รบกวนแนะนำหนังสือ VB.Net ที่เชื่อมต่อกับฐานข้อมูล SQL Server หน่อยครับ

        Dim objConn As New SqlConnection
        Dim objCmd As New SqlCommand
        Dim strConnString, strSQL As String

        strConnString = "Server=localhost;UID=sa;PASSWORD=;Database=mydatabase;Max Pool Size=400;Connect Timeout=600;"
        objConn.ConnectionString = strConnString
        objConn.Open()

        Dim intNumRows As Integer
        strSQL = "SELECT COUNT(*) FROM member WHERE Username = '" & Me.txtUsername.Text & "' AND Password = '" & Me.txtPassword.Text & "' "
        objCmd = New SqlCommand(strSQL, objConn)