如何从另一个页面获取一个页面的选定下拉框值

问题描述

page1.aspx

<asp:DropDownList ID="reporttype" runat="server" Width="57px" OnSelectedIndexChanged="reporttype_SelectedIndexChanged"

                                AutoPostBack="True">
                                <asp:ListItem Value="0">No</asp:ListItem>
                                <asp:ListItem Value="1">Yes</asp:ListItem>
                          </asp:DropDownList></td>

double TotAmount = 0;
            while (rd2.Read())
            {
                if (i < count)
                {
                    items[i] = new InvoiceDetails.InvoiceItems();
                    items[i].Description = AddNewLineChar(rd2[0].ToString(), 36);
                    items[i].Unit = rd2[1].ToString();
                    items[i].Quantity = rd2[2].ToString();
                    items[i].PrevProg = double.Parse(rd2[3].ToString()).ToString("0.00");
                    items[i].CurrProg = double.Parse(rd2[4].ToString()).ToString("0.00");
                    items[i].Rate = rd2[5].ToString();
                    items[i].Amount = double.Parse(rd2[6].ToString()).ToString("0.00");
                    
                    if(Request.QueryString["reporttype_value"] =0)
                    {
                        TotAmount += double.Parse(rd2[6].ToString());
                    }
                    else
                    {
                        TotAmount += (double.Parse(rd2[4].ToString()) - double.Parse(rd2[3].ToString())) * double.Parse(rd2[6].ToString());
                    }
                    i++;

if(Request.QueryString["reporttype_value"] =0) I need to get value here.
 Please let me know where I struck

推荐答案

Protected Sub Index_Changed(sender As Object, e As EventArgs) Handles your_drop_down_list.SelectedIndexChanged
      Response.Redirect(string.Format("your_second_page.aspx?reporttype_value={0}", your_drop_down_list.SelectedValue), true)
   End Sub

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