验证控件的使用七（ValidationSummary）

weixin_34368949

于 2019-01-08 01:33:10 发布

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本文探讨了在ASP.NET中使用RequiredFieldValidator进行表单验证的方法，包括如何避免重复显示错误信息，确保用户输入完整姓名。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

1 First name
2 <asp:TextBox ID="TextBox1" Runat="server"></asp:TextBox>
3  
4 <asp:RequiredFieldValidator ID="RequiredFieldValidator1"
5 Runat="server" ErrorMessage="You must enter your first name"
6 ControlToValidate="TextBox1"></asp:RequiredFieldValidator>
7 
8 Last name
9 <asp:TextBox ID="TextBox2" Runat="server"></asp:TextBox>
10  
11 <asp:RequiredFieldValidator ID="RequiredFieldValidator2"
12 Runat="server" ErrorMessage="You must enter your last name"
13 ControlToValidate="TextBox2"></asp:RequiredFieldValidator>
14 
15 
16 <asp:Button ID="Button1" OnClick="Button1_Click" Runat="server"
17 Text="Submit"></asp:Button>
18 
19 
20 <asp:ValidationSummary ID="ValidationSummary1" Runat="server"
21 HeaderText="You received the following errors:">
22 </asp:ValidationSummary>
23 
24 
25 <asp:Label ID="Label1" Runat="server"></asp:Label>
26

1 <asp:RequiredFieldValidator ID="RequiredFieldValidator1"
2 Runat="server" ErrorMessage="You must enter your first name" Text="*"
3 ControlToValidate="TextBox1"></asp:RequiredFieldValidator>
4
5 or
6
7 <asp:RequiredFieldValidator ID="RequiredFieldValidator1"
8 Runat="server" ErrorMessage="You must enter your first name"
9 ControlToValidate="TextBox1">*</asp:RequiredFieldValidator>

这样就不会有重复显示