esri - How to open and use a downloaded arcgis toolbox at C#

Question

Im trying to open a toolbox from C# that doesnt exist at the esri refrences tools, I downloaded it and i can use it from ArcMap if I open it from there,

Is there a way to open and use that toolbox from C#, P.S The toolbox contains 3 tools

Answer 1

等待大神答复