How to get file extension from OpenFileDialog?

Question

I want just get Image(.JPG,.PNG,.Gif) File from my OpenFileDialog How can I get file extension from OpenFileDialog?

Is it impossible?

Yes, the Filter property allow you to preselect the file types required, look at my updated answer below — Steve, Mar 26 '12 at 12:17
Curious, I'm sure you have asked about the Filter property, but you have accepted another answer. — Steve, Mar 27 '12 at 18:12
@Steve you are right. I have a mistake.I change my accepted answer — M.Azad, Mar 28 '12 at 06:54

Steve · Accepted Answer · 2014-06-09T11:27:21.327

56

To filter only certain types of file use Filter Property

OpenFileDialog1.Filter = "Image Files (JPG,PNG,GIF)|*.JPG;*.PNG;*.GIF";

To get the file extension use the Path helper GetFileExtension

if (OpenFileDialog1.ShowDialog() == DialogResult.OK)
   string ext = Path.GetExtension(OpenFileDialog1.FileName);

edited Jun 09 '14 at 11:27

answered Mar 26 '12 at 12:10

Steve

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vertical bar shouldn't be on the last character of the string. – Moses Aprico Jun 09 '14 at 11:09
2

@MosesAprico You are correct, strange how this has not been noticed for all this time – Steve Jun 09 '14 at 11:27

score 11 · Answer 2 · answered Mar 26 '12 at 12:10

11

What about

Path.GetExtension(ofd.FileName);

answered Mar 26 '12 at 12:10

Aliostad

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Note: the Path class is in System.IO – BentChainRing Oct 31 '17 at 23:01

score 4 · Answer 3 · answered Mar 26 '12 at 12:10

4

Use this:

Path.GetExtension(dialog.FileName);

answered Mar 26 '12 at 12:10

ionden

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score 1 · Answer 4 · answered Jul 19 '17 at 19:35

Also could use Extension Method as blow:

public static class Helper
    {
        public static string GetFileExtention(this OpenFileDialog dialog)
        {
            return Path.GetExtension(dialog.FileName);
        }
    }

And simply use it by:

 openFileDialog1.ShowDialog();
 string foo = openFileDialog1.GetFileExtention();

score 0 · Answer 5 · answered Mar 26 '12 at 12:10

0

As stated in here, you can do something like this: Path.GetExtension(photoFile.FileName)

answered Mar 26 '12 at 12:10

npinti

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score -2 · Answer 6 · answered Sep 26 '13 at 10:51

-2

Try this

fileDialog.File.Extension

answered Sep 26 '13 at 10:51

Manu

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`OpenFileDialog1` douse not have `File` property! – Ali Jul 19 '17 at 19:11

How to get file extension from OpenFileDialog?

6 Answers6