Javascript 如何控制ASP.NET验证程序控制客户端验证

以下是我的页面运行以下代码后的输出：

我正在使用ValidatorEnable客户端验证，如果您知道更好的方法，请告诉我

我的问题是:

我有一个gridview，复选框和下拉列表相邻，如屏幕截图所示

因此，如果用户选中该复选框，它将启用dropdownlist从中进行选择。 如果用户单击submit按钮，它将验证并要求用户从dropdownlist中选择任何选项

问题:

但问题是：它会验证所有行，而不是我单击的行

如何强制验证用户在复选框上选中的特定行

    <asp:GridView ID="gv" runat="server" AutoGenerateColumns="False" DataKeyNames="Id" OnRowDataBound="gv_RowDataBound"
            EnableModelValidation="True">
            <Columns>
                <asp:BoundField DataField="ID" ControlStyle-Width="250px" HeaderText="ID" SortExpression="ID" />
                <asp:BoundField DataField="FirstName" ControlStyle-Width="250px" HeaderText="FirstName"
                    SortExpression="FirstName" />
                <asp:BoundField DataField="LastName" ControlStyle-Width="250px" HeaderText="LastName"
                    SortExpression="LastName" />
                <asp:TemplateField>
                    <ItemTemplate>
                        <asp:CheckBox ID="checkbox1" runat="server" />
                        <asp:DropDownList ID="ddl_PaymentMethod" runat="server">
                                    <asp:ListItem Value="-1">----</asp:ListItem>
                                    <asp:ListItem Value="0">Month</asp:ListItem>
                                    <asp:ListItem Value="1">At End</asp:ListItem>
                                    <asp:ListItem Value="2">At Travel</asp:ListItem>
                                </asp:DropDownList>
                        <asp:RequiredFieldValidator ID="requiredDDL" runat="server" ControlToValidate="ddl_PaymentMethod"
                            ErrorMessage="Please select" InitialValue="-1" Display="Dynamic"></asp:RequiredFieldValidator>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Value">
                    <ItemTemplate>
                        <asp:TextBox ID="txt_Value" runat="server" Width="58px" Text="0"></asp:TextBox>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>


protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
 if (e.Row.RowType == DataControlRowType.DataRow)
 {
    CheckBox checkbox1 = (CheckBox)e.Row.FindControl("checkbox1");
    DropDownList ddl_PaymentMethod = (DropDownList)e.Row.FindControl("ddl_PaymentMethod");
    ddl_PaymentMethod.Attributes.Add("disabled", "disabled");

   checkbox1.Attributes.Add("onclick", "javascript:EnableCheckBox('" + ddl_PaymentMethod.ClientID + "','" + checkbox1.ClientID + "')"); 
 }
}

function EnableCheckBox(ddl, chk) {

  var ddl_PaymentMethod = document.getElementById(ddl);
  var _chkbox = document.getElementById(chk);
  if (_chkbox.checked) {
      ddl_PaymentMethod.disabled = false;
      validateCheckBox(ddl_PaymentMethod, true);
   }
   else { 
      ddl_PaymentMethod.disabled = true;
      validateCheckBox(ddl_PaymentMethod, false);
   }
}

function validateCheckBox(ddl, state) {
    ValidatorEnable(document.getElementById(ddl.id, state));             
}

让它为你工作。。。 gridview：

<asp:GridView ID="gv" runat="server" AutoGenerateColumns="False" DataKeyNames="Id"  OnRowDataBound="gv_RowDataBound">
        <Columns>
            <asp:BoundField DataField="ID" ControlStyle-Width="250px" HeaderText="ID" SortExpression="ID" />
            <asp:BoundField DataField="FirstName" ControlStyle-Width="250px" HeaderText="FirstName"
                SortExpression="FirstName" />
            <asp:BoundField DataField="LastName" ControlStyle-Width="250px" HeaderText="LastName"
                SortExpression="LastName" />
            <asp:TemplateField>
                <ItemTemplate>
                    <asp:CheckBox ID="checkbox1" runat="server" />
                    <asp:DropDownList ID="drpPaymentMethod" runat="server">
                                <asp:ListItem Value="-1">----</asp:ListItem>
                                <asp:ListItem Value="0">Month</asp:ListItem>
                                <asp:ListItem Value="1">At End</asp:ListItem>
                                <asp:ListItem Value="2">At Travel</asp:ListItem>
                            </asp:DropDownList>
                    <asp:RequiredFieldValidator ID="rfv" InitialValue="-1" ControlToValidate="drpPaymentMethod" Enabled="false" Display="Static" runat="server" ErrorMessage="RequiredFieldValidator"></asp:RequiredFieldValidator>

                </ItemTemplate>
            </asp:TemplateField>
            <asp:TemplateField HeaderText="Value">
                <ItemTemplate>
                    <asp:TextBox ID="txt_Value" runat="server" Width="58px" Text="0"></asp:TextBox>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>

javascript:

function UpdateValidator(chkID, drpID, validatorid) {
        //enabling the validator only if the checkbox is checked
        var enableValidator = $("#" + chkID).is(":checked");

        if (enableValidator)
            $('#' + drpID).removeAttr('disabled');
        else
            $('#' + drpID).attr('disabled', 'disabled');

        var vv = $('#' + validatorid).val();

        ValidatorEnable(document.getElementById(validatorid), enableValidator);
    }

---

请看这篇文章非常相似的问题希望它有帮助请看这篇文章非常相似的问题希望它有帮助谢谢你的链接，但代码不完整，仍然无法找出代码中缺少什么？我有类似的问题，并张贴在这里，请看一看我发布了一个答案，一切顺利！

function UpdateValidator(chkID, drpID, validatorid) {
        //enabling the validator only if the checkbox is checked
        var enableValidator = $("#" + chkID).is(":checked");

        if (enableValidator)
            $('#' + drpID).removeAttr('disabled');
        else
            $('#' + drpID).attr('disabled', 'disabled');

        var vv = $('#' + validatorid).val();

        ValidatorEnable(document.getElementById(validatorid), enableValidator);
    }