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                        OleDbConnection1.Open()
                        Dim str As String = "update login set password = '999' where name ='222'"
                        Dim zhanghucommand As OleDbCommand = New OleDbCommand(str, OleDbConnection1)
                        ZhangHuCommand.CommandType = CommandType.Text
                        ZhangHuAdapter.UpdateCommand = zhanghucommand
                        ZhangHuAdapter.UpdateCommand.ExecuteNonQuery()
                        ZhangHuAdapter.Fill(ZhangHuDataSet, "login")
                 


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