NoAliasはあなたに言ったように、ではなく、を作ります。は間違ったスタートになります。
は、このサンプルのようにパラメータ化されたSQL文を、試してみてくださいなど、引用符が倍増していることを忘れないでください、あなたのSQLにテキストを挿入することを忘れる：
私は4 colunms、CollCodeとCollSeqを持つテーブルを持っていますTermTypeとTermTextは変更可能なデータです このコードでは、SQLにtextvaluesが設定されている場合に、パラメータinstaedを持つ行を挿入、更新、または削除する方法について説明しています。 コードはアクセスのみ有効で、SQL ServerまたはMySQLはテンプレートごとに異なるコードを必要とし、プログラムの最初の部分で異なるDbTypes
を持っている：プログラムの処理部に
' select
Dim SQLaxSelect As String = "SELECT DISTINCT CollSeq FROM SearchTerms WHERE CollCode = ? ORDER BY CollSeq"
Dim DRaxSelect As OleDbDataReader = Nothing
Dim DCaxSelect As OleDbCommand
Dim axSelP1 As New OleDbParameter("@CollCode", OleDbType.VarChar, 4)
DCaxSelect = New OleDbCommand(SQLaxSelect, DbConn)
DCaxSelect.Parameters.Add(axSelP1)
' Insert
Dim DbConn As New OleDbConnection(SqlProv)
Dim SQLTwInsert As String = "INSERT INTO SearchTerms (CollCode, CollSeq, TermType, TermText) VALUES (?, ?, ?, ?)"
Dim DRTwInsert As OleDbDataReader = Nothing
Dim DCCTwInsert As OleDbCommand
Dim TwInsP1 As New OleDbParameter("@CollCode", OleDbType.VarChar, 4)
Dim TwInsP2 As New OleDbParameter("@CollSeq", OleDbType.Integer, 4)
Dim TwInsP3 As New OleDbParameter("@TermType", OleDbType.VarChar, 4)
Dim TwInsP4 As New OleDbParameter("@TermText", OleDbType.VarChar, 255)
DCCTwInsert = New OleDbCommand(SQLTwInsert, DbConn)
DCCTwInsert.Parameters.Add(TwInsP1)
DCCTwInsert.Parameters.Add(TwInsP2)
DCCTwInsert.Parameters.Add(TwInsP3)
DCCTwInsert.Parameters.Add(TwInsP4)
' Delete
Dim SQLTwDelete As String = "DELETE FROM SearchTerms WHERE CollCode = ? AND CollSeq = ? AND TermType = ? AND TermText = ?"
Dim DRTwDelete As OleDbDataReader = Nothing
Dim DCCTwDelete As OleDbCommand
Dim TwDelP1 As New OleDbParameter("@CollCode", OleDbType.VarChar, 4)
Dim TwDelP2 As New OleDbParameter("@CollSeq", OleDbType.Integer, 4)
Dim TwDelP3 As New OleDbParameter("@TermType", OleDbType.VarChar, 4)
Dim TwDelP4 As New OleDbParameter("@TermText", OleDbType.VarChar, 255)
DCCTwDelete = New OleDbCommand(SQLTwDelete, DbConn)
DCCTwDelete.Parameters.Add(TwDelP1)
DCCTwDelete.Parameters.Add(TwDelP2)
DCCTwDelete.Parameters.Add(TwDelP3)
DCCTwDelete.Parameters.Add(TwDelP4)
' Update
Dim SQLTwUpdate As String = "UPDATE SearchTerms SET TermType = ?, TermText = ? WHERE CollCode = ? AND CollSeq = ? AND TermType = ? AND TermText = ?"
Dim DRTwUpdate As OleDbDataReader = Nothing
Dim DCCTwUpdate As OleDbCommand
Dim TwUpdP1 As New OleDbParameter("@TermType", OleDbType.VarChar, 4)
Dim TwUpdP2 As New OleDbParameter("@TermText", OleDbType.VarChar, 255)
Dim TwUpdP3 As New OleDbParameter("@CollCode", OleDbType.VarChar, 4)
Dim TwUpdP4 As New OleDbParameter("@CollSeq", OleDbType.Integer, 4)
Dim TwUpdP5 As New OleDbParameter("@oldTermType", OleDbType.VarChar, 4)
Dim TwUpdP6 As New OleDbParameter("@oldTermText", OleDbType.VarChar, 255)
DCCTwUpdate = New OleDbCommand(SQLTwUpdate, DbConn)
DCCTwUpdate.Parameters.Add(TwUpdP1)
DCCTwUpdate.Parameters.Add(TwUpdP2)
DCCTwUpdate.Parameters.Add(TwUpdP3)
DCCTwUpdate.Parameters.Add(TwUpdP4)
DCCTwUpdate.Parameters.Add(TwUpdP5)
DCCTwUpdate.Parameters.Add(TwUpdP6)
を：
'select
axSelP1.Value = requested key value CollCode
Try
DRaxSelect = DCaxSelect.ExecuteReader()
Do While (DRaxSelect.Read())
'get value, first SELECTed value has index 0
CollSeq = GetDbIntegerValue(DRaxSelect, 0) ' routine to convert NULL in 0
Loop
Catch ex As Exception
your type of report exception
Finally
If Not (DRaxSelect Is Nothing) Then
DRaxSelect.Dispose()
DRaxSelect.Close()
End If
End Try
' Update
TwUpdP1.Value = new value TermType
TwUpdP2.Value = new value TermText
TwUpdP3.Value = key value CollCode
TwUpdP4.Value = key value CollSeq
TwUpdP5.Value = old value TermType to avoid updating a row that 1 millisecond earlier was modified by someone else
TwUpdP6.Value = old value TermText
Try
DRTwUpdate = DCCTwUpdate.ExecuteReader()
Catch ex As Exception
your type of report exception
Finally
If Not (DRTwUpdate Is Nothing) Then
DRTwUpdate.Dispose()
DRTwUpdate.Close()
End If
End Try
' Insert
TwInsP1.Value = new key value CollCode
TwInsP2.Value = new key value CollSeq
TwInsP3.Value = value TermType
TwInsP4.Value = value TermText
Try
DRTwInsert = DCCTwInsert.ExecuteReader()
Catch ex As Exception
your type of report exception
Finally
If Not (DRTwInsert Is Nothing) Then
DRTwInsert.Dispose()
DRTwInsert.Close()
End If
End Try
' Delete
TwDelP1.Value = key value CollCode
TwDelP2.Value = key value CollSeq
TwDelP3.Value = old value TermType to avoid deleting a row that 1 millisecond earlier was modified by someone else
TwDelP4.Value = old value TermText
Try
DRTwDelete = DCCTwDelete.ExecuteReader()
Catch ex As Exception
your type of report exception
Finally
If Not (DRTwDelete Is Nothing) Then
DRTwDelete.Dispose()
DRTwDelete.Close()
End If
End Try
（モジュールで）私の日常
Friend Function GetDbIntegerValue(ByVal Dr As OleDbDataReader, ByVal nr As Integer) As Integer
If IsDBNull(Dr.Item(nr)) Then
Return 0
Else
Return Dr.GetInt32(nr)
End If
End Function
複数のレコードを表示して挿入/編集/削除する場合は、SqlDataSourceを使用してASP.NetのGridViewを使用できます。あなたが探しているものなら、もっとアップロードすることができます。 http://www.asp.net/general/videos/lesson-8-working-with-the-gridview-and-formview – Win
これはvb.netよりも古典的なASPとよく似ています –