Asp RequiredFieldValidator，CompareValidator简单使用

<asp:Label ID="Label1" runat="server" Text="姓名：">asp:Label>

        <asp:TextBox ID="TextBox1" runat="server" Height="20px" Width="145px">asp:TextBox>
        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
            ErrorMessage="RequiredFieldValidator" ForeColor="Red" Text="用户名不能为空" ControlToValidate="TextBox1">asp:RequiredFieldValidator>
        <br /><br />
        <asp:Label ID="Label2" runat="server" Text="密码：">asp:Label>
        <asp:TextBox ID="TextBox2" runat="server">asp:TextBox>
        <br /><br />
        <asp:Label ID="Label3" runat="server" Text="确认密码：">asp:Label>
        <asp:TextBox ID="TextBox3" runat="server">asp:TextBox>
        <asp:CompareValidator ID="CompareValidator1" runat="server" 
            ErrorMessage="CompareValidator" ForeColor="Red" Text="两次密码不一致" ControlToCompare="TextBox2" ControlToValidate="TextBox3">asp:CompareValidator>
        <br /><br />