Designer: Control Toolbox

The Designer supports native .NET 4.5 controls and containers, third party .NET 4.5 controls, and has many of its own .NET controls available. The Designer does not support Silverlight controls or 2D shapes or drawing capabilities.

Note: Beginning with Workflow 2.5, .NET 4.5 is required to develop display or form assemblies. Custom display or form assemblies that target earlier versions of .NET will continue to function as before. However, saving changes made to such custom assemblies requires that they be upgraded, which is accomplished in different ways, based on the version of .NET:
  • For an assembly that pre-dates .NET 4.0, you must upgrade the assembly when you open it. Failure to do so results in an error and the inability to save the edited assembly.
  • For an assembly that targets .NET 4.0, the assembly is upgraded automatically when opened, and changes to such assemblies can be saved as before.