验证GridView中的文本框和下拉框

我试着在StackOverflow和其他网站上寻找这个，但找不到任何与我的问题相匹配的东西。基本上，我有一个gridview与下拉菜单和包含在行的文本框。用户需要从下拉菜单中选择一个选项，根据他们选择的选项，他们可能还需要在同一行的文本框中添加一些数据。作为其中的一部分，我想运行验证来提醒用户他们没有完成的字段-但我想尝试在asp.net c#中做到这一点，如果可能的话(不使用JavaScript，或JQuery，或其他任何东西，如果我可以避免它)。

我已经能够得到到目前为止:如果下拉框没有选择，或文本没有输入，gridview将验证-但它对每一行，即使只有一行是不正确的一个错误消息，而我只希望验证消息出现在那些行不是。

我的代码是:

<asp:UpdatePanel ID="upCurrentServicesGrid" UpdateMode="Conditional" runat="server">
    <ContentTemplate>
        <asp:GridView ID="grdviewCurrentSystems" CssClass="table-data currentSystemTable" UseAccessibleHeader="true" AutoGenerateColumns="false" runat="server">
            <Columns>
                <asp:BoundField DataField="systemName" HeaderText="Service" ItemStyle-Width="10%"/>
                <asp:TemplateField HeaderText="Status" ItemStyle-Width="39%">
                    <ItemTemplate>
                        <asp:DropDownList ID="aspdropSystemStatus" CausesValidation="false" runat="server" />
                            <div style="display:none">
                            <asp:TextBox ID="RowId" runat="server" Text='<%# Eval("id") %>' />
                            </div>
                            <div style="display:none">
                                <asp:TextBox ID="SelectedVal" runat="server" Text='<%# Eval("systemStatus") %>' />
                            </div>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Further information" ItemStyle-Width="50%">
                    <ItemTemplate>
                        <div>
                            <asp:TextBox ID="txtSystemStatusInfo" TextMode="MultiLine" MaxLength="300" CssClass="textarea1" runat="server" Text='<%# Eval("systemInformation") %>' />
                                <asp:CustomValidator
                                    CssClass="CustomValidator1"
                                    OnServerValidate="grdviewFurtherInfo_Validate" 
                                    Display="Dynamic"
                                    runat="server"
                                    ValidationGroup="valgrpLocal">
                                        <asp:ValidationMessageLocal 
                                            CssClass="aspvalmsgLocal" 
                                            ID="aspvalSystemStatus" 
                                            Title="Service statuses" 
                                            TextPassed="" 
                                            TextFailed="Check Status or Further Information fields" 
                                            runat="server" />
                                    </asp:CustomValidator>
                        </div>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Delete" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle">
                    <ItemTemplate>
                        <div>
                            <asp:LinkButton ID="lnkbtnDelSystem" CausesValidation="false" OnClick="lnkbtnDelSystem_Click" OnClientClick="return confirmDelete(this.id); return false;" CommandArgument='<%# Eval("id") %>' runat="server">
                                <span class="btn btn-small btn-spinner btn-grid">X</span> 
                            </asp:LinkButton>
                        </div>
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
    </ContentTemplate>
</asp:UpdatePanel>

后面的代码是:

protected void grdviewFurtherInfo_Validate(object sender, ServerValidateEventArgs e)
{
    bool valid = true;
    foreach (GridViewRow row in grdviewCurrentSystems.Rows)
    {
        usercontrols_asp_formctl_dropdownlist aspDrop = (usercontrols_asp_formctl_dropdownlist)row.FindControl("aspdropSystemStatus");
        usercontrols_asp_formctl_textbox aspTxt = (usercontrols_asp_formctl_textbox)row.FindControl("txtSystemStatusInfo");

        if (aspDrop.SelectedValue == "")
        {
            valid = false;
        }
        else if (aspDrop.SelectedValue != "1" && string.IsNullOrEmpty(aspTxt.Text))
        {
            valid = false;
        }
        e.IsValid = valid;
    }

}

谁能给点建议?

谢谢!:)

    int selRowIndex = ((GridViewRow)(((DropDownList )sender).Parent.Parent)).RowIndex;
         usercontrols_asp_formctl_dropdownlist aspDrop = (usercontrols_asp_formctl_dropdownlist)grdviewCurrentSystems.Rows[selRowIndex].FindControl("aspdropSystemStatus");
            usercontrols_asp_formctl_textbox aspTxt = (usercontrols_asp_formctl_textbox)grdviewCurrentSystems.Rows[selRowIndex].FindControl("txtSystemStatusInfo");
 if (aspDrop.SelectedValue == "")
        {
            valid = false;
        }
        else if (aspDrop.SelectedValue != "1" && string.IsNullOrEmpty(aspTxt.Text))
        {
            valid = false;
        }
        e.IsValid = valid;

<asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="Input incorrect" ValidationGroup='<%# "valGroup_" + Container.DataItemIndex %>' ClientValidationFunction="myValidator" ControlToValidate="aspdropSystemStatus" Display="Dynamic"></asp:CustomValidator>

<script type="text/javascript">
    function myValidator(oSrc, args) {
        //get the rownumber that fires the validator
        var rowNumber = oSrc.id.split("_")[3];
        //get the id of the dropdown of the row
        var DropDownID = "mainContentPane_grdviewCurrentSystems_aspdropSystemStatus_" + rowNumber;
        //get the id of the textbox of the row
        var TextBoxID = "mainContentPane_grdviewCurrentSystems_txtSystemStatusInfo_" + rowNumber;
        //is the row correctly filled out
        if (document.getElementById(DropDownID).selectedIndex > 0 && document.getElementById(TextBoxID).value == "") {
            args.IsValid = false;
        } else {
            args.IsValid = true;
        }
    }
</script>