为gridview绑定Radiobutton并再次将绑定值插入到数据库中

问题描述：

我正在处理一个项目我将Radiobutton绑定到网格视图，并将数据正确地抓取到GridView现在我想再次插入RadioButton的选中和未选中的值到数据库，但无法正常工作，它将所有RadioButton作为false传递。是为了澄清波纹管是否是代码。之前我很感谢你的回答。为gridview绑定Radiobutton并再次将绑定值插入到数据库中

代码隐藏

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.ExeQurey("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>

答

下面的代码将永远不会得到执行，因为它里面的!IsPostBack条件。

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.ExeQurey("insert into tblResult values('" + V + "','" + txtAnswered.Text + "',Null,NULL,NULL,Null)"); 
      }

您只需要移除!IsPostBack条件即可。欲了解更多详情，请查看this。

为gridview绑定Radiobutton并再次将绑定值插入到数据库中

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