mysql - SQL插入没有结果

Question

从vb程序插入查询不会在access数据库中添加任何记录。

database connection class-->
Imports System.Data.OleDb
Public Class Data
    Shared dbconnection As OleDbConnection
    Shared dbcommand As OleDbCommand
    Shared dbadapter As OleDbDataAdapter
    Shared connectionString As String =     "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\DELL\Documents\Visual Studio 2013\Projects\Chakana saving and credit\Chakana saving and credit\Chakana.mdb"
Shared dbtable As DataTable
Public Shared Function loadData(query As String, Optional ReturnValue As Boolean = False)
    dbconnection = New OleDbConnection(connectionString)
    dbadapter = New OleDbDataAdapter
    dbtable = New DataTable()
    dbcommand = New OleDbCommand(query)
    dbcommand.CommandType = CommandType.TableDirect
    dbadapter.SelectCommand = dbcommand
    dbadapter.SelectCommand.Connection = dbconnection
    dbconnection.Open()
    'MsgBox("query lexecute")
    If ReturnValue = True Then
        dbadapter.Fill(dbtable)
        Return dbtable
    Else
         Return 0
    End If


End Function

下课

函数调用传递参数查询

 query = "INSERT INTO CustomerInfo (ClientId,FirstName) VALUES ('23','abce')"
    Data.loadData(query)

对传递 SELECT 查询的函数的其他调用工作正常，但是当我尝试插入查询并随后从访问中打开数据库时，它没有结果

Answer 1

查看 OleDbTransaction.Commit Method ()和 DbDataAdapter.Update Method它展示了如何在连接中打开和提交事务。