How to combine more than one datatable to another datatable ?

DataSet ds = new DataSet();
           DataTable tbl1 = new DataTable();
           ds.Tables.Add(tbl1);
           DataColumn col1 = new DataColumn("EmpID", Type.GetType("System.Int32"), "");
           col1.AutoIncrement = true;
           col1.AutoIncrementSeed = 1;
           DataColumn col2 = new DataColumn("Name", Type.GetType("System.String"), "");
           tbl1.Columns.Add(col1);
           tbl1.Columns.Add(col2);

           tbl1.PrimaryKey = new DataColumn[1] { col1 };

           DataRow rw1 = tbl1.NewRow();
           rw1["Name"] = "Manoj Savalia";
           tbl1.Rows.Add(rw1);

           DataRow rw2 = tbl1.NewRow();
           rw2["Name"] = "Savalia";
           tbl1.Rows.Add(rw2);
           ds.AcceptChanges();

           DataTable tbl2 = tbl1.Clone();
           DataColumn col3 = new DataColumn("Address", Type.GetType("System.String"), "");
           tbl2.Columns.Add(col3);

           DataRow rw3;
           rw3 = tbl2.NewRow();
           rw3["EmpID"] = 10;
           rw3["Name"] = "Test";
           rw3["Address"] = "Ahmedabad";
           tbl2.Rows.Add(rw3);

           ds.Merge(tbl2, false, MissingSchemaAction.Add);