This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.
For a description of this member, see IList.Add.
You cannot use methods in XAML.
Type: System.Int32The position into which the new element was inserted.
This member is an explicit interface member implementation. It can be used only when the ColumnDefinitionCollection instance is cast to an IList interface.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Supported in: 3.5, 3.0
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