GitUI.FormSettings.SelectFile C# (CSharp) Метод

        private string SelectFile(string initialDirectory, string filter, string prev)
        {
            OpenFileDialog dialog = new OpenFileDialog();
            dialog.Filter = filter;
            dialog.InitialDirectory = initialDirectory;
            dialog.Title = "Select file";
            return (dialog.ShowDialog() == DialogResult.OK) ? dialog.FileName : prev;
        }