講演者が相談のスケジュールを公開できるようにすることです。質問にはCan anybody help me to solve this error "NullReferenceException was unhandled"?という質問をした後、残念ながらタイトルに示されているような別のエラーが発生し、そのエラーはおそらく解決されます。今、私の問題は、フォームに表示されているように色のついたすべてのラベルをアクセスファイルに保存しているような公開ボタンをクリックしたときに、(lime = available、red = unavailable )。誰でも私がこのエラーを解決するのを助けることができます "OleDbExceptionは未処理"でしたか?
エラーが整数= cmd.ExecuteNonQuery(として暗いfである)
Public Class ConsultationSchedule
Private Sub publishbutton_Click(sender As Object, e As EventArgs) Handles publishbutton.Click
Dim label As String = "Label"
Dim time1 As String = vbNull
Dim time2 As String = vbNull
Dim time3 As String = vbNull
Dim time4 As String = vbNull
Dim time5 As String = vbNull
Dim day1 As String = vbNull
Dim day2 As String = vbNull
Dim day3 As String = vbNull
Dim day4 As String = vbNull
Dim day5 As String = vbNull
Dim available1 As String = vbNull
Dim available2 As String = vbNull
Dim available3 As String = vbNull
Dim available4 As String = vbNull
Dim available5 As String = vbNull
For i = 11 To 15
time1 = Label7.Text
For k = 16 To 20
time2 = Label8.Text
For t = 21 To 25
time3 = Label9.Text
For u = 26 To 30
time4 = Label10.Text
For bg = 33 To 37
time5 = Label32.Text
Next
Next
Next
Next
Next
For i = 11 To 37
If (i = 11) Then
day1 = Label2.Text
If Not Me.Controls(label & i.ToString) Is Nothing Then
If (Me.Controls(label & i.ToString).BackColor = Color.Lime) Then
available1 = "Available"
Else
available1 = "Unavailable"
End If
End If
ElseIf (i = 16) Then
day1 = Label2.Text
If Not Me.Controls(label & i.ToString) Is Nothing Then
If (Me.Controls(label & i.ToString).BackColor = Color.Lime) Then
available2 = "Available"
Else
available2 = "Unavailable"
End If
End If
ElseIf (i = 21) Then
day1 = Label2.Text
If Not Me.Controls(label & i.ToString) Is Nothing Then
If (Me.Controls(label & i.ToString).BackColor = Color.Lime) Then
available3 = "Available"
Else
available3 = "Unavailable"
End If
End If
ElseIf (i = 26) Then
day1 = Label2.Text
If Not Me.Controls(label & i.ToString) Is Nothing Then
If (Me.Controls(label & i.ToString).BackColor = Color.Lime) Then
available4 = "Available"
Else
available4 = "Unavailable"
End If
End If
ElseIf (i = 33) Then
day1 = Label2.Text
If Not Me.Controls(label & i.ToString) Is Nothing Then
If (Me.Controls(label & i.ToString).BackColor = Color.Lime) Then
available5 = "Available"
Else
available5 = "Unavailable"
End If
End If
End If
Next
For ht = 11 To 37
If (ht = 11) Then
day1 = Label2.Text
ElseIf (ht = 16) Then
day1 = Label2.Text
ElseIf (ht = 21) Then
day1 = Label2.Text
ElseIf (ht = 26) Then
day1 = Label2.Text
ElseIf (ht = 33) Then
day1 = Label2.Text
End If
Next
For k = 11 To 37
If (k = 12) Then
day2 = Label3.Text
ElseIf (k = 17) Then
day2 = Label3.Text
ElseIf (k = 22) Then
day2 = Label3.Text
ElseIf (k = 27) Then
day2 = Label3.Text
ElseIf (k = 34) Then
day2 = Label3.Text
End If
Next
For t = 11 To 37
If (t = 13) Then
day3 = Label4.Text
ElseIf (t = 18) Then
day3 = Label4.Text
ElseIf (t = 23) Then
day3 = Label4.Text
ElseIf (t = 28) Then
day3 = Label4.Text
ElseIf (t = 35) Then
day3 = Label4.Text
End If
Next
For u = 11 To 37
If (u = 14) Then
day4 = Label5.Text
ElseIf (u = 19) Then
day4 = Label5.Text
ElseIf (u = 24) Then
day4 = Label5.Text
ElseIf (u = 29) Then
day4 = Label5.Text
ElseIf (u = 36) Then
day4 = Label5.Text
End If
Next
For y = 11 To 37
If (y = 15) Then
day5 = Label6.Text
ElseIf (y = 20) Then
day5 = Label6.Text
ElseIf (y = 25) Then
day5 = Label6.Text
ElseIf (y = 30) Then
day5 = Label6.Text
ElseIf (y = 37) Then
day5 = Label6.Text
End If
Next
Dim sql As String
Dim sql2 As String
Dim sql3 As String
Dim sql4 As String
Dim sql5 As String
Dim cmd As OleDbCommand
Dim cmd2 As OleDbCommand
Dim cmd3 As OleDbCommand
Dim cmd4 As OleDbCommand
Dim cmd5 As OleDbCommand
Dim conn = New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=scheduledatabase.accdb;Persist Security Info=False;")
sql = "INSERT INTO consultationschedule([Time], weekDay, Available)VALUES(@time1,@day1,@available1)"
sql2 = "INSERT INTO consultationschedule([Time], weekDay, Available)VALUES(@time2,@day2,@available2)"
sql3 = "INSERT INTO consultationschedule([Time], weekDay, Available)VALUES(@time3,@day3,@available3)"
sql4 = "INSERT INTO consultationschedule([Time], weekDay, Available)VALUES(@time4,@day4,@available4)"
sql5 = "INSERT INTO consultationschedule([Time], weekDay, Available)VALUES(@time5,@day5,@available5)"
Using (conn)
conn.Open()
cmd = New OleDbCommand(sql, conn)
cmd.Parameters.Add(New OleDbParameter("@Time", time1))
cmd.Parameters.Add(New OleDbParameter("@weekDay", day1))
cmd.Parameters.Add(New OleDbParameter("@Available", available1))
cmd2 = New OleDbCommand(sql2, conn)
cmd2.Parameters.Add(New OleDbParameter("@Time", time2))
cmd2.Parameters.Add(New OleDbParameter("@weekDay", day2))
cmd2.Parameters.Add(New OleDbParameter("@Available", available2))
cmd3 = New OleDbCommand(sql3, conn)
cmd3.Parameters.Add(New OleDbParameter("@Time", time3))
cmd3.Parameters.Add(New OleDbParameter("@weekDay", day3))
cmd3.Parameters.Add(New OleDbParameter("@Available", available3))
cmd4 = New OleDbCommand(sql4, conn)
cmd4.Parameters.Add(New OleDbParameter("@Time", time4))
cmd4.Parameters.Add(New OleDbParameter("@weekDay", day4))
cmd4.Parameters.Add(New OleDbParameter("@Available", available4))
cmd5 = New OleDbCommand(sql5, conn)
cmd5.Parameters.Add(New OleDbParameter("@Time", time5))
cmd5.Parameters.Add(New OleDbParameter("@weekDay", day5))
cmd5.Parameters.Add(New OleDbParameter("@Available", available5))
Dim f As Integer = cmd.ExecuteNonQuery()
If (f >= 1) Then
ToolStrip1.Text += f.ToString & " record added successfully"
Else
ToolStrip1.Text += "Unable to add record"
End If
End Using
End Sub
メッセージは、キャッチしなかった例外がスローされたことを伝えています。 *その例外には、あなたが探しているエラーに関する情報が含まれています。例外をキャッチし、その情報が何であるかを調べます。 (私が*推測する* ... * 3 *を持つクエリに15個のパラメータを追加しています) – David
System.Data.dllに 'System.Data.OleDb.OleDbException'型の未処理の例外が発生しました 追加情報:INSERT INTO文の構文エラーです。それはあなたが話しているメッセージですか? – bwraths
3つのクエリに15個のパラメータを追加すると、データベースを含めて別の名前のクエリを追加する必要がありますか? – bwraths