ASP.NET 自定义验证器错误消息 : Control referenced by the property cannot be validated

Question

我使用 ASP.NET 并有一个 Button 和一个 CustomValidator，它必须进行验证按钮。

<asp:Button ID="saveButton" runat="server" OnClick="SaveButton_Click" Text="Speichern"
    CausesValidation="true"/>
<asp:CustomValidator runat="server" ID="saveCValidator" Display="Static"
    OnServerValidate="EditPriceCValidator_ServerValidate"   
    ControlToValidate="saveButton" ErrorMessage="">

加载页面时，我收到错误消息:

"Control 'saveButton' referenced by the ControlToValidate property of 'saveCValidator' cannot be validated."

可能是什么问题？我在网上搜索过，但这没有多大帮助。

Answer 1

AFAIK，ControlToValidate 属性应指向输入控件，或为 CustomValidator 控件留空。

来自MSDN的引用:

Use the ControlToValidate property to specify the input control to validate. This property must be set to the ID of an input control for all validation controls except the CustomValidator control, which can be left blank. If you do not specify a valid input control, an exception will be thrown when the page is rendered. The ID must refer to a control within the same container as the validation control. It must be in the same page or user control, or it must be in the same template of a templated control.

The standard controls that can be validated are:

• System.Web.UI.WebControls.DropDownList
• System.Web.UI.WebControls.FileUpload
• System.Web.UI.WebControls.ListBox
• System.Web.UI.WebControls.RadioButtonList
• System.Web.UI.WebControls.TextBox
• System.Web.UI.HtmlControls.HtmlInputFile
• System.Web.UI.HtmlControls.HtmlInputPassword
• System.Web.UI.HtmlControls.HtmlInputText
• System.Web.UI.HtmlControls.HtmlSelect
• System.Web.UI.HtmlControls.HtmlTextArea