Large text file insertion in Ms access Datafield

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C#

C#4.0

MS-Access

I have to insert large text file(10,000 lines) in access database field (coloum).But the problem is when i insert large there is data shifting.
i.e when i check the original file with the file i have inserted in database , data is not inserted sequentially. but same code works with small text file.

Here is the code for inserting file in database

private void insert(object sender, EventArgs e)
{

try
{
con = new OleDbConnection(@"Provider = Microsoft.JET.OLEDB.4.0;data source =EDMDatabase.mdb;Jet OLEDB:Database password =;");
con.Open();

file2 = new StreamReader(Application.StartupPath + "\\" + "FLEXPMAC.DAT");

while (file2.EndOfStream==false)
{
string setupstr1 = null;

if (file2.ReadLine() != null)
setupstr1 = file2.ReadLine();


//Inserting text file in database(EDMDatabase.mdb) table(ex) column(xyz)

cmd = new OleDbCommand("insert into ex (xyz) values('" + setupstr1 + "')", con);

cmd.ExecuteNonQuery();
}

}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}

Please help...where i can find the anwer..and thanxs in advance.