Where to get DLL for Microsoft.Expression.Encoder.Devices
问题 I'm trying to run this WebCam project which written in C#, WPF Application. The project I'm trying to run is on CodeProject website. LINK They didn't provide me with Microsoft.Expression.Encoder.Devices DLL. I searched it online, I cannot find it. using Microsoft.Expression.Encoder.Devices; ERROR: The Type or NameSpace name 'Expression' does not exist in the namespace 'Microsoft'(are you missing an assembly reference?) 回答1: As per Microsoft's documentation, you'll need Expression Studio.