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OpenFileDialog show error without closing the dialog

Question

Hi,

I am using below code to select a photo and I want to allow selcting photoz upto 1 MB only.

In the below code, when the user clicks OK it will close the dialog and then display the error message but how can I show the message without closing the box so use can select another photo?

OpenFileDialog dialogPicture = new OpenFileDialog();
dialogPicture.Title = "Employee Photo";

if (dialogPicture.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
    var file_size = new FileInfo(dialogPicture.FileName).Length;

    if (file_size > 1048576)
    {
        XtraMessageBox.Show("File is larger than 1MB!", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
        return;
    }

}

Thanks,

Jassim

Wednesday, December 16, 2015 2:20 PM

Answers

You can use FileOK event

https://msdn.microsoft.com/en-us/library/system.windows.forms.filedialog.fileok(v=vs.110).aspx

private void Form1_Load(object sender, EventArgs e)
{
	OpenFileDialog dialog = new OpenFileDialog();
	dialog.FileOk += dialog_FileOK;

	if (dialog.ShowDialog == Windows.Forms.DialogResult.OK) {
	}
}

private void dialog_FileOK(object sender, CancelEventArgs e)
{
	OpenFileDialog dialog = sender;
	var file_size = new FileInfo(dialog.FileName).Length;

        if (file_size > 1048576)
      {
          XtraMessageBox.Show("File is larger than 1MB!", "Error!", MessageBoxButtons.OK, MessageBoxIcon.Error);
          e.Cancel = true;
     }
}

Gaurav Khanna | Microsoft .NET MVP | Microsoft Community Contributor

Edited by Khanna Gaurav Wednesday, December 16, 2015 4:29 PM
Proposed as answer by Blackwood Wednesday, December 16, 2015 4:31 PM
Marked as answer by Jassim Rahma Wednesday, December 16, 2015 9:34 PM

Wednesday, December 16, 2015 4:26 PM

Answered by:

OpenFileDialog show error without closing the dialog

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