SaveFileDialog in C#

Hiển thị hộp thoại Save File dùng code C#

using (SaveFileDialog dialog = new SaveFileDialog())          
{               
    dialog.Title = "Save Anomaly Report Excel file";              
    dialog.Filter = "Excel files|*.xlsx";                
    if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)     
    {                    
      //My process              
    } 
}