[aftfm]

الف شكر اخي العزيز vbnet

سؤال آخر

هذا كود لاراسال بيانات جدول قاعدة البيانات الى ملف نصي ولكن في حالة ما إذا كان هناك حقل فارغ يظهرا خطأ

كود :

With SaveFileDialog1
            .Title = "select"
            .Filter = "فقط الملفات النصية(*.txt|*.txt|All files(*.*)|*.*"
            .FilterIndex = 1
            If SaveFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
                Dim TextFile As New System.IO.StreamWriter(SaveFileDialog1.FileName, False, System.Text.Encoding.Default)
                Dim sSQL As String = String.Empty
                sSQL = "SELECT * FROM tbl1"
                Dim COMMAND As New OleDbCommand(sSQL, Con)
                If Con.State = ConnectionState.Open Then Con.Close()
                Con.Open()
                Dim READER As OleDbDataReader = COMMAND.ExecuteReader()
                If READER.HasRows = True Then
                    While READER.Read()
                        TextFile.WriteLine(READER.GetString(0) & "@" & READER.GetString(1) & "@" & READER.GetDateTime(2) & "@" & READER.GetString(3) & "@" & READER.GetString(4) & "@" _
                                           & READER.GetString(5) & "@" & READER.GetString(6) & "@" & READER.GetString(7) & "@" & READER(8) & "@" & READER.GetString(9) & "@")
                    End While
                    TextFile.Close()
                End If
                Con.Close()
            Else
                Exit Sub
            End If
        End With

ما هي مشكلة الحقول الفارغة

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