OpenFileDialog file extension filtering

Question

in filtering = all files selected
I don't want .exe or .pdf file to be uploaded, is it possible?

Answer 1

Hi @Koray Genç , Welcome to Microsoft Q&A, you could try the following code to get what you wanted.

Because DLG. Filter is to filter out the displayed files. So an easy way to do this is to put the suffix you need to display.

OpenFileDialog dlg = new OpenFileDialog();  
  
// Filter by Word Documents OR Excel Worksheets OR PowerPoint Presentations   
//           OR Office Files   
//           OR All Files  
//dlg.Filter = "Word Documents|*.doc|Excel Worksheets|*.xls|PowerPoint Presentations|*.ppt" +  
//  "|Office Files|*.doc;*.xls;*.ppt" +  
//  "|All Files|*.*";  
  
dlg.Filter = "All Files|*.doc;*.xls;*.ppt;*.doc;.xls;*.ppt;*.txt;";  
  
dlg.ShowDialog();  

Update：

OpenFileDialog dlg = new OpenFileDialog();  
dlg.Filter = "All Files|*.*";  
bool Flag = true;  
while (Flag)  
{  
	if (dlg.ShowDialog() == DialogResult.OK)  
	{  
		if (dlg.SafeFileName.Contains(".exe") | dlg.SafeFileName.Contains(".pdf"))  
		{  
			MessageBox.Show("This File Cannot Be Select");  
			dlg.FileName = "";  
		}  
		else  
		{  
			Flag = false;  
		}  
	}  
	else  
	{  
		MessageBox.Show("Select error");  
	}  
}  

Best Regards,
Jiale

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Answer 2

        Dim OFP As New OpenFileDialog  
        Dim fileType As String = ".exe"  
        OFP.FileName = ""  
        OFP.Multiselect = False  
        OFP.Filter = "All Files|*.*||" & fileType  
  
         If (OFP.ShowDialog() = DialogResult.OK) Then  
  
  
  
            Dim ext As String = Path.GetExtension(OFP.FileName)  
            TextBox1.Text = OFP.FileName  
  
            If ext <> fileType Then  
  
            Else  
                MessageBox.Show("This File Cannot Be Selected")  
                TextBox1.Text = ""  
  
            End If  
        End If  
  

I tried a code like this :)

and the result is nice

thank you for your help