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ControlDesigner.CreatePlaceHolderDesignTimeHtml Method

Provides a simple rectangular placeholder representation that displays the type and ID of the control.

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

protected string CreatePlaceHolderDesignTimeHtml()

Return Value

Type: System.String
A string that contains design-time HTML markup providing basic information about the control.

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.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

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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