How cam run a .exe file(compiled from .cs file) in cmd windows?

Question

if i have a file .exe  (compiled from .cs file with 2 function inside fun1(string str1,string str2),fun2(int a,string str)).How can i run that file from a cmd windows? with the name of function and parametters are provided .

example:

fun1(string str1,string str2)

{

      //something

}

fun2(int a,string str)

{

   //something

}