Getting Arguments from a Running Process

File1.cs

var processes = Process.GetProcessesByName( "MyProcess" );

File2.cs

var managementObjectSearcher = new ManagementObjectSearcher( "select CommandLine from Win32_Process where Name='MyProcess.exe'" );
var managementObjects = managementObjectSearcher.Get();
foreach( var managementObject in managementObjects )
{
    var command = (string)managementObject["CommandLine"];
}