asp.net - 为什么我的 ASP.NET CustomValidator 无法验证？

Question

我一定做错了什么。我似乎无法执行 CustomValidator 的 ServerValidate 方法。

我有一个带有 CustomValidator 的 Visual Basic ASP.NET 页面...

<asp:TextBox ID="TextBox1" runat="server" />
<asp:CustomValidator ID="CustomValidator1" runat="server"
    ControlToValidate="TextBox1"
    ErrorMessage="Friendly message goes here."
    Display="Dynamic" />
<asp:Button ID="Button1" runat="server"
    Text="Submit"
    CausesValidation="True" />

对于此测试，我将验证设置为始终失败...

Sub CustomValidator1_ServerValidate(ByVal source As Object, ByVal args As System.Web.UI.WebControls.ServerValidateEventArgs) Handles CustomValidator1.ServerValidate    args.IsValid = FalseEnd Sub

但是，单击按钮时，CustomValidator1_ServerValidate() 方法永远不会执行!

Protected Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click    Page.Validate()    If Page.IsValid Then        'it executes the code here!    End IfEnd Sub

即使我明确验证该控件也不会...

CustomValidator1.Validate() 'does nothing?

我做错了什么？

Answer 1

添加属性:

 ValidateEmptyText="True"