ServerValidate 事件

當自訂驗證器驗證 ControlToValidate 屬性的值時發生。

public event System.Web.UI.WebControls.ServerValidateEventHandler ServerValidate

備註

如果使用此事件登錄方法，則會使用 ControlToValidate 屬性值呼叫該方法。只有此事件處理常式傳回 true 時，驗證才成功完成。

範例

下列範例示範如何截獲 ServerValidate 事件以加入驗證頁面的邏輯。

[Visual Basic]

Protected Sub Submit_OnClick(sender As Object, e As EventArgs)
   ' Validator checking. If things go wrong, return.
   ' The validator's error message will be displayed on
   ' the same panel.
   If Page.IsValid Then
      ActiveForm = Form2
   End If
End Sub

Public Sub ServerValidate(source As Object, args As ServerValidateEventArgs)
   Dim num As Integer = Int32.Parse(args.Value)
   
   If num Mod 2 = 0 Then
      cust.Text = "Valid number"
      args.IsValid = True
   Else
      cust.Text = "InValid number"
      args.IsValid = False
   End If
End Sub


Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load

   cust.Alignment = System.Web.UI.MobileControls.Alignment.Center
   cust.Wrapping = System.Web.UI.MobileControls.Wrapping.NoWrap
   cust.ForeColor = System.Drawing.Color.Blue
   cust.StyleReference = "Title"
   cust.Display = System.Web.UI.WebControls.ValidatorDisplay.Static

End Sub

<mobile:Form id="Form1" runat=server>
  <mobile:Label id="message1" runat=server>
    Please enter an Even number
  </mobile:Label>
  <mobile:TextBox id="number" runat=server MaxLength=9 />
  <mobile:CustomValidator ID="cust" ControlToValidate="number"
            OnServerValidate="ServerValidate"
            runat=server >
    Invalid number
  </mobile:CustomValidator>
  <mobile:Command id="Command1" runat=server OnClick="Submit_OnClick">
    Submit
  </mobile:Command>
</mobile:Form>
<mobile:Form id="Form2" runat=server>
  <mobile:Label id="Label2" runat=server>number is submitted</mobile:Label>
</mobile:Form>

<script language="c#" runat=server>
protected void Submit_OnClick(Object sender, EventArgs e)
{
  // Validator checking. If things go wrong, return.
  // The validator's error message will be displayed on
  // the same panel.
  if (Page.IsValid)
  {
    ActiveForm = Form2;
  }
}
public void ServerValidate (object source, ServerValidateEventArgs args)
{
  int num = Int32.Parse(args.Value);

  if (num % 2 == 0)
   {
       cust.Text    = "Valid number";
       args.IsValid = true;   
   }
  else
   {
       cust.Text    = "InValid number";
       args.IsValid = false;
   }
}
public void Page_Load(Object sender, EventArgs e)
{
   cust.Alignment      = System.Web.UI.MobileControls.Alignment.Center;
   cust.Wrapping       = System.Web.UI.MobileControls.Wrapping.NoWrap;
   cust.ForeColor      = System.Drawing.Color.Blue; 
   cust.StyleReference = "Title";
   cust.Display        = System.Web.UI.WebControls.ValidatorDisplay.Static;
}
</script>
<mobile:Form id="Form1" runat=server>
  <mobile:Label id="message1" runat=server>
    Please enter an Even number
  </mobile:Label>
  <mobile:TextBox id="number" runat=server MaxLength=9 />
  <mobile:CustomValidator ID="cust" ControlToValidate="number"
            OnServerValidate="ServerValidate"
            runat=server >
    Invalid number
  </mobile:CustomValidator>
  <mobile:Command id="Command1" runat=server OnClick="Submit_OnClick">
    Submit
  </mobile:Command>
</mobile:Form>
<mobile:Form id="Form2" runat=server>
  <mobile:Label id="Label2" runat=server>number is submitted</mobile:Label>
</mobile:Form>

請參閱

CustomValidator 類別