ValidatorCallout

ValidatorCallout是一个用来绑定验证控件的提醒控件，替换“错误信息”为“弹出模式对话框”。其主要是作为ASP.NET2.0中验证控件的扩展。

属性列表：

targetcontrolid:要实现提示功能的验证控件ID
width:弹出提示信息的宽度
highlinghtcssclass：弹出信息应用的样式
warningiconimageurl：弹出信息中的警告图片地址
closeimageurl：弹出信息中使用的关闭图片地址

实例解析一、默认功能实现（使用默认的样式和关闭按钮图片）

    <form id="form1" runat="server">
    <div><asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager></div>
        <table style="width: 549px; height: 91px">
            <tr>
                <td style="width: 5px">name:</td>
                <td style="width: 100px">
                    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                    <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1"
                        Display="None" ErrorMessage="name不能为空"></asp:RequiredFieldValidator>
                    <cc1:validatorcalloutextender id="ValidatorCalloutExtender1" runat="server" targetcontrolid="RequiredFieldValidator1"></cc1:validatorcalloutextender>
                </td>
            </tr>
            <tr>
                <td style="width: 5px">password:</td>
                <td style="width: 100px"><asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                    <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="TextBox2"
                        Display="None" ErrorMessage="pwd不能为空"></asp:RequiredFieldValidator>
                    <cc1:validatorcalloutextender id="ValidatorCalloutExtender2" runat="server" targetcontrolid="RequiredFieldValidator2"></cc1:validatorcalloutextender>
                </td>
            </tr>
        </table>
        <asp:Button ID="Button1" runat="server" Text="Button" />
    </form>