[2005] Searching File Directory

Hey,
I have a piece of code which seems to do an exact search. I have tried to change it so that it retrieves all files that have some part of the search topic in their name. So if i search by "Hello" I would receive a file called and "Hello", "Hello World" and also "Everybody say Hello". Can anyone help me change my search to do this apposed to just lloking for an exact phrase? My current code is;

Code:

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Private Sub SearchForFiles(ByVal StartDir As String)
        Dim DirPath As String = Path.GetDirectoryName(StartDir)
        Dim FilePattern As String = Path.GetFileName(StartDir)
        FilePattern = "*" & FilePattern & "*"
        Dim TotalFiles As Integer = 0
        lstResults.Items.Clear()
        If Directory.Exists(DirPath) Then
            Dim di As New DirectoryInfo(DirPath)
            Dim fi() As FileInfo = di.GetFiles(FilePattern, SearchOption.AllDirectories)
            For Each f As FileInfo In fi
                lstResults.Items.Add(f.FullName)
                TotalFiles += 1
            Next
        Else
            lstResults.Items.Add("Invalid Start Directory")
        End If
        lstResults.Items.Add("Total Files = " & TotalFiles.ToString())
    End Sub


    Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Clic
        txtSearch.Text = "C:\Hello\" & txtSearch.Text & ".*"
        SearchForFiles(txtSearch.Text.Trim())
    End Sub

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Is this what you are looking for?

sStartDirectory = the top directory to search
sSearchString = the string that you wish to find in the full path

If you want the search string to appear only in the file name, it will have to be amended further.

It returns an array of file paths which contain the search string.

Code:

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Imports System.IO
 Private Function GetFilesContainingSearchString(ByVal sStartDirectory As String, _
            ByVal sSearchString As String) As String()

        Dim sAllFiles() As String = Directory.GetFiles(sStartDirectory, "*.*", SearchOption.AllDirectories)
        Dim sReturn() As String
        Dim iUBound As Integer

        Dim i As Integer

        For i = 0 To sAllFiles.GetUpperBound(0)

            If Strings.InStr(sAllFiles(i), sSearchString) > 0 Then
                ReDim Preserve sReturn(iUBound)
                sReturn(iUBound) = sAllFiles(i)
                iUBound += 1
            End If

        Next

        Return sReturn

    End Function

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I havekind of inherited my code from a previous employee and been tasked to do this? Woud I need call to only your function? Or would I still use my existing code and then call the function at some point?

Are you searching the full file path or just the file name? I have amended the code to search for the file name only and also I have made sure that the search is not case sensitive. You could implement it like this:

Code:

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Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
      Dim sArray() As String = GetFileNamesContainingSearchString("C:\Hello\", "Hello")
        Dim i, iUBound As Integer

        If IsNothing(sArray) = True Then

            lstResults.Items.Add("Total Files = 0")

        Else

            iUBound = sArray.GetUpperBound(0)

            For i = 0 To iUBound
                lstResults.Items.Add(sArray(i))
            Next

            lstResults.Items.Add("Total Files = " & (iUBound + 1).ToString())

        End If
    End Sub

  Private Function GetFileNamesContainingSearchString(ByVal sStartDirectory As String, _
            ByVal sSearchString As String) As String()

        Dim sAllFiles() As String = Directory.GetFiles(sStartDirectory, "*.*", SearchOption.AllDirectories)
        Dim sReturn() As String
        Dim iUBound As Integer

        Dim i As Integer

        For i = 0 To sAllFiles.GetUpperBound(0)

            Dim sFileName As String = GetFileName(sAllFiles(i))

            If Strings.InStr(sFileName.ToLower, sSearchString.ToLower) > 0 Then
                ReDim Preserve sReturn(iUBound)
                sReturn(iUBound) = sFileName
                iUBound += 1
            End If

        Next

        Return sReturn

    End Function

    Private Function GetFileName(ByVal sFilePath As String) As String
        'pass the full file path and returns the file name
        Dim iLastSlashPos As Integer
        Dim i As Integer
        Dim iLenFilePath As Integer

        iLenFilePath = sFilePath.Length

        For i = 1 To iLenFilePath

            If Strings.Mid(sFilePath, i, 1) = "\" Then
                iLastSlashPos = i
            End If

        Next i

        Return Strings.Right(sFilePath, iLenFilePath - iLastSlashPos)

    End Function

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Excellent!! Works Like A Treat!!