如何獲取選中數據列表中的每個單選按鈕值？

Question

以下datalist表示問題和答案的集合。

如何在用戶點擊最終提交按鈕時將用戶選擇的正確答案單選按鈕值插入數據庫？

<asp:DataList ID="DataList1" runat="server" DataSourceID="AccessDataSource1" BackColor="White" BorderColor="#E7E7FF" BorderStyle="None" BorderWidth="1px" CellPadding="3" GridLines="Horizontal" onselectedindexchanged="rd_CS_CheckedChanged"> 
    <FooterStyle BackColor="#B5C7DE" ForeColor="#4A3C8C" /> 
      <AlternatingItemStyle BackColor="#F7F7F7" /> 
      <ItemStyle BackColor="#E7E7FF" ForeColor="#4A3C8C" /> 
      <SelectedItemStyle BackColor="#738A9C" Font-Bold="True" ForeColor="#F7F7F7" /> 
      <HeaderStyle BackColor="#4A3C8C" Font-Bold="True" ForeColor="#F7F7F7" /> 
      <ItemTemplate> 
       Q: 
      <asp:Label ID="QLabel" runat="server" Text='<%# Eval("Q") %>' /> 
      <br /> 
       A: 
       <asp:RadioButton ID="rd_CS" runat="server" GroupName="Casi" OnCheckedChanged="rd_CS_CheckedChanged" Text='<%# Eval("A") %>'></asp:RadioButton> 
       <br /> 
       B: 
       <asp:RadioButton ID="rd_CS2" runat="server" GroupName="Casi" OnCheckedChanged="rd_CS_CheckedChanged" Text='<%# Eval("B") %>'></asp:RadioButton> 
       <br /> 
       C: 
       <asp:RadioButton ID="rd_CS3" runat="server" GroupName="Casi" OnCheckedChanged="rd_CS_CheckedChanged" Text='<%# Eval("C") %>'></asp:RadioButton> 
       <br /> 
       D: 
       <asp:RadioButton ID="rd_CS4" runat="server" GroupName="Casi" OnCheckedChanged="rd_CS_CheckedChanged" Text='<%# Eval("D") %>'></asp:RadioButton> 

       <p style="color: #FF3300"> 
      <asp:Label ID="Correct_AnswerLabel" runat="server" 
       Text='<%# Eval("Correct_Answer") %>' Visible="False" /></p> 

    </ItemTemplate> 
    <SelectedItemStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="#663399" /> 
</asp:DataList> 

    <asp:AccessDataSource ID="AccessDataSource1" runat="server" 
     DataFile="~/App_Data/Quize.mdb" 
     SelectCommand="SELECT [Q],[A], [B], [C], [D], [Correct Answer] AS Correct_Answer FROM [QuizData]"> 
    </asp:AccessDataSource> 


    <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" /> 

Answer 1

在的button1_Click你的代碼隱藏，你可以改善這種方法：

protected void Button1_Click(object sender, EventArgs e) 
    { 
     foreach (DataListItem item in DataList1.Items) 
     { 
      RadioButton rd_CS = (RadioButton)item.FindControl("rd_CS"); 
      RadioButton rd_CS2 = (RadioButton)item.FindControl("rd_CS2"); 
      RadioButton rd_CS3 = (RadioButton)item.FindControl("rd_CS3"); 
      RadioButton rd_CS4 = (RadioButton)item.FindControl("rd_CS4"); 

      if (rd_CS.Checked) 
      { 
       Insert(rd_CS.Text); //Here you can insert whatever value you want, I tried with Text of radiobutton 
      } 
      if (rd_CS2.Checked) 
      { 
       Insert(rd_CS2.Text); //Here you can insert whatever value you want, I tried with Text of radiobutton 
      } 
      if (rd_CS3.Checked) 
      { 
       Insert(rd_CS3.Text); //Here you can insert whatever value you want, I tried with Text of radiobutton 
      } 
      if (rd_CS4.Checked) 
      { 
       Insert(rd_CS4.Text); //Here you can insert whatever value you want, I tried with Text of radiobutton 
      } 
     } 
    } 

而且插入函數定義將是一樣的：

private void Insert(string value) 
    { 
     //Your code here to save on database 
     OleDbConnection connection = new OleDbCommand("Your sql connection String"); 
     OleDbCommand command = new OleDbCommand("Your sql insert query"); 
     command.Connection = connection; 

     //Parámeters of command 
     OleDbParameter param = new OleDbParameter("Parameter name and next your type", OleDbType.VarChar); 
     param.Value = value; 

     command.Parameters.Add(param); 

     command.Connection.Open(); 

     command.ExecuteNonQuery(); 

     command.Connection.Close(); 

     //Your value is saved now 
    } 

這是如何保存的所有檢查你問問題在datalist上的radiobutton

Answer 2

這是我的代碼隱藏。當我點擊按鈕，然後重複選定的單選按鈕值保存在我的數據庫中。這是我的問題。我需要在我的數據庫只有獨特的價值

保護無效rd_CS_CheckedChanged（對象發件人，EventArgs的）{ 串 = myRadioText的String.Empty;

foreach (DataListItem item in DataList1.Items) 
    { 

     RadioButton rd_CS = (RadioButton)item.FindControl("rd_CS"); 
     RadioButton rd_CS2 = (RadioButton)item.FindControl("rd_CS2"); 
     RadioButton rd_CS3 = (RadioButton)item.FindControl("rd_CS3"); 
     RadioButton rd_CS4 = (RadioButton)item.FindControl("rd_CS4"); 


     if (rd_CS != null && rd_CS.Checked) 
     { 
      myRadioText = rd_CS.Text; 
      Label1.Text = myRadioText.ToString(); 

     } 
     else if (rd_CS2 != null && rd_CS2.Checked) 
     { 
      myRadioText = rd_CS2.Text; 
      Label1.Text = myRadioText.ToString(); 
     } 
     else if (rd_CS3 != null && rd_CS3.Checked) 
     { 
      myRadioText = rd_CS3.Text; 
      Label1.Text = myRadioText.ToString(); 
     } 
     else if (rd_CS4 != null && rd_CS4.Checked) 
     { 
      myRadioText = rd_CS4.Text; 
      Label1.Text = myRadioText.ToString(); 
     } 
     string str = Server.MapPath("~/App_Data/Quize.mdb"); 
     OleDbConnection ole = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + str + ";Persist Security Info=True"); 
     ole.Open(); 
     OleDbCommand cmd = new OleDbCommand("insert into Userdata values ('" + Label1.Text.Trim().Replace("'", "''") + "','" + Label1.Text.Trim().Replace("'", "''") + "',)", ole); 
     cmd.ExecuteNonQuery(); 

}