Help me Return a String from a Function - Xtreme Visual Basic Talk

06-27-2012, 06:42 AM

neo_matrix neo_matrix is offline

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Join Date: Mar 2009

Posts: 31

Help me Return a String from a Function

Hi all!

I am working on this problem 4 hours now an i cant figure the right way out!

I have a class in this class i call a function which should return some string

the class connects to an ftp server and list the directory and returns the filenames of the dir.

Code:

Public Function GetFileList(ByVal host As String, ByVal username As String, ByVal password As String, ByVal currentdirectory As String) As List(Of String)
        Dim oFTP As FtpWebRequest = CType(FtpWebRequest.Create(host & currentdirectory), FtpWebRequest)
        oFTP.Credentials = New NetworkCredential(username, password)
        oFTP.KeepAlive = True
        oFTP.Method = WebRequestMethods.Ftp.ListDirectory
        Dim response As FtpWebResponse = CType(oFTP.GetResponse, FtpWebResponse)
        Dim sr As StreamReader = New StreamReader(response.GetResponseStream)
        Dim str As String = sr.ReadLine
        Dim oList As New List(Of String)
        While str IsNot Nothing
            If str.StartsWith(Data) Then
                oList.Add(str)
            End If
            str = sr.ReadLine
        End While
 

        sr.Close()
        response.Close()
        oFTP = Nothing
        Return oList
    End Function

so this should return all filenames of that directory

like:

Data1.xml

Data2.xml

Data3.xml

Now i have a form with a listview where i want to call this function and get the files of the "olist"

Code:

Return oList

HOW CAN I DO THAT?!?! i mean how would my sub look like on my form where i want to call that function?

06-27-2012, 07:48 AM

AtmaWeapon

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I'm confused. Are you asking how to call a function?

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06-27-2012, 07:49 AM

PlausiblyDamp

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You would need to create an instance of the class that contains this function and then call this function via that class instance, e.g. if that function was in a class called FTPUtils you would do something like

Code:

Dim ftp as new FtpUtils()
Dim files as List(Of String) = ftp.GetFileList(<need to insert the appropriate parameter values here)

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