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WebFormsRootDesigner.GenerateErrorDesignTimeHtml Method

Generates HTML markup that is used to display an error message at design time by using the specified control, exception, and message.

Namespace:  System.Web.UI.Design
Assembly:  System.Design (in System.Design.dll)
public virtual string GenerateErrorDesignTimeHtml(
	Control control,
	Exception e,
	string errorMessage


Type: System.Web.UI.Control

The control that raised the exception.



Type: System.Exception

The exception.



Type: System.String

A message to add to the exception message.


An empty string ("").

Return Value

Type: System.String
HTML markup for a control and exception information.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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