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.