that it is a .NET application. My (incomplete) ideas so far were: To create a proxy User32.dll library with replaced GetSysColor, but it would be very tedious (731 functions to be redirected, 1 to be replaced) and I do not know how to force my application to use that particular copy. To intercept somehow invocations to GetSysColors (unfortunatelly it is somewhere in the CLR I think). To modify somehow .NET class SystemColors (in memory? is it possible?). Do you have any idea, what is the best (and complete) way to achieve this?

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• How can I enable Vista/Win 7 theming/style for a ToolTip control?

  - by Joakim Hårsman

  In Windows Vista and Windows 7, ToolTips have a new visual style or theme, they are shiny grey metallic. How can I enable the new style for a ToolTip control? Some controls, like ListViews and ToolBars, use the new tooltips automatically, but other tooltips are rendered with the old yellow XP style. I've tried sending an TTM_SETWINDOWTHEME message but nothing happens and I'm not sure what string I am supposed to use for the visual style name. SetWindowTheme doesn't work either, I've used it successfully on ListViews and TreeViews to set the "Explorer" style (see http://www.danielmoth.com/Blog/TreeViewVista.aspx), but that doesn't seem to work on ToolTips. I'm using the plain win32 C API.

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• Silverlight Project Not Updating When Ran

  - by Redburn

  I'm currently developing with VS2010 RC and Silverlight 4 and ran into small problem. My project when ran, would show a version I had built about 4 hours ago. (I built the project using the Business Template) The project itself will not update, meaning all the forms, and controls. I did the following: Restarted my computer Restarted Visual Studio Deleted the xap file in the ClientBin folder on the web side Deleted the Generated_Code folder on the client side Deleted the xap file from the Debug folder on the client side Opened the Solution's Configuration Manager and ensuring both my web and client projects are checked. Rebuilt, built, and cleaned every combination of the different projects and solution Is there a known bug or something else I can try?

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• .NET framework: new features

  - by Budda

  Few weaks ago I've changed target .NET framework for my application to the 4th version. Recently my resharper told me that my variable "MetaDescription" hides property 'string System.Web.UI.Page.MetaDescription' After small investigation the peace of code that worked earlier: HtmlMeta MetaDescription = new HtmlMeta(); MetaDescription.Attributes.Add("name", "description"); MetaDescription.Attributes.Add("content", ((IFriendlySEO)Page).DescriptionString); Header.Controls.Add(MetaDescription); was replaced with much more readable: MetaDescription = ((IFriendlySEO)Page).DescriptionString; (same for MetaKeywords). Question: is there any useful source that can give a list of such new features? Thanks.

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