如何在同一GroupName中获取所选单选按钮的文本

问题描述

我有四个无线电按钮，组名全部相同。

i想要在代码隐藏中获取所选的一个文本。



这就是我在设计页面中添加控件的方法......

i have four radio butons,Group name of all is same.
i want to get the text of selected one in codebehind.

this is how i have added the controls in design page...

<tr>
<td colspan="4">
    <asp:RadioButton ID="opt1" runat="server" GroupName="a" />
   
    <asp:RadioButton ID="opt2" runat="server" GroupName="a" />
   
    <asp:RadioButton ID="opt3" runat="server" GroupName="a" />
   
    <asp:RadioButton ID="opt4" runat="server" GroupName="a" />
    </td>
</tr>

代码填充radiobuttons文字...

code to populate the radiobuttons text...

try
       {
           dsques = dbcon.ExecuteDataSet("select * from tblExamineeExam where examineeid='" + userid + "'");
           if (dsques.Tables.Count > 0 && dsques.Tables[0].Rows.Count > 0)
           {
               int i = Convert.ToInt32(lblqno.Text) - 1;
               //for (int i = no; i < dsques.Tables[0].Rows.Count; i++)
               //{
               lblqno.Text = i.ToString();
               lblquestion.Text = dsques.Tables[0].Rows[i][1].ToString();
               opt1.Text = dsques.Tables[0].Rows[i][2].ToString();
               opt2.Text = dsques.Tables[0].Rows[i][3].ToString();
               opt3.Text = dsques.Tables[0].Rows[i][4].ToString();
               opt4.Text = dsques.Tables[0].Rows[i][5].ToString();
               //}
           }
       }
       catch (Exception ex)
       {

       }

现在我想要选择的radiobutton文本..

now i want text of slected radiobutton..

sttring strAnswr = ;//need code here

谢谢！

Thanks!

推荐答案

<asp:RadioButton ID="opt1" runat="server" Text="opt1 radioButton selected" GroupName="a"/>
     <asp:RadioButton ID="opt2" runat="server" Text="opt2 radioButton selected" GroupName="a" />
     <asp:RadioButton ID="opt3" runat="server" Text="opt3 radioButton selected" GroupName="a" />
     <asp:RadioButton ID="opt4" runat="server" Text="opt4 radioButton selected" GroupName="a" />
       <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />

代码中我们可以看出我们的选中如下文字

in code being we can make out our selected text like below

protected void Button1_Click(object sender, EventArgs e)
         {
             string checkedval="";
             if (opt1.Checked)
             { checkedval = opt1.Text; }
             else if (opt2.Checked)
             { checkedval = opt2.Text; }
             else if (opt3.Checked)
             { checkedval = opt3.Text; }
             else if (opt4.Checked)
             { checkedval = opt4.Text; }
             Response.Write(checkedval);

         }

其他方式是使用radiobutton列表

Other way is to use radiobutton list

<asp:radiobuttonlist id="RadioButtonList1" runat="server" xmlns:asp="#unknown">
       <asp:listitem value="1">opt1</asp:listitem>
       <asp:listitem value="1">opt2</asp:listitem>
       <asp:listitem value="1">opt3</asp:listitem>
       <asp:listitem value="1">opt4</asp:listitem>
      </asp:radiobuttonlist>

protected void Button1_Click(object sender, EventArgs e)
{
    string checkedval="";
    checkedval= RadioButtonList1.SelectedItem.Text;
    Response.Write(checkedval);
}

string strAnswr= string.Empty;
if(opt1.Checked)
{
    strAnswr = opt1.Text;
}
else if(opt2.Checked)
{
    strAnswr = opt2.Text;
}
else if(opt3.Checked)
{
    strAnswr = opt3.Text;
}
else
{
    strAnswr = opt4.Text;
}

如果用 RadioButtonList 绑定它可以更简单。

It can be more simple if you bind it with RadioButtonList.

//suppose you have
<asp:radiobuttonlist id="RadioButtonList1" runat="server" xmlns:asp="#unknown">
</asp:radiobuttonlist>

string strAnswr= RadioButtonList1.SelectedItem.Text; // simple

希望它可以帮到你。

谢谢。

Hope it helps you.
Thanks.

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