4．在页面上需要验证的地方添加PropertyProxyValidator控件，基本的属性设置如下：

<cc1:propertyproxyvalidator id="firstNameValidator" runat="server"

    ControlToValidate="ContolToValidate"

    PropertyName="PropertyName"

    RulesetName="RuleSetName"

    SourceTypeName="ValidationAspNetQuickStart.Customer">

</cc1:propertyproxyvalidator>

    其中ControlToValidate指定对应的需要验证的控件ID，PropertyName指定在实体类中的属性名，RulesetName指定验证规则的名称，SourceTypeName指定实体类型名，当然了你也可以像验证控件一样通过Display属性来指定验证信息的显示方式：None、Static、Dynamic。PropertyProxyValidator还有一个很重要的事件OnValueConvert，在事件可以通过做类型转换根据是否抛出异常来判断输入是否正确，以及设置验证提示信息等。添加完PropertyProxyValidator后代码如下：

div>
    <h1>
        Validation Application Block: ASP.NET Integration QuickStart</h1>

        <table>
            <tr>
                <td style="width: 100px">
                    First Name:</td>
                <td style="width: 508px">
                    <asp:TextBox ID="firstNameTextBox" runat="server" Width="235px"></asp:TextBox>&nbsp;
                    <br />
                <cc1:propertyproxyvalidator id="firstNameValidator" runat="server"
                    ControlToValidate="firstN
                    ameTextBox"
                    PropertyName="FirstName"
                    RulesetName="RuleSetA"
                    SourceTypeName="ValidationAspNetQuickStart.Customer">
                </cc1:propertyproxyvalidator>
                </td>
            </tr>
            <tr>
                <td style="width: 100px; height: 21px">
                    Last Name:</td>
                <td style="width: 508px; height: 21px">
                    <asp:TextBox ID="lastNameTextBox" runat="server" Width="235px"></asp:TextBox><br />
                    <cc1:PropertyProxyValidator ID="lastNameValidator" runat="server" ControlToValidate="lastNameTextBox"
                        PropertyName="LastName" RulesetName="RuleSetA" SourceTypeName="ValidationAspNetQuickStart.Customer"></cc1:PropertyProxyValidator></td>
            </tr>
            <tr>
                <td style="width: 100px">
                    Date Of Birth:</td>
                <td style="width: 508px">
                    <asp:TextBox ID="dateOfBirthTextBox" runat="server"></asp:TextBox><br />
                    <cc1:PropertyProxyValidator ID="dateOfBirthValidator" runat="server" ControlToValidate="dateOfBirthTextBox"
                        OnValueConvert="dateOfBirthValidator_ValueConvert" PropertyName="DateOfBirth"
                        RulesetName="RuleSetA" SourceTypeName="ValidationAspNetQuickStart.Customer"></cc1:PropertyProxyValidator></td>
            </tr>
            <tr>
                <td style="width: 100px">
                    E-mail:</td>
                <td style="width: 508px">
                    <asp:TextBox ID="emailTextBox" runat="server" Width="235px"></asp:TextBox><br />
                    <cc1:PropertyProxyValidator ID="emailValidator" runat="server" ControlToValidate="emailTextBox"
                        PropertyName="Email" RulesetName="RuleSetA" SourceTypeName="ValidationAspNetQuickStart.Customer"></cc1:PropertyProxyValidator></td>
            </tr>
            <tr>
                <td style="width: 100px; height: 25px;">
                    Rewards Points:</td>
                <td style="width: 508px; height: 25px;">
                    <asp:TextBox ID="rewardsPointsTextBox" runat="server"></asp:TextBox><br />
                    <cc1:PropertyProxyValidator ID="rewardPointsValidator" runat="server" ControlToValidate="rewardsPointsTextBox"
                         PropertyName="RewardPoints"
                        RulesetName="RuleSetA" SourceTypeName="ValidationAspNetQuickStart.Customer" OnValueConvert="rewardsPointsValidator_ValueConvert"></cc1:PropertyProxyValidator></td>
            </tr>
            <tr>
                <td style="width: 100px">
                </td>
                <td style="width: 508px">
                    <asp:Button ID="submitButton" runat="server" Text="Submit" OnClick="submitButton_Click" />&nbsp;
                    <asp:Label ID="validationResultsLabel" runat="server"></asp:Label></td>
            </tr>
        </table>
</div>

protected void rewardsPointsValidator_ValueConvert(object sender, Microsoft.Practices.EnterpriseLibrary.Validation.Integration.AspNet.ValueConvertEventArgs e)
...{
    string value = e.ValueToConvert as string;
    try
    ...{
        e.ConvertedValue = Int32.Parse(value);
    }
    catch
    ...{
        e.ConversionErrorMessage = "Rewards points is not a valid integer";
        e.ConvertedValue = null;
    }
}

protected void dateOfBirthValidator_ValueConvert(object sender, Microsoft.Practices.EnterpriseLibrary.Validation.Integration.AspNet.ValueConvertEventArgs e)
...{
    string value = e.ValueToConvert as string;
    try
    ...{
        e.ConvertedValue = DateTime.Parse(value, System.Globalization.CultureInfo.CurrentCulture);
    }
    catch
    ...{
        e.ConversionErrorMessage = "Date Of Birth is not in the correct format.";
        e.ConvertedValue = null;
    }
}