Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
GetErrorDesignTimeHtml Method

ControlDesigner.GetErrorDesignTimeHtml Method

Retrieves the HTML markup that provides information about the specified exception.

Namespace: System.Web.UI.Design
Assembly: System.Design (in system.design.dll)

protected virtual string GetErrorDesignTimeHtml (
	Exception e
)
protected String GetErrorDesignTimeHtml (
	Exception e
)
protected function GetErrorDesignTimeHtml (
	e : Exception
) : String

Parameters

e

The exception that occurred.

Return Value

The design-time HTML markup for the specified exception.

The GetErrorDesignTimeHtml method is typically called, if an exception is thrown in the GetDesignTimeHtml method.

Notes to Inheritors The typical design pattern is to try to get HTML markup through the associated control, and then if an error is encountered, call the GetErrorDesignTimeHtml method. If no markup is returned by the control, call the GetEmptyDesignTimeHtml method, which if it is not overridden to provide specific markup, calls the CreatePlaceHolderDesignTimeHtml method, which should contain information about the type and ID of the control.

The following code example demonstrates how to generate design-time HTML markup for the control when an error occurs and call the CreatePlaceHolderDesignTimeHtml method.

// Generate the design-time markup for the control when an error occurs.
protected override string GetErrorDesignTimeHtml(Exception e) 
{
    // Write the error message text in red, bold.
    string errorRendering =
        "<span style=\"font-weight:bold; color:Red; \">" +
        e.Message + "</span>";

    return CreatePlaceHolderDesignTimeHtml(errorRendering);
} // GetErrorDesignTimeHtml

  • Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see .

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0
Show:
© 2015 Microsoft