How to retrieve listbox items into next page by using session

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Friends,

I have used listbox control that populating values from sql table.In the gridview bound field I have used the listbox column.If we click select link in gridview it will go to next page and view the selected row's items.But in the next page selected list box item is not viewing in next page.

Default4.aspx

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
           AutoGenerateEditButton="True" AutoGenerateSelectButton="True"
           onselectedindexchanged="GridView1_SelectedIndexChanged">
           <Columns>
               <asp:BoundField DataField="BugNumber" HeaderText="Id" />
           </Columns>
       </asp:GridView>

Default4.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;

public partial class Default4 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection("Data Source=CDC015;Initial Catalog=Dashboard;Persist Security Info=True;User ID=prima;Password=123abcd*");
        con.Open();
        SqlCommand cmd = new SqlCommand("select BugNumber from Bug", con);
        SqlDataAdapter ada = new SqlDataAdapter(cmd);
        DataSet ds = new DataSet();
        ada.Fill(ds, "sample");
        GridView1.DataSource = ds.Tables[0];
        GridView1.DataBind();
        
    }
    protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
    {
        foreach (GridViewRow row in GridView1.Rows)
        {
            if (GridView1.SelectedRow != null)
            {

                GridViewRow selectedRow = GridView1.SelectedRow;

                Session["BugNumber"] = selectedRow.Cells[1].Text;
                Response.Redirect("Default5.aspx");
            }
        }
    }
}

Default5.aspx

<asp:ListBox ID="ListBox1" runat="server"></asp:ListBox>

Default.aspx.cs

if (this.PreviousPage != null)
       {

       }
       string PrimaryImpactedArea = System.Web.HttpContext.Current.Session["BugNumber"].ToString();
       ListBox1.SelectedItem.Text = PrimaryImpactedArea;

In the above code i am unable to see the selected listbox item from gridview column into next page.Plz help me.

Thanks in advance

Posted 13-Nov-13 19:01pm

Member 10234093

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Comments

Er Daljeet Singh 14-Nov-13 1:26am

Dear first of all add some value in the listbox ,
second check wether the session is having or not.
third i session is having value then that value should be present in the listbox

2 solutions

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CodeBlack · Answer 1 · 2013-11-13T20:22:00

Solution 1

Try below code in Default5.aspx.cs page to keep session item selected in listbox1:

C#

foreach (ListItem item in ListBox1.Items)
{
  var PrimaryImpactedArea = Session["BugNumber"];
  if (PrimaryImpactedArea != null && item.Text == PrimaryImpactedArea)
  {
    item.Selected = true;
  }
}

Posted 13-Nov-13 20:22pm

CodeBlack

Chetan Patel · Answer 2 · 2013-11-13T21:46:00

Solution 2

You are Binding your datagrid in Page_Load event.
So it every time Bind it when it get Post Back. Just you need to do is
Put it inside if Block with Check IsNotPostback

If(Page.IsNotPostBack)
{
Logic of Datagrid Binding
}

Posted 13-Nov-13 21:46pm

Chetan Patel