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var dir = new System.IO.DirectotyInfo(@"E:\33\2323\test\Demo\");
var dirp = dir.Parent.ToString();
var dir = new System.IO.DirectotyInfo(@"E:\33\2323\test\Demo\");
var dirp = dir.ToString();
string path = @"E:\33\2323\test\Demo\";
path = Regex.Match(path,@".*?(?=[^\\]+?\\$)").Value;
//E:\\33\\2323\\test\\