Get Connection Status

Posted on 2014-11-26
Last Modified: 2014-11-27
How do you check connection status using .Net Framework 4.5?

Here's what I have:

Imports System.Net

Public Class FTPPlus2
   Shared Property HostName As String
   Shared Property Password As String
   Shared Property UserID As String
   Shared Property Target As String
   Shared Property ID As String
   Shared Property SiteName As String

   Shared Property request As FtpWebRequest
   Shared Property response As FtpWebResponse

   Shared Sub Disconnect()
      If response IsNot Nothing Then
      End If
   End Sub

   Shared Sub Connect()
      request = DirectCast(WebRequest.Create(String.Format("ftp://{0}", HostName)), FtpWebRequest)
   End Sub

   Shared Sub ChangeCurrentFolder(FolderName)

   End Sub

   Shared Function Connected As Boolean
      Dim ret As Boolean  = False

      Return ret
   End Function

   Shared Sub Login()
      request.Credentials = New NetworkCredential(UserID, Password)
   End Sub
End Class

Open in new window

Question by:Ray Turner
LVL 34

Expert Comment

by:Mike Eghtebas
ID: 40466990
If con.State = con.Open Then
	Connected  = true
	Connected  = false
End If

Open in new window


Expert Comment

ID: 40467072
Are you trying to determine if you can connect to the internet?
If so, you can do something like this.  I've used this in various apps and it works well.
You can use any url you want, but I just use google.

using the System.Net.WebClient

public static bool CheckForInternetConnection()
        using (var client = new WebClient())
        using (var stream = client.OpenRead(""))
            return true;
        return false;

Expert Comment

ID: 40467078
Sorry, here is version :).

Public Shared Function CheckForInternetConnection() As Boolean
            Using client = New WebClient()
                  Using stream = client.OpenRead("")
                        Return True
                  End Using
            End Using
            Return False
      End Try
End Function
Resolve Critical IT Incidents Fast

If your data, services or processes become compromised, your organization can suffer damage in just minutes and how fast you communicate during a major IT incident is everything. Learn how to immediately identify incidents & best practices to resolve them quickly and effectively.


Author Comment

by:Ray Turner
ID: 40467291
I'm trying to determine the status of the FtpWebRequest.  Is there a way to determine if the connection is open/successful?
LVL 75

Accepted Solution

käµfm³d   👽 earned 500 total points
ID: 40467496
Catch the WebExceptions that GetRequestStream and GetResponse could throw.

Author Closing Comment

by:Ray Turner
ID: 40469955

Featured Post

Active Directory Webinar

We all know we need to protect and secure our privileges, but where to start? Join Experts Exchange and ManageEngine on Tuesday, April 11, 2017 10:00 AM PDT to learn how to track and secure privileged users in Active Directory.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In my previous article ( we saw the basics of serialization and how types/objects can be serialized to Binary format. In this blog we wi…
More often than not, we developers are confronted with a need: a need to make some kind of magic happen via code. Whether it is for a client, for the boss, or for our own personal projects, the need must be satisfied. Most of the time, the Framework…
In an interesting question ( here at Experts Exchange, a member asked how to split a single image into multiple images. The primary usage for this is to place many photographs on a flatbed scanner…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below.…

821 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question