验证控件的使用二（RequiredFieldValidator ）

<script runat="server">
    protected void Button1_Click(Object sender, EventArgs e) {
      if (Page.IsValid) {
       Label1.Text = "Page is valid!";
      }
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server" id="Head1">
    <title>RequiredFieldValidator</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:TextBox ID="TextBox1" Runat="server"></asp:TextBox>
        <asp:RequiredFieldValidator ID="RequiredFieldValidator1"    Runat="server" Text="Required!" ControlToValidate="TextBox1">
        </asp:RequiredFieldValidator>
        <br />
        <asp:Button ID="Button1" Runat="server" Text="Submit"   OnClick="Button1_Click" />
        <br />
        <br />
        <asp:Label ID="Label1" Runat="server"></asp:Label>    
    </div>
    </form>
</body>
</html>

InitialValue 表示默认值文本框

 1 <script runat="server">
 2     protected void Button1_Click(Object sender, EventArgs e) {
 3       if (Page.IsValid) {
 4        Label1.Text = "Page is valid!";
 5       }
 6     }
 7  </script>
 8 
 9 <html xmlns="http://www.w3.org/1999/xhtml" >
10 <head runat="server" id="Head1">
11     <title>RequiredFieldValidator</title>
12 </head>
13 <body>
14     <form id="form1" runat="server">
15     <div>
16 <asp:TextBox ID="TextBox1" Runat="server">My Initial Value</asp:TextBox>&nbsp; 
17 
18 <asp:RequiredFieldValidator ID="RequiredFieldValidator1" Runat="server"  
19  Text="Please change value" ControlToValidate="TextBox1" 
20  InitialValue="My Initial Value"></asp:RequiredFieldValidator>
21 
22 <asp:RequiredFieldValidator ID="RequiredFieldValidator2" Runat="server" 
23  Text="Do not leave empty" ControlToValidate="TextBox1"> 
24 </asp:RequiredFieldValidator>
25 
26         <br />
27         <asp:Button ID="Button1" Runat="server" Text="Submit"   OnClick="Button1_Click" />
28         <br />
29         <br />
30         <asp:Label ID="Label1" Runat="server"></asp:Label>    
31     </div>
32     </form>
33 </body>

posted on 2011-06-14 06:44 .net 流氓阅读(2094) 评论(0) 编辑收藏举报