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HiddenFieldDesigner.GetDesignTimeHtml Method ()

Note: This method is new in the .NET Framework version 2.0.

Gets the markup that is used to render the associated control at design time.

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

public override string GetDesignTimeHtml ()
public String GetDesignTimeHtml ()
public override function GetDesignTimeHtml () : String

Return Value

A string containing the markup used to render the HiddenField at design time.

The GetDesignTimeHtml method generates the markup for a placeholder that includes the control class name and the ID property.

The following code example shows how to override the GetDesignTimeHtml method in a class that is inherited from the HiddenFieldDesigner class to change the appearance of the HiddenField control at design time. The GetDesignTimeHtml override generates a placeholder that includes the Value property in the placeholder, along with the control class name and the ID property.

// Generate the design-time markup.
public override string GetDesignTimeHtml()
    // Get a reference to the control or a copy of the control.
    MyHiddenField myHF = (MyHiddenField)ViewControl;

    // Create a placeholder that displays the control value.
    string markup = CreatePlaceHolderDesignTimeHtml(
         "Value: \"" + myHF.Value.ToString() + "\"" );

    return markup;

} // GetDesignTimeHtml

  • 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