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Compare list of numbers against directory list of file names

Posted on 2008-06-16
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Last Modified: 2013-12-16
This is a VB.NET/C# progamming question.
Given a list of numbers from a table column and a network folder directory list of file names, we need to do the following:
1) Code to retrieve and store the list of numbers from the table column.
2) Code to retrive and store network folder directory list of file names.
3) Code to compare list of numbers against directory list of file names and place in a list numbers that are not contained in any file name. For example:  123456 is contained in 12345.txt
Thanks for any help.
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Question by:ksfok
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vbturbo earned 2000 total points
ID: 21832333
Well

There many ways to address this , also more effecient as show below but it should get you started



Imports System.Data


    Dim con As New OleDb.OleDbConnection
    Dim ds As DataSet
    Dim da As OleDb.OleDbDataAdapter
    Dim sql As String


     'Get some file names from a database
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        con.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = C:\Test.mdb"
        sql = "SELECT * FROM FileNames"
        con.Open()

        da = New OleDb.OleDbDataAdapter(sql, con)
        ds = New DataSet("FileNames")
        da.Fill(ds, "FileNames")

        con.Close()

       CompareFiles()

    End Sub



   Private Sub CompareFiles()

      'Select a folder from a drive

        Dim mydir As String = "C:\temp"

       'Add the content to a list

        Dim list As New List(Of System.IO.FileInfo)
        list.AddRange(New IO.DirectoryInfo(mydir).GetFiles("*.txt"))

      'Do a compare

        For Each myfile As System.IO.FileInfo In list
            Debug.WriteLine(myfile.Name)                                        'table attribute
            Dim rows() As DataRow = ds.Tables("FileNames").Select("fNames=' & myfile.Name& "'")

            'Show the no.matches
            MessageBox.Show(rows.Length)
        Next

    End Sub


hope this helps a bit

vbturbo
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