a socket server program genrates stck overflow exception while creating an object

namespace FTServerCode
{
    public partial class SERVER : Form
    {
        match(string string)
        {
         }
//here on this form my oledbadapter is place

     }
class ftsev
{
method startserver()//which is recursivelly called server must continiously run
{
//here a socket which is listening to a port continiously
//and after receiving data i want to check that data in a Microsoft access table using
//the oledbadapter and dataset 


//but the problem is how can i access olebadapter's object here to execute query like

this.oleDbDataAdapter1.SelectCommand.CommandText =
                   "SELECT Vm_ip FROM UserDB WHERE Usrnm=" + "'" + usrnm +"'";
               dataSet11.Clear();
               this.oleDbDataAdapter1.Fill(this.dataSet11.Tables["UserDB"]);

// here in ftsev class....is there any way to do so....
}

//......
}