Do you mean convert it to C#?
Form frm = new Form();
string formName = "Form1";
formName = string.Format("{0}.{1}", [Assembly].GetEntryAssembly.GetName.Name, formName);
frm = [Assembly].GetEntryAssembly.CreateInstance(formName) as Form;
frm.Show();
Or more succinctly:
string name = string.Format("{0}.Form1", [Assembly].GetEntryAssembly.GetName.Name);
Form frm = [Assembly].GetEntryAssembly.CreateInstance(formName) as Form;
frm.Show();