three tier inserting data using connectionless approach

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C#

Hi,
I am stuck at this codde. I am trying it from two weeks. Please read that whole code and tell me the problem. The error is, that it's creating exception at oOrdersDataAdapter.Update(oDS, "info"); (unable to fine datatable "info").
I am making insert button with 3 tier approach with connectionless approach. It is my last hope now.

In Database layer the Code is:

public class stddbl
    {
        OleDbConnection MAconn;

    
        public static string connectionString= "Provider=Microsoft.Jet.OLEDB.4.0;Data source=d:\\db.mdb";
        
public DataSet dal_search(stdprops p)
        {
            
                MAconn = new OleDbConnection();
                MAconn.ConnectionString = connectionString;
                MAconn.Open();
                DataSet oDS = new DataSet();
                string query = "SELECT * FROM info";

                OleDbDataAdapter oOrdersDataAdapter = new OleDbDataAdapter(query, connectionString);

                OleDbCommandBuilder oOrdersCmdBuilder = new OleDbCommandBuilder(oOrdersDataAdapter);

                oOrdersDataAdapter.Fill(oDS);

                oOrdersDataAdapter.Update(oDS, "info"); //there is error no  datatable info
                return oDS;
                
                  
        }

In Business Layer:

public class stdbo
{
    stddbl d = new stddbl();

    public DataSet bll_search(stdprops p)
    {
        //OleDbDataAdapter da = new OleDbDataAdapter();
        DataSet da = new DataSet();
        da = d.dal_search(p);
        return da;

    }

in Presentation Layer:

private void button1_Click(object sender, EventArgs e)
       {
           p.Name = textBox1.Text;
           p.Cell = textBox2.Text;

           DataSet oDS = obj.bll_search(p);
               //OleDbDataAdapter oDS = obj.bll_search();
               DataTable pTable = oDS.Tables["Table"];
               pTable.TableName = "info";

               // Insert the Data
               DataRow oOrderRow = oDS.Tables["info"].NewRow();
               oOrderRow["name"] = textBox1.Text;
               oOrderRow["cell"] = textBox2.Text;
               oDS.Tables["info"].Rows.Add(oOrderRow);
               //oDS.Tables["Orders"].Rows.Add(oOrderRow);
               //oOrdersDataAdapter.Update(oDS, "info");
               MessageBox.Show("inserted");


       }

I have the properties class as well:-

public class stdprops
    {


        private string name;
        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        private string cell;

        public string Cell
        {
            get { return cell; }
            set { cell = value; }
        }
    }
}