Gets or sets the expression.
Assembly: System.Activities.Presentation (in System.Activities.Presentation.dll)
is always required. When using the [ExpressionTextBox] declaratively to bind to arguments, you must always use the ArgumentToExpressionConverter to bind the expression to the argument, setting the ConverterParameter to In or Out depending on the direction of the argument.
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
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.