VB.NET 数据库查询 [SQL字符串的生成]

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---------SQL生成----------
任务是当用户以逗号来分隔查询的条件,的多条件查询,使用IN(x,y),但是当在数据库(ACCESS)对应的字段是字符型是就会出现错误,那是当然的!如果是IN('x','y')就没有问题!
下面的代码就是对字符串的操作,返回 'x','y'。

'-----接受要处理的字符串-------
    Function Tool_disTest(ByVal TextBefore As String)
        Dim TextAfter() As String
        Dim intNum, intTextLen, k, i As Integer
        intNum = 1
        intTextLen = Len(TextBefore)
        '--------计算有多少的查询条件--------
        For i = 1 To intTextLen
            If Mid(TextBefore, i, 1) = "," Then
                intNum = intNum + 1
            End If
        Next
        '-----------------------------------
        ReDim TextAfter(intNum)
        k = 1
        '--------把每个条件放到数组里---------
        For i = 1 To intTextLen
            If Mid(TextBefore, i, 1) = "," Then
                k += 1
            Else
                TextAfter(k) = TextAfter(k) & Mid(TextBefore, i, 1)
            End If
        Next
        '----------------------
        Dim strTemp As String
        '--------为每一个条件加上''----------
        For i = 1 To intNum
            strTemp = TextAfter(i)
            TextAfter(i) = "'" & strTemp & "'"
        Next
        '----------------------
        strTemp = ""
        '------添加分隔条件用的","------
        For i = 1 To intNum
            strTemp = strTemp & TextAfter(i) & ","
        Next
        '------------------
        '------去除最后一个,------
        strTemp = Mid(strTemp, 1, Len(strTemp) - 1)
        '-------------------
        Return strTemp
    End Function

最后在SQLServer中又试了试,发现SQLServer查询的时候用IN(x,y)来查询字符型是OK的,(SQLServer就是比ACCESS强点,呵呵)
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