รบกวนช่วยอธิบาย Code ทีครับ ตรงที่มี **** แบบว่า งงๆอยู่ ขอบคุณครับ

Dim ConnnectionString As String = "?????????"
Dim Connection As New OleDbConnection(ConnnectionString)

Dim CommandString As String = "Select [Field1], [Field2], [Field3] From [MyTable] Where [FieldDate] Between @StartDate And @EndDate"

Dim Commnad As New Command(CommandString, Connection)
Command.Parameters.AddWithValue("@StartDate", DateTime.Parse("01/06/2010"))
Command.Parameters.AddWithValue("@EndDate", DateTime.Parse("29/06/2010"))

Dim Dt As New DataTable()

Dim DataAdapter As New OleDbDataAdapter()
DataAdapter.SelectCommand = Command
DataAdapter.Fill(Dt)

Command.Parameters.AddWithValue("@StartDate", DateTime.Parse("1/6/2010"))
Command.Parameters.AddWithValue("@EndDate", DateTime.Parse("29/6/2010"))