下拉框赋值

Question

 for (int i = 1980; i < 2051; i++)
                {
                    ListItem item = new ListItem();
                    item.Value = i.ToString();
                    item.Text = i.ToString();
                    DDL_SelectYears.Items.Add(item);                }上面是赋值个下拉框的值
DDL_SelectYears.Items[DDL_SelectYears.SelectedIndex].Value.ToString();这是取值，但为什么取不到值呢？？？

Answer 1

可以取到的 是不是没处罚DDL_SelectYears_SelectedIndexChanged事件啊
AutoPost属性看看

Answer 2

试试这个，看行不text：DDL_SelectYears.SelectedItem.Text.ToString()
value:DDL_SelectYears.SelectedValue.ToString()

Answer 3

//年 
for (int i = 2011; i <= 3011; i++)
            {
                ddlYear.Items.Add(i.ToString());
            }
             //月
            for (int j = 1; j <= 12; j++)
            {
                if (j < 10)
                {
                    ddlMonth.Items.Add("0" + j.ToString());
                }
                else
                {
                    ddlMonth.Items.Add(j.ToString());
                }
            }
          //日
            for (int k = 1; k <= 31; k++)
            {
                if (k < 10)
                {
                    ddlDay.Items.Add("0" + k.ToString());
                }
                else
                {
                    ddlDay.Items.Add(k.ToString());
                }
            }  protected void Button1_Click(object sender, EventArgs e)
    {
        String year = ddlYear.SelectedValue;
        String month = ddlMonth.SelectedValue;
        String day = ddlDay.SelectedValue;
        String date = year + "-" + month + "-" + day;
        GridView1.DataSource = dll.GetPartInfo(txtNM.Text, date);
        GridView1.DataBind();
    }

Answer 4

request["你select控件的name"]来得到你要的value