I have some string with variable, e.g.
string path = @\"C:\\one\\filename.exe\" + arguments arguments: \"-s -c -d > \"somedirectory\\some file.txt\"\" >
string args = @"-s -c -d > ""somedirectory\some file.txt"""
try that.
for more information, http://msdn.microsoft.com/en-us/library/aa691090%28v=vs.71%29.aspx