Unrecognized escape sequence for path string containing backslashes

string foo = "D:\Projects\Some\Kind\Of\Pathproblem\wuhoo.xml";

You can either use a double backslash each time

string foo = "D:\\Projects\\Some\\Kind\\Of\\Pathproblem\\wuhoo.xml";

or use the @ symbol

string foo = @"D:\Projects\Some\Kind\Of\Pathproblem\wuhoo.xml";