Question

我正在开发一个项目，我将Radiobutton绑定到网格视图，它可以工作并再次正确地将数据提取到GridView我想要将已检查和未检查的RadioButton值插入数据库，但是不能正常工作它将所有RadioButton传递为false。澄清波纹管是它的代码。从我感谢你的回答之前。

背后的代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;

namespace Online_Examination_System
{
    public partial class FormAnswers : System.Web.UI.Page
    {

        int count;
        ClassCommon obj = new ClassCommon();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                count = 1;
            }
            DataTable dt = new DataTable();
            dt = obj.GetData("select Question from tblQuestions where QId='" + count + "'");
            gvQuestions.DataSource = dt;
            gvQuestions.DataBind();

            DataTable dt2 = new DataTable();
            dt2 = obj.GetData("select Answer from tblAnswers where QId='" + count + "'");
            gvAnswers.DataSource = dt2;
            gvAnswers.DataBind();

        }

        protected void btnSave_Click(object sender, EventArgs e)
        {
            count = 1;
            if (ViewState["view"] != null)
            {
                count = Convert.ToInt16(ViewState["view"]);
            }
            ViewState["view"] = count + 1;

            DataTable dt = new DataTable();
            dt = obj.GetData("select Question from tblQuestions where QId='" + ViewState["view"] + "'");
            gvQuestions.DataSource = dt;
            gvQuestions.DataBind();

            DataTable dt2 = new DataTable();
            dt2 = obj.GetData("select Answer from tblAnswers where QId='" + ViewState["view"] + "'");
            gvAnswers.DataSource = dt2;
            gvAnswers.DataBind();
            if (!IsPostBack)
            {
                for (int i = 1; i < gvAnswers.Rows.Count; i++)
                {
                    int V;
                    RadioButton rBtnAnswer = gvAnswers.Rows[i].FindControl("rbtnSelect") as RadioButton;
                    if (rBtnAnswer.Checked)
                    {
                        V = 1;
                    }
                    else
                    {
                        V = 0;
                    }
                    Label txtAnswered = gvAnswers.Rows[i].FindControl("lblAnswer") as Label;
                    obj.ExeQuery("insert into tblResult values('" + V + "','" + txtAnswered.Text + "',Null,NULL,NULL,Null)");
                }
            }
        }

HTML

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="FormAnswers.aspx.cs" Inherits="Online_Examination_System.FormAnswers" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <script type="text/javascript">
            function SelectRadioButton(radio) {
                var rdBtn = document.getElementById(radio.id);
                var rdBtnList = document.getElementsByTagName("input");
                for (i = 0; i < rdBtnList.length; i++) {
                    if (rdBtnList[i].type == "radio" && rdBtnList[i].id != rdBtn.id) {
                        rdBtnList[i].checked = false;
                    }
                }
            }
        </script>
        <title></title>
        <style type="text/css">
            .style1
            {
                width: 100%;
            }
        </style>
    </head>
    <body>
        <form id="form1" runat="server">
        <div>

            <table class="auto-style1">
                <tr>
                    <td class="auto-style1">
                        <asp:GridView ID="gvQuestions" runat="server" GridLines="None">
                        </asp:GridView>
                    </td>
                    <td>&nbsp;</td>
                </tr>
                <tr>
                    <td class="auto-style1">&nbsp;</td>
                    <td>&nbsp;</td>
                </tr>
                <tr>
                    <td class="auto-style1">
                        <asp:GridView ID="gvAnswers" runat="server" GridLines="None" AutoGenerateColumns="False">
                            <Columns>
                                <asp:TemplateField HeaderText="Select">
                                    <ItemTemplate>
                                        <asp:RadioButton ID="rbtnSelect" runat="server" />
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField HeaderText="Answer">
                                    <ItemTemplate>
                                        <asp:Label ID="lblAnswer" runat="server" Text='<%# Bind("Answer") %>'></asp:Label>
                                    </ItemTemplate>
                                </asp:TemplateField>
                            </Columns>

                        </asp:GridView>
                    </td>
                    <td>&nbsp;</td>
                </tr>
                <tr>
                    <td class="auto-style1">
                        <asp:Button ID="btnSave" runat="server" Text="Next" OnClick="btnSave_Click" />
                    </td>
                    <td>&nbsp;</td>
                </tr>
            </table>

        </div>
        </form>
    </body>
</html>

Answer 1

以下代码永远不会被执行，因为它在!IsPostBack条件内。

for (int i = 1; i < gvAnswers.Rows.Count; i++)
{
    int V;

    RadioButton rBtnAnswer = gvAnswers.Rows[i].FindControl("rbtnSelect") as RadioButton;

    if (rBtnAnswer.Checked)
    {
        V = 1;
    }
    else
    {
        V = 0;
    }

    Label txtAnswered = gvAnswers.Rows[i].FindControl("lblAnswer") as Label;
    obj.ExeQuery("insert into tblResult values('" + V + "','" + txtAnswered.Text + "',Null,NULL,NULL,Null)");
}

您需要做的就是删除!IsPostBack条件。

有关详细信息，请查看this。

将Radiobutton引入gridview＆amp;再次将绑定值插入数据库

1 个答案: