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Downloading and Uploading Files
An exciting feature for any programmer these days is the ability to interact with the Internet. At least once a week, I get email from people who want to upload and download files using FTP. You can labor tediously and write your own FTP client, or you can use the My feature’s My.Computer.Network namespace and move files across the Internet with just a few lines of code (see Listing 8).
Listing 8 Download a file from the Internet using ftp:// and check for a successful result.
Sub UploadAndDownloadFile()
Const filename As String = "c:\temp\welcome.txt"
Try
If (My.Computer.FileSystem.FileExists(filename)) Then
My.Computer.FileSystem.DeleteFile(filename)
End If
My.Computer.Network.DownloadFile( _
"ftp://ftp.softconcepts.com/Welcome.txt", "c:\temp\welcome.txt")
If (My.Computer.FileSystem.FileExists("c:\temp\welcome.txt")) Then
Console.WriteLine("File downloaded successfully")
Else
Console.WriteLine("Something went wrong")
End If
Catch ex As Exception
Console.WriteLine(ex.Message)
End Try
Console.ReadLine()
End Sub