C# request query string

I am requesting a a querystring from an asp page

<%varASP = "Some value"%>

	<script>
	function show()
	            {
	url = "http://usvawebapp/payroll2/dropdown/billing.aspx?value=<%varASP%>";
 
   
   window.location.href=url 
				} 
	</script>

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Now i want use this value as a query string in a aspx page.  I can get the page to open fron asp.  I just don know how to use redirect.
protected void submit_Click(object sender, EventArgs e)
  {
     //tb1.Text = =<%varASP%>";

      details2.SelectCommand = "SELECT top 5 bachnumb, emp_id, patsno, SUM(hours * payrate) AS totalpay, SUM(hours * billrate) AS totalbill FROM GP_TimesheetLoad WHERE 1= " + tb1.Text +  " GROUP BY emp_id, patsno, bachnumb ";
      Response.Redirect("billing.aspx?id=" + tb1.Text);
      
      // details2.SelectCommand = Message1.Text;
      Message1.Text = "found";
      
      



  }

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jaypappasAsked:
Who is Participating?
 
mayank_joshiConnect With a Mentor Commented:
on asp page the url should be:-

url = "http://usvawebapp/payroll2/dropdown/billing.aspx?value=<%=varASP%>

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you are missing the '=' operator inside <% %>
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HugoHiaslCommented:
Hmm.. what do you want to have as result?

What you are doing should work.

In the called page you can get the value with:

string id = Request.QueryString["id"]
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jaypappasAuthor Commented:
its redirecting to http://usvawebapp/payroll2/dropdown/billing.aspx without the querystring.  It shoulb be
http://usvawebapp/payroll2/dropdown/billing.aspx?={some value}
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gdupadhyayCommented:
You have to use  Response.Redirect("webpagename.aspx?Q_Name=" + some value

Please see below URL for more detail:

http://www.codeproject.com/KB/aspnet/QueryString.aspx
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jaypappasAuthor Commented:
@Mayank.  Thats fine I got that working thanks.

@ everybody-- But I am still having troubles I posted all the code.


<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Register assembly="System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" namespace="System.Web.UI.WebControls" tagprefix="asp" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
  protected void Page_Load(object sender, EventArgs e)
  {
      
       
      
      
  }


  protected void submit_Click(object sender, EventArgs e)
  {

       
      
      
      details2.SelectCommand = "SELECT top 5 bachnumb, emp_id, patsno, SUM(hours * payrate) AS totalpay, SUM(hours * billrate) AS totalbill FROM GP_TimesheetLoad WHERE 1= " + tb1.Text +  " GROUP BY emp_id, patsno, bachnumb ";
      Response.Redirect("billing.aspx?id=" + tb1.Text);
      
      Message1.Text= details2.SelectCommand ;
     
      
      



  }
</script>

    
    
</script>
<html xmlnsSQL Authentication</title>
    <style type="text/css">
body
{
background-color:white;
}
h1
{
background-color:#00ff00;
}
p
{
background-color:rgb(255,0,255);
}
</style>
<head>
     <form id="form1" runat="server" method="post">

<asp:Image id="Image1" runat="server"
           AlternateText="Image text"
           ImageAlign="left"
           ImageUrl="wflow.gif"/>


     <asp:SqlDataSource ID="details2" runat="server" 
         ConnectionString="<%$ ConnectionStrings:details2 %>" 
         ProviderName="<%$ ConnectionStrings:details2.ProviderName %>" 
         SelectCommand="SELECT top 5 bachnumb, emp_id, patsno, SUM(hours * payrate) AS totalpay, SUM(hours * billrate) AS totalbill FROM GP_TimesheetLoad WHERE (1 = 1) AND (2 = 2) GROUP BY emp_id, patsno, bachnumb">
     </asp:SqlDataSource>


<asp:GridView ID="GridView1" runat="server"
    AutoGenerateColumns="False"
    DataSourceID="details2" EnableModelValidation="True">
    <Columns>
        <asp:BoundField DataField="bachnumb" HeaderText="bachnumb1"
            SortExpression="bachnumb" />
        <asp:BoundField DataField="emp_id" HeaderText="emp_id"
            SortExpression="emp_id" />
        <asp:BoundField DataField="patsno" HeaderText="patsno"
            SortExpression="patsno" />
        <asp:BoundField DataField="totalpay" HeaderText="totalpay"
            SortExpression="totalpay" ReadOnly="True" />
     <asp:BoundField DataField="totalbill" HeaderText="totalbill"
            SortExpression="totalbill" ReadOnly="True" />

    </Columns>
</asp:GridView>
<asp:TextBox id="tb1" runat="server" />

<asp:Button id = "submit" runat="server" onclick="submit_Click" text = "submit" />
<asp:label id="Message1" runat ="server"/><br />


</form>
</head>
<body/>
</html>

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gdupadhyayCommented:
there is no issue with
Response.Redirect("billing.aspx?id=" + tb1.Text);

there is some issue with details2.SelectCommand
please debug and check each and every values.
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jaypappasAuthor Commented:
I am trying to to debug the details2.slectcommand with the  
  Message1.Text= details2.SelectCommand ;

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.  The message only shows up when I take out
 Response.Redirect("billing.aspx?id=" + tb1.Text);

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gdupadhyayCommented:
Try to access the query string on Page_Load event not on submit_Click.

Your error:
You redirect to another page and try to reading the values on previous page. Its not possible.
You need to read the query string on new page.

If you redirect on same page, you have to read query string on Page_Load event.
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