SPUtility.IsDesignTimeRender method

Indicates whether the current request is run in a design-time context. Usually this is because a Web service call is made by a Microsoft SharePoint Foundation-compatible editor, for example Microsoft SharePoint Designer 2010.

Namespace:  Microsoft.SharePoint.Utilities
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

public static bool IsDesignTimeRender()

Return value

Type: System.Boolean
true if the request is run in a design-time context; otherwise, false.