Question

通过这个网页，我想让用户创建问题，这样他就可以用其选项编写问题并指定正确的答案。问题是当我选择正确答案（单选按钮）时，我无法获得单选按钮的值

protected void btnSubmit_Click(object sender, EventArgs e)
{
    string sQsnDesc = "", sCorrectOptn = "", sOptns = "", stxtOption = "", sResult = "";

    sQsnDesc = txtQsnDesc.Text.ToString().Trim().Replace("\r\n", "<br>");

    if (btnSubmit.Text == "Submit")
    {
        sOptns = ddlOptions.SelectedValue.ToString().Trim();

        if (rbtnOpt1.Checked == true)
        {
            sCorrectOptn = "Option1";
        }
        else if (rbtnOpt2.Checked == true)
        {
            sCorrectOptn = "Option2";
        }
        else if (rbtnOpt3.Checked == true)
        {
            sCorrectOptn = "Option3";
        }
        else if (rbtnOpt4.Checked == true)
        {
            sCorrectOptn = "Option4";
        }
        else if (rbtnOpt5.Checked == true)
        {
            sCorrectOptn = "Option5";
        }

        sResult = SqlHelper.ExecuteNonQueryOutput(sCon, "PS_Quiz_QsnCreationMaster_Insert", sQsnDesc, sOptns, sCorrectOptn, txtMarks.Text, Session["LogInId"].ToString(), null);

当我尝试插入数据时，它表示“无法插入空值

”

你可以在这里查看代码 https://docs.google.com/file/d/0B2BDZn7hHcrwZG9SQnhKMG1rcE0 https://docs.google.com/file/d/0B2BDZn7hHcrwbUlZdmNxNzVWek0

**抱歉，我无法插入孔码，实际上这是我第一次在这个网站上发帖。

Answer 1

这是asp.net吗？您是否需要使用.findcontrol方法来检查您的radiobuttons的属性（在本例中为.checked）？

http://msdn.microsoft.com/en-us/library/486wc64h.aspx

无法从单选按钮获取值

1 个答案: