GridView Asp.net อยากทราบว่าหากไม่ให้ข้อมูลมันทับกันต้องทำยังไง

        '*** Create DataGrid ***'
        Dim myDataGrid As New DataGrid
        With myDataGrid
            .AutoGenerateColumns = True
            .DataSource = DataSource()
            .DataBind()
        End With
        Me.pnlMain2.Controls.Add(myDataGrid)

SqlDataAdapter adapter = new SqlDataAdapter(
      "SELECT * FROM Customers; SELECT * FROM Orders", connection);
adapter.TableMappings.Add("Table", "Customer");
adapter.TableMappings.Add("Table1", "Order");

adapter.Fill(ds);

//Count Table in ds 

// Create object panel

//Start Loop by table length

//create object gridview
 //panel.controls.add(gridview)
//gridview.datasource = ds.tables["TableName"]

//End Loop