Linq insertonsubmit replaces existing data in database?

Hello everyone,

When I call the datacontextInstance.Insertonsubmit() and datacontextinstance.submitChanges(), it clears all the existing data in the database before inserting the new data.

How do I perform a real insert operation?

I want to add new data to the existing table without clearing out the existing data.

Thanks

P.S:

Here's my test code which i tried...

Code:

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {

            DataClasses1DataContext entities = new DataClasses1DataContext();
            for (int i = 200; i <= 300; i++)
            {
                textdata dt = new textdata();
                dt.id = i;
                dt.ipaddress = "172.168.3.2";
                dt.pcname = "testusr";
                dt.publicip = "test pub ip";
                dt.username = "testusr";
                dt.textdata1 = "Some DATA";
                dt.dttime = DateTime.Now;
                entities.textdatas.InsertOnSubmit(dt);
                entities.SubmitChanges(System.Data.Linq.ConflictMode.ContinueOnConflict);
            }
            foreach (textdata dtdata in entities.textdatas)
            {
                Console.WriteLine(dtdata.id.ToString());

            }
            entities.Dispose();
            Console.ReadLine();


        }
    }
}

---

I do change the loop from 100 to 200,300 to 400 etc before i run my app. But,the new records appear in the database and the old records are gone.


Here's my App.Config...

HTML Code:

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<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
    </configSections>
    <connectionStrings>
        <add name="ConsoleApplication2.Properties.Settings.Database1ConnectionString"
            connectionString="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database1.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
            providerName="System.Data.SqlClient" />
    </connectionStrings>
</configuration>

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