Searches for the specified MatrixKeyFrame and returns the zero-based index of the first occurrence within the entire collection.
Assembly: PresentationCore (in PresentationCore.dll)
Return ValueType: System.Int32
The zero-based index of the first occurrence of keyFrame within the entire collection, if found; otherwise, -1.
The collection is searched forward starting at the first key frame and ending at the last key frame.
This method determines equality by calling Object.Equals.
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.