Enable button on only text file select

Aniruddha Acharya

Hi,

I want to how to enabled button when only select .txt file from browse openFileDialog window .

I am using this code on browse button click .

private void btnBrowse_Click(object sender, RoutedEventArgs e)
{
Microsoft.Win32.OpenFileDialog openFileDialog = new Microsoft.Win32.OpenFileDialog();
openFileDialog.DefaultExt = ".txt";
openFileDialog.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*";
openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
result = openFileDialog.Filter;
if (openFileDialog.ShowDialog() == true) //Open file dialog window
{
txtpath = openFileDialog.FileName;
FileNameTextBox.Text = txtpath;
btnCompaire.IsEnabled = true; openFileDialog.
}
}

Only for select .txt file . if other any file [.ppt,pdf,...etc] then disabled this button

Thanks

4 Replies

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Ramesh Palanivel8y ago
Accepted answer
Hi Anirudha,

try the below code to check the file extension

string ext = Path.GetExtension(OpenFileDialog1.FileName);
if(!ext.equals("txt"))
{
btnCompaire.IsEnabled = false;
}
Aniruddha Acharya8y ago
Hi Ramesh ,

I got it another solution , Thanks

private void btnBrowse_Click(object sender, RoutedEventArgs e)
{
Microsoft.Win32.OpenFileDialog openFileDialog = new Microsoft.Win32.OpenFileDialog();
openFileDialog.DefaultExt = ".txt";
openFileDialog.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*";
openFileDialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
result = openFileDialog.Filter;
if (openFileDialog.ShowDialog() == true) //Open file dialog window
{
txtpath = openFileDialog.FileName;
FileNameTextBox.Text = txtpath;
string ext = System.IO.Path.GetExtension(txtpath);
if (ext.ToUpper() == ".TXT")
{
btnCompaire.IsEnabled = true;
}
}
}
Ramesh Palanivel8y ago
Hi Anirudha,

Please try this code,
private void btnBrowse_Click(object sender, RoutedEventArgs e)
{

OpenFileDialog openFileDialog1 = new OpenFileDialog();



    openFileDialog1.InitialDirectory = @"C:\";

    openFileDialog1.Title = "Browse Text Files";



    openFileDialog1.CheckFileExists = true;

    openFileDialog1.CheckPathExists = true;



    openFileDialog1.DefaultExt = "txt";

    openFileDialog1.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*";

    openFileDialog1.FilterIndex = 2;

    openFileDialog1.RestoreDirectory = true;



    openFileDialog1.ReadOnlyChecked = true;

    openFileDialog1.ShowReadOnly = true;



    if (openFileDialog1.ShowDialog() == DialogResult.OK)

    {

btnCompaire.IsEnabled=true;

        string ext=Path.GetExtension(openFileDialog1.FileName);

if(!exe.equals("txt"))

{

btnCompaire.IsEnabled=false;

}

    }

}
Aniruddha Acharya8y ago
Hi Ramesh ,
It's working but my issue is only select .txt file then enable butoon . not required , enable button on select .pdf , .csv ,....etc file.
Only select .txt file then enable button .
Example : select abc.txt from openFileDialog window then enable button.

Thanks.