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LoginDesigner.GetErrorDesignTimeHtml Method

Provides the markup that is used to render the associated control at design time when an error has occurred.

Namespace:  System.Web.UI.Design.WebControls
Assembly:  System.Design (in System.Design.dll)
protected override string GetErrorDesignTimeHtml(
	Exception e
)

Parameters

e
Type: System.Exception

The Exception that was thrown.

Return Value

Type: System.String
A string that contains the markup used to render the associated Login at design time after an error has occurred.

The placeholder that the design-time Login control renders contains the type name, the control name, and messages announcing and describing the error.

The following code example shows how to override the GetErrorDesignTimeHtml method in a class that is inherited from the LoginDesigner class to change the appearance of a control that is derived from the Login control at design time. The example generates the markup for a placeholder that includes the error message rendered in red, bold text.

// 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

.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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