验证复选框asp.net C＃ [英] validate checkbox asp.net c#

问题描述

我想验证两个复选框。其中之一必须按顺序检查的形式是有效的。我想用一个CustomValidator控件，并验证在服务器上。

I am trying to validate two checkboxes. One of them must be checked in order for the form to be valid. I would like to use a CustomValidator control, and validate on the server.

（此的.ascx页]是显示不同的.aspx页上的形式。）

(This .ascx page is a form that is displayed on a different .aspx page.)

首先，我把在复选框和我的.ascx页面上的CustomValidator控件。像这样的：

First I put in the checkboxes and a CustomValidator control on my .ascx page. Like this:

<tr>
        <td colspan="3">
            <input type="checkbox" runat="server" name="EmailCourse" class="" id="EmailCourse" value="" />
                Email course
<asp:CustomValidator id="CustomValidator1" runat="server" ErrorMessage="No checkbox checked" 
                 OnServerValidate="validateCheckBoxes_ServerValidate">
                </asp:CustomValidator>

        </td>
    </tr>
<tr>
        <td colspan="3">
            <input type="checkbox" runat="server" name="SpecialReport" class="" id="SpecialReport"  value="" />
                Special report
        </td>
    </tr>

然后，我说在$ C $的validateCheckBoxes_ServerValidate功能C-背后的.ascx.cs页面上，像这样的：

Then, I added the validateCheckBoxes_ServerValidate function in the code-behind, on the .ascx.cs page, like this:

            protected void validateCheckBoxes_ServerValidate(object source, ServerValidateEventArgs args)
        {
            if (!EmailCourse.Checked && !SpecialReport.Checked)
                args.IsValid = false;
            else
                args.IsValid = true;

    }

当我尝试打开使用此表单上我的本地网站，看看它是什么样子，我得到一个错误，像这样的页面：

When I try to open the page that uses this form on my local site to see what it looks like, I get an error, like this:

说明：该请求提供服务所需资源的编译过程中出现错误。请检查下列特定错误详细信息并适当地修改源$ C ​​$ C。

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

编译器错误信息：CS1061：'ASP.common_controls_specialreportform_ascx'不包含'validateCheckBoxes_ServerValidate的定义，并没有扩展方法'validateCheckBoxes_ServerValidate接受式的第一个参数
  ASP.common_controls_specialreportform_ascx'可以找到（是否缺少using指令或程序集引用？）

Compiler Error Message: CS1061: 'ASP.common_controls_specialreportform_ascx' does not contain a definition for 'validateCheckBoxes_ServerValidate' and no extension method 'validateCheckBoxes_ServerValidate' accepting a first argument of type 'ASP.common_controls_specialreportform_ascx' could be found (are you missing a using directive or an assembly reference?)

和

错误CS1061：'ASP.common_controls_specialreportform_ascx'不包含'validateCheckBoxes_ServerValidate的定义，并没有扩展方法'validateCheckBoxes_ServerValidate接受型ASP.common_controls_specialreportform_ascx'的第一个参数可以找到（是否缺少using指令或程序集引用？）

error CS1061: 'ASP.common_controls_specialreportform_ascx' does not contain a definition for 'validateCheckBoxes_ServerValidate' and no extension method 'validateCheckBoxes_ServerValidate' accepting a first argument of type 'ASP.common_controls_specialreportform_ascx' could be found (are you missing a using directive or an assembly reference?)

有谁知道这个错误的原因是什么？我在asp.net新的和我有这个麻烦了。

Does anyone know what the cause of this error is? I'm new at asp.net and am having trouble with this.

谢谢！

推荐答案

确定。因此，这里的工作是什么：

OK. So here's what worked:

由于harry180建议，我也需要切换输入型=复选框到ASP：复选框。

As harry180 suggested, I did need to switch the input-type="CheckBox" to asp:CheckBox.

这引发了运行时错误，这是我评论了关于以上。运行时错误是因为我还没有重新编译进行更改，以使ascs.designer.cs文件被修改后的溶液。

This triggered a run-time error, which I commented about above. The run-time error was because I had not recompiled the solution after making the change, in order that the ascs.designer.cs file be modified.

重新编译后，code ++工程。

After recompiling, the code works.

谢谢，harry180！你是了不起的！

Thanks, harry180! You're amazing!

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