Remove file extension from each item in the array c#

Question

I have an array with items having names with .txt. I want to remove the extension. The following code is not working.

var xx = filenames.ForEach(x =>
{
    int fileExtPos = x.LastIndexOf(".");
    if (fileExtPos >= 0)
        x = x.Substring(0, fileExtPos);
});

Can anyone help what am i doing wrong here?

Thanks

`"The following code is not working."` -- Why is it not working? Is there an error? Are the results wrong? Also, in the future dont use the `.ForEach()` extension method. Use a `foreach` loop — maccettura, Sep 27 '18 at 13:23
It would be awesome if you could provide a [mcve]. For example, I am surprised if the above code compiles if `filenames` is an array. Also, do you want the filenames (without extension) to be **written back** to the array? Or do you want to project that to a new list / array? Or something else? — mjwills, Sep 27 '18 at 13:26
`var names = filenames.Select(Path.GetFileNameWithoutExtension);` — TVOHM, Sep 27 '18 at 13:27

fubo · Answer 1 · 2018-09-27T13:31:03.380

6

There is a build in method GetFileNameWithoutExtension() which could be used. That's the common way to handle this.

var result = filenames.Select(System.IO.Path.GetFileNameWithoutExtension);

You error appears here var xx = filenames.ForEach because ForEach has no return value (void) which could be assigned to var xx.

edited Sep 27 '18 at 13:31

answered Sep 27 '18 at 13:23

fubo

1 Answers1