I have my form, fMP3mainFrm, which has a Windows Media Player control called WMP. From my other .cs file Program.cs (which is going to contain most of my program code, the fMP3mainFrm.cs file is for form specific code) I want to be able to access controls on the fMP3mainFrm form and use them pretty much like if I were doing the coding in the fMP3mainFrm.cs file itself. Only problem is that I can't figure this out. In VB, I could just do fMP3mainFrm.WMP.URL or fMP3mainFrm.TextBox1.Text, etc etc. How is this done in C#?