How to manage session for different users?

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I have published the site on IIS.
As the users login into the application and start entering the data the data should be maintained user wise and not be visible to other users.
As they click the save button the data of the different users gets combined into the grid.

For example: User1 added a row to the grid.
As the other users add their rows to the grid User1 has Four rows in his grid. The sessionID is different for all the users.

I am not able to understand why the data is merging.

How can I manage data for different users?

Please help, I am new to ASP.Net.

//Class
public class DataTable
{
    public static DataTable dt;

    public DataTable()
    {
      dt = new DataTable();
      dt.Columns.Add("Col1");
      dtColumns.Add("Col2");

    }
}

//Web-Page

protected void btSave_Click()
{
   //Code to add data to datatable. 
   DataTable.dt.Rows.Add(DataRows);

   Session["DataTable"] = DataTable.dt; //  saving dataTable to session.

   Grid.DataSource = (DataTable)Session["DataTable"];
}

Posted 6-Jan-11 20:42pm

Ashwani Dhiman

Updated 6-Jan-11 21:49pm

Dalek Dave

v5

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Comments

JF2015 7-Jan-11 2:46am

Added code formatting.

Dalek Dave 7-Jan-11 3:49am

Edited for Readability.

2 solutions

Solution 2

yes, you remove the

public static  DataTable  dt

to

public DataTable dt

Posted 7-Jan-11 21:00pm

velmahesh

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adocas · Accepted Answer · 2011-01-06T20:59:00

Are you creating a new instance of DataTable in every session?

If true, why you're using the static member in DataTable? I think that you're using the same datatable for every user.

Try to create a new instance of DataTable and disable the static member, It can solve the problem.

For this example, I changed the name of DataTable class, because it's the same that the original DataTable.

Ex:

//Classpublic
class MyDataTable
{
    public DataTable dt;
    public DataTable()
    {
        dt = new DataTable();
        dt.Columns.Add("Col1");
        dtColumns.Add("Col2");
    }
}

//Web-Page
protected void btSave_Click()
{   //Code to add data to datatable.
    MyDataTable dt = new MyDataTable();
    MyDataTable.dt.Rows.Add(DataRows);
    Session["DataTable"] = MyDataTable.dt;
    //  saving dataTable to session.
    Grid.DataSource = (DataTable)Session["DataTable"];
}