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Simple file dialog

String[] showFileDialog()
{
    OpenFileDialog dialog = new OpenFileDialog();
 
    dialog.InitialDirectory = ".";
    // Preselect .txt files
    dialog.Filter = "Txt-Dateien|*.txt";
    dialog.FilterIndex = 1;
    dialog.Multiselect = false;
    dialog.RestoreDirectory = true;
 
    if (dialog.ShowDialog() == DialogResult.OK)
    {
        return dialog.FileNames[0];
    }
}

Shows a simple dialog to pick a file from the local filesystem. In this snippet, only .txt files are preselected.

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