MenuDesigner.GetEmptyDesignTimeHtml Method

Gets the markup that renders a placeholder for the associated control at design time when no markup is otherwise available.

Namespace: System.Web.UI.Design.WebControls
Assembly: System.Design (in

protected override string GetEmptyDesignTimeHtml ()
protected String GetEmptyDesignTimeHtml ()
protected override function GetEmptyDesignTimeHtml () : String
Not applicable.

Return Value

A string containing markup text that renders to a placeholder on the design surface.

The GetEmptyDesignTimeHtml method generates the markup for a placeholder that specifies the Menu control name and a message instructing you to use the collection editor to add items.

The following code example shows how to override the GetEmptyDesignTimeHtml method in a class that is inherited from the MenuDesigner class. The overridden method changes the appearance of a control that is derived from the Menu class at design time. The example generates the markup for a placeholder that includes a message indicating that no menu items are defined for the associated control.

// Generate the design-time markup for the control 
// when the template is empty.
protected override string GetEmptyDesignTimeHtml()
    string noElements = "Contains no menu items.";

    return CreatePlaceHolderDesignTimeHtml(noElements);
} // GetEmptyDesignTimeHtml

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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