path process question

I have a file name called a.b.c.d if I use Path.Ge开发者_如何转开发tFileNameWithoutExtension, I get a.b.c, I am wondering how to get a part only

Here's one way:

var path = "asdf.bsdf.csdf";

while(Path.HasExtension(path))
    path = Path.GetFileNameWithoutExtension(path);

Here's another:

path = "asdf.bsdf.csdf";
path = path.Substring(0, path.IndexOf('.'));

Note that the latter would require a little modification if path were actually a path and not just a file name, whereas the first would not.

There are lots of other ways to do this -- these are just two examples.

Option 1:

string p = Path.GFNWE (Path.GFNWE (Path.GFNWE (original)));

Option 2:

 string p = original;
 int i;
 while ((i = p.LastIndexOf ('.')) > 0) {
      p = Path.GetFileNameWithoutExtension (p);
 }

Option 3: (careful, case-sensitive)

 if (original.EndsWith (".b.c.d"))
      original = original.Substring (0, original.Length - ".b.c.d".Length);

Well you could try something like

Path.GetFileName("a.b.c.d").Split('.')[0]

string fileName = "a.b.c.d";
string whatYouWant = fileName.Substring(0, fileName.IndexOf('.'));