db/clsTVoucherGroupDbAccess.vb

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''' <summary>
''' 凭证类别数据操作类，对应实例ClsVoucherGroup
''' </summary>
Public Class ClsTVoucherGroupDbAccess
    Inherits ClsBaseDbAccess

    Public Sub New(ByVal s As String)
        MyBase.New(s, TABLE_NAME_T_VOUCHER_GROUP)
    End Sub

    ''' <summary>
    ''' 两个参数，s - 连接字串；n - 表名
    ''' </summary>
    ''' <param name="s"></param>
    ''' <param name="n"></param>
    Public Sub New(ByVal s As String, ByVal n As String)
        MyBase.New(s, n)
    End Sub

    Public Function DeleteVoucherGroup(ByVal tmpCls As ClsTVoucherGroup) As Integer
        Dim tmpReturn As Integer = 0

        Try

            Dim tmpSql As String
            Dim tmpDbAccess = GetConnection()

            Dim tmpParas(0) As OleDb.OleDbParameter

            '打开数据库
            tmpDbAccess.DbOpen()
            '构造查询语句
            tmpSql = "Delete From [" & Me.AppTableName & "] "
            tmpSql &= " Where [GroupId] = @GroupId "


            '构造参数集合
            tmpParas(0) = New OleDb.OleDbParameter("@GroupId", OleDb.OleDbType.Integer)

            '为查询参数赋值
            tmpParas(0).Value = tmpCls.GroupId

            '执行更新查询(插入、修改、删除)
            tmpReturn = tmpDbAccess.UpdateRecord(tmpSql, tmpParas)

            '关闭数据库
            tmpDbAccess.DbClose()

        Catch ex As OleDb.OleDbException

            mErrorNumber = ex.ErrorCode
            mErrorMessage = ex.Message
            mErrorCreater = "ClsTVoucherGroupDbAccess - InsertGroup"

        End Try

        Return tmpReturn

    End Function