when am inserting 2nd record lossing previous recods any one tel me how can i see all records

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this is my code........

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)));



            dr = dt.NewRow();

            dr[0] = TextBox1.Text;
            dr[1] = TextBox2.Text;
            dr[2] = TextBox3.Text;
            dt.Rows.Add(dr);

            Session["CurrentData"] = dt;

            clearfields();
        
        
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Redirect("Default3.aspx");

    }
    private void clearfields()
    {
        TextBox1.Text = "";
        TextBox2.Text = "";
        TextBox3.Text = "";
    
    
    }
}

Posted 18-Mar-12 23:36pm

rockpune

Updated 18-Mar-12 23:37pm

Abhinav S

v2

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Abhinav S 19-Mar-12 5:37am

Code tags added.

Anuj Banka 19-Mar-12 5:45am

dt = Session["CurrentData"];
dt.Rows.Add(dr);

3 solutions

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Mario Majčica · Answer 1 · 2012-03-19T00:06:00

You are not restoring the data table that you saved in session.

Try this

C#

private DataTable CreatEmptyDT()
{
    DataTable dt = new DataTable();

    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)));

    return dt;
}

public DataTable CurrentData
{
    get
    {
        object o = Session["CurrentData"];
        if (o == null)
            return CreatEmptyDT();
        else
            return (DataTable)o;
    }
    set { Session["CurrentData"] = value; }
}

protected void btnsave_Click(object sender, EventArgs e)
{
    DataTable dt = CurrentData;

    DataRow dr = dt.NewRow();

    dr[0] = TextBox1.Text;
    dr[1] = TextBox2.Text;
    dr[2] = TextBox3.Text;
    dt.Rows.Add(dr);

    CurrentData = dt;

    clearfields();
}

Cheers

Sushil Mate · Answer 2 · 2012-03-18T23:46:00

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();
        if (Session["CurrentData"] != null)
        {
            dt = (DataTable)Session["CurrentData"];
        }
        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)));



        dr = dt.NewRow();

        dr[0] = TextBox1.Text;
        dr[1] = TextBox2.Text;
        dr[2] = TextBox3.Text;
        dt.Rows.Add(dr);

        Session["CurrentData"] = dt;

        clearfields();


    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Redirect("Default3.aspx");

    }
    private void clearfields()
    {
        TextBox1.Text = "";
        TextBox2.Text = "";
        TextBox3.Text = "";


    }
}

Anuj Banka · Answer 3 · 2012-03-18T23:41:00

Solution 1

before inserting second value.set

dt = Session["CurrentData"];

Posted 18-Mar-12 23:41pm

Anuj Banka

Comments

rockpune 19-Mar-12 5:43am

at which place i add this .......dt = Session["CurrentData"];

Anuj Banka 19-Mar-12 5:47am

dt = Session["CurrentData"];
dt.Rows.Add(dr);

rockpune 19-Mar-12 5:48am

i write like this

dt = (DataTable)Session["CurrentData"];

dr = dt.NewRow();

this is correct?

Anuj Banka 19-Mar-12 5:50am

if (Session["CurrentData"] != null)
{
dt = (DataTable)Session["CurrentData"];
}
dt.Rows.Add(dr);

when am inserting 2nd record lossing previous recods any one tel me how can i see all records

3 solutions

Solution 3

Solution 2

Solution 1

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