Show DataTable from Application dictionary in gridview

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this is 1st page...............

C#

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

public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {


    }
    protected void btnsave_Click(object sender, EventArgs e)
    {
        DataTable dt = new DataTable();
        DataRow dr;
        dt.Columns.Add(new System.Data.DataColumn("Name", typeof(String)));
        dt.Columns.Add(new System.Data.DataColumn("Address", typeof(String)));
        dt.Columns.Add(new System.Data.DataColumn("Cell", typeof(String)));
        if (Application["CurrentData"] == null)
        {
           
            for (int i = 0; i < +1; i++)
            {
             dt= (DataTable)ViewState["CurrentData"];
               
            }
            dr = dt.NewRow();
            dr[0]= TextBox1.Text;
            dr[1] = TextBox2.Text;
             dr[2]= TextBox3.Text;
            dt.Rows.Add(dr);
            Application["CurrentData"] = dt;
            Response.Redirect("Default3.aspx");

        }
       
        

    }
}

this is 2nd page:

C#

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

public partial class Default3 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {


        DataTable dt = new DataTable();

        if (Application["CurrentData"] == null)
        {
            GridView1.DataSource = (DataTable)Application["CurrentData"];
            GridView1.DataBind();
        }
        Application["CurrentData"] = dt;
        }
    }

Posted 15-Mar-12 23:46pm

rockpune

Updated 16-Mar-12 0:02am

Manfred Rudolf Bihy

v3

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Manfred Rudolf Bihy · Answer 1 · 2012-03-16T00:00:00

On your second page there seems to be a small, but nevertheless significant error:

C#

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

public partial class Default3 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // Try to retrieve the DataTable from the application dictionary
        DataTable dt = (DataTable)Application["CurrentData"];

        // If there is a table found in the application dictionary use it to bind 
        // to the gridview in order to display the data 
        if (dt != null)
        {
            GridView1.DataSource = dt;
            GridView1.DataBind();
        }
        else
        {
            // The required DataTable object was not found so let's just set it to a new DataTable instance.
            Application["CurrentData"] = new DataTable();
        }
    }
}

Regards,

Manfred