C# (CSharp) Homework8 OrderService.SelectByNumber Beispiele

Beispiel #1

 private void selectButton_Click(object sender, EventArgs e)
 {
     if (orderService.SelectByNumber(Int32.Parse(selectText.Text)) != null)
     {
         richTextBox1.Text = orderService.SelectByNumber(Int32.Parse(selectText.Text)).ToString();
     }
     else
     {
         richTextBox1.Text = "无此订单";
     }
 }