The 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 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]...
I 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!
i am using the combobox ajax control i in design time i am having an error:
there was an error rendering the control. Request is not available in the context.
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.
I 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?
I 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.
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 RepliesWhen 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?
I'm receiving the following error in DesignMode with the Accordion1 control. Not sure what is causing this. This is my ASP WebApp.Error Rendering Control - Accordion1 An unhandled exception has occurred. Collection was modified; enumeration operation may not execute.Any idea, what causes this error?Code VS 2005 Pro ASP Ajax XP SP3
View 3 RepliesWhy custom Gridview control not render html properlies under <Columns> properly in Visual Studio 2005?
For example:
[code]....
I am creating custom server control. I have two classes in project. One is main class that render control and another will be used to render content based on condition.I just want to know how to render content from other classes in main class.For example. This isjust an example.My main class code
[Code]....
My TopLeftPane class
[Code]....
My page code on page load event
[Code]....
When I run the page, Header title always getting null. This is a just sample code. I will have more than 20 classes so I dont want to write a code in main class to render whole control.I hope all of you understand my problem.
When I run my website in visual studio 2010, it works.When I deploy it in IIS, it doesn't work.
Can I find the settings of visual studio's web server?
can't connect to sql 2005 express sp1 and vs is also sp1. 2) Which my guess is because of the database connection not being able... design view is not able to pull in the application for design, it's as if there is no theme and css just white background and black print.
View 1 RepliesI got a project when after opening in visual studio 2005 in build mode drop down, only debug mode is shown but release mode not shown.Project builds successfully in debug mode is there a way to enable release mode.
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 created a custom control from scratch and it works fine as in you can build the project that uses it and it works fine at runtime. Problem is when you go to design view the control shows an error in the place of where the control should be rendered.
Error: '<SomeValue>' Could not be set to '<SomeProperty>'
This shows up on all my custom set properties. These properties are created as basic as possible. I can give the properties values in Source view and run the app just fine. I can even add a Onclick event. If I don't set any custom properties the control will render fine in Design view. It's only when I set a value to a custom property.
Property Code Example:
[Code]....
I've even removed the Category and Description tags with no difference.
I don't know if what I said makes sens, but I hope it does.
I seriously want to learn how to create a custom server control, for that I made a requirement for myself, but lost on how to accomplish it.
Requirement -I want to create a cascading dropdownlist control - which should have following properties -1) ConnectionString - used to get data for the 1st dropdown from database, and also it is used by 2nd DropDown to get data.2) 1stSelectCommand - Used by the 1st DropDown to get data from the database.3) 2ndWhereCommand - used by the 2nd DropDown - uses the selected value from the 1st DropDown in the where clause to get data.
Methods - 1) DropDown1_SelectedIndexChanged()2) DropDown2_SelectedIndexChanged(3) CustomCascading_Changed() - this happens when any of the DropDowns index changed.
PS - This is a random requirement, of course it got nothing to do with any project or real time.I want to learn, so i incorporated basic concepts like Data Access, Custom Methods, Properties etc.PPS - I know how to create basic custom server control, so plz dont forward me links to how to create basic custom server controls. But in case with extrordinary links.
I was referred here by MSDN forums hope this is the right place - I have a custom control (:WebControl) that renders web.sitemap in a specific way. While it runs error free and produces the expected result, at Design-Time it complains
[Code]....
and have tried the SiteMapDataProvider Tag with and without the SiteMapProvider
attribute.Does anybody have (a) any experience with this, or (b) any suggestions as to how to track down the problem?
I have developed a User Control in inline code model and convert this into dll and try to add it into Visual Studio ToolBox. It shows error "There is no component found in the object.". It is showing actually because i have not added ToolBoxData attribute just before the class declaration, because there is no class declaration in the inline code model. I don't know where i have to add ToolBoxData attribute.
View 1 Replies