How to get the selected dropdown box value of one page from another page

Question

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page1.aspx

ASP.NET

<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>

C#

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

Posted 8-Oct-14 21:29pm

Bensingh

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Comments

[no name] 9-Oct-14 3:37am

Post your reporttype_SelectedIndexChanged Snip set too

Bensingh 9-Oct-14 5:08am

void showprogress()
{
if (reporttype.SelectedValue == "1")
{
pre1.Enabled = true;
pre2.Enabled = true;
pre3.Enabled = true;
pre4.Enabled = true;
pre5.Enabled = true;
pre6.Enabled = true;
pre7.Enabled = true;
pre8.Enabled = true;
pre9.Enabled = true;
pre10.Enabled = true;
pre11.Enabled = true;
pre12.Enabled = true;
pre13.Enabled = true;
curr1.Enabled = true;
curr2.Enabled = true;
curr3.Enabled = true;
curr4.Enabled = true;
curr5.Enabled = true;
curr6.Enabled = true;
curr7.Enabled = true;
curr8.Enabled = true;
curr9.Enabled = true;
curr10.Enabled = true;
curr11.Enabled = true;
curr12.Enabled = true;
curr13.Enabled = true;
curr14.Enabled = true;
curr15.Enabled = true;
}
else
{
pre1.Enabled = false;
pre2.Enabled = false;
pre3.Enabled = false;
pre4.Enabled = false;
pre5.Enabled = false;
pre6.Enabled = false;
pre7.Enabled = false;
pre8.Enabled = false;
pre9.Enabled = false;
pre10.Enabled = false;
pre11.Enabled = false;
pre12.Enabled = false;
pre13.Enabled = false;
pre10.Enabled = false;
curr1.Enabled = false;
curr2.Enabled = false;
curr3.Enabled = false;
curr4.Enabled = false;
curr5.Enabled = false;
curr6.Enabled = false;
curr7.Enabled = false;
curr8.Enabled = false;
curr9.Enabled = false;
curr10.Enabled = false;
curr11.Enabled = false;
curr12.Enabled = false;
curr13.Enabled = false;
curr14.Enabled = true;
curr15.Enabled = true;
}
}
protected void reporttype_SelectedIndexChanged(object sender, EventArgs e)
{
showprogress();
}

1 solution

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Sinisa Hajnal · Accepted Answer · 2014-10-08T21:40:00

On the first page, use SelectedIndexChanged [^]event on your dropdown and save its value into Session variable.

Alternatively (since you're using queryString in your code) - redirect directly from SelectedIndexChanged:

VB

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