Solved

Get Connection Status

Posted on 2014-11-26
7
67 Views
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
         response.Close()
      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

0
Comment
Question by:Ray Turner
7 Comments
 
LVL 33

Expert Comment

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

Open in new window

0
 
LVL 1

Expert Comment

by:cstaff16
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()
{
    try
    {
        using (var client = new WebClient())
        using (var stream = client.OpenRead("http://www.google.com"))
        {
            return true;
        }
    }
    catch
    {
        return false;
    }
}
0
 
LVL 1

Expert Comment

by:cstaff16
ID: 40467078
Sorry, here is vb.net version :).

Public Shared Function CheckForInternetConnection() As Boolean
      Try
            Using client = New WebClient()
                  Using stream = client.OpenRead("http://www.google.com")
                        Return True
                  End Using
            End Using
      Catch
            Return False
      End Try
End Function
0
Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 

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?
0
 
LVL 75

Accepted Solution

by:
käµfm³d   👽 earned 500 total points
ID: 40467496
Catch the WebExceptions that GetRequestStream and GetResponse could throw.
0
 

Author Closing Comment

by:Ray Turner
ID: 40469955
Thanks!
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

A long time ago (May 2011), I have written an article showing you how to create a DLL using Visual Studio 2005 to be hosted in SQL Server 2005. That was valid at that time and it is still valid if you are still using these versions. You can still re…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
When you create an app prototype with Adobe XD, you can insert system screens -- sharing or Control Center, for example -- with just a few clicks. This video shows you how. You can take the full course on Experts Exchange at http://bit.ly/XDcourse.
This tutorial demonstrates a quick way of adding group price to multiple Magento products.

947 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

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now