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在我的 aspx 页面中:

<table cellpadding="2" cellspacing="2" align="center">
<tr>
  <asp:ValidationSummary ID="Alert" runat="server" CssClass="failureNotification" HeaderText=""/>                                  
</tr>

 <tr>
   <FTB:FreeTextBox id="FTB" runat="server"/>
  <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="FTB" CssClass="failureNotification" ErrorMessage="Content cannot be empty." ToolTip="Content cannot be empty." ></asp:RequiredFieldValidator> 
  <asp:RegularExpressionValidator ID="rev" runat="server" ControlToValidate="FTB" ErrorMessage="Text with only spaces is not allowed." ToolTip="Text with only spaces is not allowed "  ValidationExpression="[^\s]+" CssClass="failureNotification"/>                      
 </tr>
</table>

我将 1RequiredFieldValidator和 1RegularExpressionValidator用于 FreeTextBox FTB

当我让 FreeTextBox 为空时,RequiredFieldValidator在 2 个位置显示错误消息:在此处输入图像描述

RegularExpressionValidator这与我在 FreeTextbox 中仅按空格时的错误消息相同。

Note:2个职位RequiredFieldValidator和2个职位RegularExpressionValidator也。不是两个位置。

帮助!!!我只希望错误消息显示在 1 个位置:在表格顶部!!!

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