After I imported a VS 2008 web project to VS 2010, I can't view aspx pages that have master pages in design mode. The page design mode displays "error creating control - contentplacehoder1 object reference not set to an instance of an object." The project builds and runs fine though. I have only one master page that all other aspx pages reference and I don't have any nested master pages.
View 2 RepliesI installed Visual Studio 2008 in my machine. Both c# and vb.net are working properly, but my problem is asp.net is not working. If we are taking a new website project there is no design mode in default.aspx means at the bottom there is no design, source, split. If we go to View->Design then one error message is popup that there is no editor available for this Default.aspx. Again in Tools->Options->Html Designer will shows that an error occurred loading this property page. My OS is Windows Xp Professional 2002, IIS is also checked on .I don't know what to do.....
View 1 RepliesIs there a way to know what parameters are needed by an event in Visual Studio 2010?Let's say I have a DropDownList control and I want to bind a method to the "OnSelectedIndexChanged", I would do something like thisn the ASPX File:
<asp:DropDownList ID="lstMyList" runat="server" OnSelectedIndexChanged="lstMyList_SelectedIndexChanged"></asp:DropDownList>
protected void lstMyList_SelectedIndexChanged(object sender, EventArgs e)
{
...
}
suppose i've created my own user control, and it has a textbox and a property for the textbox so that if i use the user control from within the aspx file, i can give the property a value. for example:
[Code]....
is it possible to also set the property to be seen via the desing mode , just as it works for other (built in) controls? maybe a different method to implement the same scenario?
if you still didn't understand what i mean : after setting the value of DefaultNum1 via the code i've written here, i expect the textbox associated with this property to be updated as well to '1' via the design mode (and split mode). of course it won't work using the current method, since VS cannot guess what is going on with the property and understand that all of its purpose is to assign an initialization value for the textbox.
i created an asp Table in the markup view and insert rows and cells with controls in them.
when i switch to the desing View, i can only choose the whole table,
how can i focus on the controls inside the table rows in the design view (i want to see their properties)?
Creating a .NET 3.5 website in 2010, and when I attempt to create public properties for a user control I whipped up it is giving me inline error:Visual Basic 9 does not support auto-implemented properties. I can, however, type GET on the next line 2010 populates the property just like it used to. However, when I expose a control property it craps out with a null reference error at runtime.
View 1 RepliesPossible Duplicates: Debug/Release difference Performance differences between debug and release builds
What exactly is the different in compiling and running an asp.net/c# project in Debug mode VS Release Mode?
I have a simple HttpHandler that generates a dynamic image based on query string parameters and a custom web control that renders an image tag pointing to the handler as its 'src' attribute. All works fine when run in the web server, but at design timethe control displays as the "missing image" icon (red x in a box). The handler is registered in the web.config with a ".ashx" extension. The RenderContents method in the control looks like this:
output.AddAttribute("src", ResolveUrl(string.Format("~/Sparklines.SparkHandler.ashx?stype=pm&w={0}&h={1}&sv={2}&ev={3}&cv={4}&sc={5}&ec={6}&mc={7}&gs={8}",
Width.IsEmpty ? 100 : Width.Value,
Height.IsEmpty ? 15 : Height.Value,
caleStart, ScaleEnd, CurrentValue,
ColorUtils.ColorString(StartColor, true),
[code]...
Visual Studio ( VSTS 2008 ) design mode work good for long time and from about 2 weeks ago it's suddenly stop view any thing in design mode i tried a lot with trying in another projects even in a simple web page but no way it's doesn't view any thing in design mode ... I think to reinstall VS 2008 again but I don't know if is there any outher solution for that ?
View 1 RepliesI have just downloaded Visual Web Developer Express 2008 and I am having problems getting basic features of the IDE to work.
In design mode for an aspx file:
1. The Split and Source tabs are not working.
2. I can not drag and drop controls from the Toolbox to the design surface.
As far I know this is not supported for asp.net projects. It's quite handy for testing static/shared functions.any info if this will be available in future versions? Or if there are any alternative ways to test your functions in design mode?
View 1 RepliesThis error only happens when I launch an existing application, if I create a new app the error does not appear on that site. However if I try to enter Design mode the Windows Installer opens and hangs. I can still edit the code and even launch the app.
If I click "OK", I get a dialog box that starts a Windows Installer that does not install anything, it justs sits there. If I "cancel" the installer, VWDE dies.
The only thing different on my laptop is that I had Office 2007 Trial installed along side Office 2003 before I installed VWD, I then uninstalled the trial and used the clean-up tool at [URL] to clean up the trial.
I have tried to repair VWDE, I have uninstalled and reinstalled VWDE with no change. Ialso have VB Express running and get no errors when launching it.
when i opened my Visual Studio 2010 i noticed that my ajax tab was missing from my toolbox and ajax control kit too.Then i noticed even that when i create new website, there is no web.config in it and it should be.WHAT IS GOIN ON???? :/
View 13 RepliesI use ResolveClientUrl to include css files in my page. When launched through web-server everything is OK, but in design mode css styles are not applied to the page. I use VS 2010 beta 2.
<link href= "<%= ResolveClientUrl("~/Styles/Site.css") %>" rel="stylesheet" type="text/css" />
Same thing happens when I use any expression to specify an url for css How can I fix it? Or is it a bug of beta?
Again, working with VS2010 and ASP.NET 4 I've run into a problem. Although my site seems to be working as it should, some of my pages in VS2010 show an error in design mode: ERROR Creating Control - xxxxxx. Request is not available in this context. I have shut down VS and reopened my site several times, same results. I have reviewed my code and can't find anything wrong.
View 6 RepliesThe method GetDesignTimeHtml of the ControlDesigner class should return html markup that will be shown on the page in design time. My problem is that control looks different in different versions of the visual studio. What is the rendering engine visual studio use to render control in design mode?
View 2 RepliesI upgraded to VWD Express 2010 and cannot edit text in the design view only the source view. Clicking on the design view takes to the code behind page.
If I create a test page without masterpages I can work in design view.
I am using Visual Studio 2010 and ASP.NET 4.0 to build a WebForms project that uses the new routing features in System.Web.Routing. When I build my solution and run it from within VS.NET's debugging environment only routes with RouteUrl's that include a ".aspx" extension are being properly routed to the PhysicalFile. It appears requests made to other URLs are not being "detected" by the routing engine for processing. In the case below, "Scenario1" shows a 404 and "Scenario2" works properly.
Here is the relevant code in my global.asax:
[code]....
I recently upgraded from VWD 2008 Express to VWD 2010 Express. A problem has developed in that the website's graphics no longer appear in Design mode, there are "Error Creating Control" error messages that did not exist before, and also debugging errors that did not exist before. (Note: these problems did not exist when I first used VWD 2010; they may have originated with recent automatic Windows updates (I use Vista Home Premium SP2 with IIS 7)). The problem exists if I open the website either as a project file or as a website directory.
View 1 RepliesSo I got a copy of Visual studio 2010 ultimate through my university and MSDN AA. I've been unable though to create any MVC2 projects in it. Even worse when I save my project from school and attempt to just open it at home I keep getting errors that it can't load the project (this included just open a basic empty project). I've tried a complete reinstall, and even manually downloading the MVC2 RC.
View 5 RepliesI am having an issue in VS 2010 trying to get even the default ASP.NET Web Application to run in Debug mode. I get the error:
"Unable to start program 'http://localhost:1443/Default.aspx'.
The system cannot find the file specified."
I am stumped here and cannot find anything out there with this error.
I installed the AJAX Toolkit (for .NET4) onto a new Toolbox tab in Visual Studio 2010. However, when I try to drag any of these controls onto my Web form in design mode, they won't stick. My mouse pointer changes to 'disabled' (a circle with a diagonal line thru the middle) as soon as it hovers anywhere over my target form. Is there some additional action I need to take to make VS "recognize" these AJAX Toolkit controls?
View 8 RepliesI am trying to add a database using VS2010, I have VS2010 Professional and SQL server 2008 developer and sql server 2008 express and it seems impossible for me to create a database am being sent to the linkid=125883 to download an express edition even though i have it installed.
View 2 RepliesI have looked at all the posts I can find on this problem and tried everything I can think of, but still the problem persists. I am getting really sick of it.was working fine for the last year until an update to MS Office 2007 caused a lot of problems (automatic update). After checking posts here, I removed it completely. No change. I then tried all the things I could find on other posts, also no change. Today, I removed VS and the Web Authoring Component and re-installed. Still no go.
Does anyone have a fix for this problem. It seems that it has been around a long time, but is still giving problems. I even saw one suggestion to reformat the drive! You've got to be joking!
When I make a simple change to a style property in a CSS class the change only effects the webform in design mode. It has no effect on the web form when viewed in a browser. Why?
I tried the Hotfix above "Design view does not update HTML" to no avail. Is there a 64 bit version of this hotfix?