ผมนำตัวแปรที่ดึงจากฐานข้อมูล เพื่อส่งไปให้ crystal report ออกรายงาน แต่ถ้าในฐานข้อมูล มีฟิวล์เดียว ระบบแจ้งเตือนว่า "ไม่พบข้อมูล"

  If cn.State = ConnectionState.Closed Then cn.Open()
        sql3 = "select top 1 Idprintdocument from printdocument order by Idprintdocument DESC"
        cmd = New OleDbCommand(sql3, cn)
        adp = New OleDbDataAdapter(cmd)
        data = New DataSet
        adp.Fill(data, "Idprintdocument")
        If data.Tables("Idprintdocument").Rows.Count <> 0 Then
            tmpid = CInt(data.Tables("Idprintdocument").Rows(0).Item("Idprintdocument"))
            tmpid = ((tmpid) + 1)
            Idsex3 = tmpid.ToString
            Label8.Text = tmpid.ToString
        Else
            tmpid = 1
            Idsex3 = tmpid.ToString
            Label8.Text = tmpid.ToString
        End If

 If cn.State = ConnectionState.Closed Then cn.Open()
                cmd = New OleDbCommand(sql3, cn)
                data = New DataSet1
                adp = New OleDbDataAdapter(cmd)
                Dim dd As Date = Date.Now()
                For i As Integer = 0 To DataGridView2.RowCount - 1
                    sql3 = ......

                    '  Cm  SqlCommand
                    With cmd
                        .CommandType = CommandType.Text
                        .CommandText = sql3
                        .Connection = cn
                        .ExecuteNonQuery()
                    End With
                    '  Idsex3 = tmpid.ToString
                Next

                frmOut.Show()

ฟอร์มที่สร้าง crystalreportview
Option Strict On
Imports System
Imports System.Data
Imports System.Data.OleDb
Imports System.Globalization
Imports System.Threading
Imports CrystalDecisions.CrystalReports.Engine
Imports CrystalDecisions.ReportSource
Imports CrystalDecisions.Shared
Public Class frmOut
    Dim conn As New OleDbConnection
    Dim Da As OleDbDataAdapter
    Dim Cm As OleDbCommand
    Dim StrSql As String
    Private Sub frmOut_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Try
            Cursor.Current = Cursors.WaitCursor
            With conn
                If .State = ConnectionState.Open Then .Close()
                .ConnectionString = ConStr
                .Open()
            End With

            StrSql &= " Select *"
            StrSql &= " From printdocument "
            StrSql &= " where Idprintdocument = " & CInt(Idsex3) & ""

            'MsgBox(Idsex3)

            Da = New OleDbDataAdapter(StrSql, conn)
            Dim Ds As New DataSet1
            Ds.Clear()
            Da.Fill(Ds, "printdocument1")
            'Dim Idsex1 As String = Idsex
            If Ds.Tables("printdocument1").Rows.Count <> 0 Then
                Dim rpt As New CrystalReportOut
                rpt.SetDataSource(Ds.Tables("printdocument1"))
                CrystalReportViewer1.ReportSource = rpt
                CrystalReportViewer1.Refresh()
                '  CrystalReportViewer1.PrintReport()
                '  Close()
            Else
                MsgBox("ไม่พบข้อมูลที่ค้นหา", MsgBoxStyle.Critical, "ผลการทำงาน")
                Me.Close()
            End If
            Cursor.Current = Cursors.Default
        Catch ex As Exception
            MsgBox("พบข้อผิดพลาดในการทำงาน" & vbCrLf & ex.Message, MsgBoxStyle.Critical, "ผลการทำงาน")
            End Try

    End Sub

End Class