How to pass multiple arguments to a newly created process in C# .net?

In order to pass multiple command line arguments you should separate each with a space and surround it in quotes in case the argument itself contains a space.

string[] args = { "first", "second", "\"third arg\"" };
Process.Start("blah.exe", String.Join(" ", args));

Process.Start( "program.exe", "arg1 arg2 arg3" );