Question

即使比較驗證程序較大且即使較少，它也始終會進行觸發。

<tr> 
    <td> 
     Selection Start Date: 
    </td> 
    <td> 
     <asp:TextBox ID="SelectionStartDateTextBox" runat="server" 
        Text='<%# Bind("SelectionStartDate") %>'></asp:TextBox> 
     <asp:RequiredFieldValidator runat="server" ID="RequFilesStart" 
        ControlToValidate="SelectionStartDateTextBox" 
      ErrorMessage="Enter Selection Start date!" ValidationGroup="validation1"> 
     </asp:RequiredFieldValidator> 
    </td> 
</tr> 
<tr> 
    <td> 
     Selection End Date: 
    </td> 
    <td> 
     <asp:TextBox ID="SelectionEndDateTextBox" runat="server" 
        Text='<%# Bind("SelectionEndDate") %>'></asp:TextBox> 
     <asp:RequiredFieldValidator runat="server" ID="ReqFiledEnd" 
        ControlToValidate="SelectionEndDateTextBox" 
      ErrorMessage="Enter Selection End date!" ValidationGroup="validation1"> 
     </asp:RequiredFieldValidator> 
     <asp:CompareValidator ID="CompareValSelDate" runat="server" 
      ControlToValidate="SelectionEndDateTextBox" 
      ControlToCompare="SelectionStartDateTextBox" 
      CultureInvariantValues="true" Type="Date" 
      Operator="LessThanEqual" ValidationGroup="validation1" 
      ErrorMessage="Selection End Date should be greater then Selected start date" 
      Display="dynamic">   

     </asp:CompareValidator> 
    </td> 
</tr> 

我還設置它文化=「EN-GB」並且也設置它同我的web配置。 我使用Ajax工具包，以顯示附加到文本框日曆

<cc1:calendarextender id="Calendarextendera3" runat="server" format="dd MMM yyyy" 
      targetcontrolid="SelectionEndDateTextBox"> 
</cc1:calendarextender> 

<cc1:calendarextender id="Calendarextendera4" runat="server" format="dd MMM yyyy" 
      targetcontrolid="SelectionStartDateTextBox"> 
</cc1:calendarextender> 

請幫助我不知道該怎麼辦。

在此先感謝

Answer 1

您應該設置

CultureInvariantValues="false" 

在CompareValidator

。而且，日期格式應該是您當前文化的日期格式。 CompareValidator似乎無法比較格式dd MMM yyyy。如果你想顯示這種格式，你可以使用自定義驗證器來比較日期：

<asp:CustomValidator runat="server" ID="datesValidator" OnServerValidate="DatesValidator_Validate" ErrorMessage="end date should be greater than or equal to start date"></asp:CustomValidator> 

protected void DatesValidator_Validate(object source, ServerValidateEventArgs args) 
{ 
    DateTime startDate = Convert.ToDateTime(SelectionStartDateTextBox.Text); 
    DateTime endDate = Convert.ToDateTime(SelectionEndDateTextBox.Text); 

    if (endDate < startDate) 
    { 
     args.IsValid = false; 
    } 
}