Gets the length of the current composition in Unicode symbols.
Assembly: PresentationFramework (in PresentationFramework.dll)
The property indicates how many characters have been entered since the last TextInput event. This property is only meaningful when the TextInputStart or TextInputUpdate event occurs. When the TextInput event occurs, is –1, and the ResultLength property indicates the length of the composition.
is introduced in the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.