Easy Way To Detect Internet Connectivity?
Oct 28, 2009
I saw another forum which discussed how to detect whether a LAN was connected, but I need to know whether my Internet connection from my ISP is up or not (I'm writing a program for day trading, so knowing if my internet connection is down is critical). I know I can simply open a browser in VB and browse to a site and see if it doesn't come back "page not found", but that involves a fair amount of overhead, and if the internet is down, it often takes many seconds to a minute to come back with "page not found". Is there some simple command that will quickly tell me that my internet connection is working? I'm using VB in VS 2008, and currently using XP although I plan to convert to Windows 7 in the next couple months.
View 3 Replies
ADVERTISEMENT
Aug 6, 2009
How can I check for internet connectivity? I can't use the My.Computer.Network.IsAvailable, because that one returns true also when you only have a local network connection and no internet connection.
View 10 Replies
Mar 27, 2010
Checking the Internet Connectivity?[URL]
View 1 Replies
Jul 18, 2009
ade an application and it uses internet to connect to my private server database and send email sometimes.. and its working great until now that I noticed e bug in it When im not connected in internet and working with my application and then my application tries to send email or connect to my server database I got my application crashed so what I want to do is to make my application first detect if it has internet connectivity and then to connect to my server or send any mai
View 8 Replies
Feb 1, 2009
"Hey ProgrammingKing, How do I add a feature to my program that shows my Internet Connectivity Status that changes when the Status changes?"
Well, It's really simple, All you do is add 1 timer and 1 label.
Heres the code :
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
If My.Computer.Network.IsAvailable Then
[Code].....
View 9 Replies
Jan 10, 2012
I need my application to check for internet connectivity on my user's computer. If there is, an image is displayed and if there isn't, a different image is displayed. Here's the code I used to get this to work:
Private Sub Window_Loaded(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles MyBase.Loaded
If NetworkInformation.NetworkInterface.GetIsNetworkAvailable Then
Dim bi1 As New BitmapImage
[code]....
I decided to test this on my own computer by changing my default gateway (thereby making it seem as if I lost connection). But I realized that the code still showed that I was connected. So I'm thinking that it's only checking for connectivity of the interface - which in this case, is my connection to the router (which is true, I was connected to the router).How do I check that the user's PC is actually connected to the internet? I read the article Check for Internet connectivity but it's in C# and I don't understand that.
View 1 Replies
Oct 25, 2009
i made an application and it uses internet to connect to my private server database and send email sometimes.. and its working great until now that I noticed e bug in it When im not connected in internet and working with my application and then my application tries to send email or connect to my server database I got my application crashed so what I want to do is to make my application first detect if it has internet connectivity and then to connect to my server or send any mail to be more specific i want to make a loop to check for internet connectivity all the time and in that moment that im not connected to internet to stop trying to connect to my server...
View 14 Replies
Dec 24, 2009
Ran across a snippet a while back but can't seem to find it again. Was very short and simple and detected all versions using version major and minor.
View 4 Replies
Feb 28, 2009
I am trying to verify connectivity from my application to various servers - For now I am only concerned with mail servers... (later SQL etc)Before anyone gets all upset and thinking this is for SPAM - wrong - these are to confirm connectivity from the application for sending logs OR to ensure the SQL conneciton is working appropriately - Those that want to SPAM can do this simply by getting LINUX and doing it for free with ANY mail client (I add this ONLY because MOST SMTP threads go unanswered... which is silly... there are MANY good reasons to work with mail within an application.....)So what I have tried is opening a telnet session, grabbing the output, and going from there...But it is not working.... the output contains nothing specific to the telnet session I initiate - and.... of course from the command prompt manually i DO get the proper responses
[code]...
I get the command prompt header, I see the commands... I see the prompts... but after the telnet command there is nothing I am assuming there is an issue redirecting telnet info and the telnet session terminates the second I try to read the data
View 3 Replies
Dec 22, 2009
The string is coming from this [url]...
View 2 Replies
Jan 31, 2011
I've been looking for a way to do this for like two days now, and no luck.
What I want to do is get into the temporary internet files, find a certain file....
(^^^ I can do that just fine (using specialfolders, etc) ^^^)
and get the internet address associated with it.
See the attachment if you don't get my meaning.
View 1 Replies
Oct 15, 2011
we have our system running but our system needs to be modified because we did something wrong...we are doing an "Internet monitoring System" in our school library where the user can only access the internet 1hr a day, and he/she cannot use the internet within that day if he couldn't buy a time on a serve...every students should only have 20hrs time usage per semester...our problem is every day their 20hrs is being reduced in 1hr.. the rule is the time per semester which is 20hrs that is given to the students was reduced 1hr only if he uses the internet..but our system is reducing their 1hr every day.
View 1 Replies
Nov 6, 2009
Dim con As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=F:\dotnet\lstbox1\db1.mdb;Jet OLEDB:Database Password=")
if i connect without setting database password then it connects easily. if i set password then it says file cannot connect.Is there any other method for entering password without writing password into the connection string?
View 5 Replies
Jan 3, 2012
I need to verify that my app can connect to the default C$ share on a remote server on the network. [code]...
View 1 Replies
Jul 4, 2011
connectivity between VB.Net 2005 and MS-access 2007 ?
View 1 Replies
Jun 6, 2009
Make Custom Msgbox Button In the Visual Basic 6.0. I dont know how to create user defined butten "Custom Button For Msgbox.
[Code]..
View 2 Replies
Jan 23, 2012
I am communicating with a USB-HID device. It will successfully complete hundreds of send-receive requests but occasionally get a Null Exception error.
[Code]...
at the rxData.dataPacket(i) = element I will get a NullReference error every now and then. I could enclose it in a try/catch statement, but I'd like to fix the root problem if possible.This device is communicating to microcontrollers, and it is possible that they won't always give a value... but my feeling is this is some sort of UI threading issue. When debugging, even though there is a null exception, many times there actually does seem to be data in dataReceived.data.ToList(). Is there an easy way to place the whole data processing routine on a thread separate from the UI?Edit: Changed code to match answer and give more info on where it is used. Still get NullReferenceExceptions after about 1,000 completed send/receive requests to the HID device.
View 2 Replies
Oct 1, 2009
Code for database connectivity using vb.net
View 1 Replies
Mar 2, 2009
i want to learn connectivity of vb.net 2005 and sql server 2005
View 5 Replies
Jul 6, 2009
connetvity vb.net with sql sever 2005
View 4 Replies
Sep 19, 2010
I was maked a application in visual studio 2008 using language vb & now i want to connect with database so plz mail the steps required for database connectivity using ms access or sql server.
View 1 Replies
Aug 9, 2010
i used the below coding to add the data in my database but its not getting updated,its just showing updated in data grid view but not in database
Dim newaddRow As teleDataSet.addRow
newaddRow = Me.TeleDataSet.add.NewaddRow()
newaddRow.name = "kumar"
[code].....
View 1 Replies
Jun 21, 2010
how i connect vb 2010 to ms access
View 1 Replies
Jan 26, 2012
i want database connectivity to access or sql
View 3 Replies
Oct 7, 2010
I want to connect my Desktop application (VB.Net) to my Database (SQL server 2005). The problem is my Database is in the other country.In my local network my application works fine.I am using IP address for connect database. for example : my IP addrees is 222.22.22.22.
View 1 Replies
Mar 4, 2010
I am using the following code to establish a database connection to my datagridview and Access database. Here I am giving my file path name to the connection. This code works fine only on my computer. To make this code run on another computer I need to change the database pathname in the code. Is there anyway I can make this connection dynamic so that I can make this program run on any computer
Dim Data1 As OleDbConnection = New OleDbConnection("Provider=Microsoft.jet.oledb.4.0;data source=C:\Users\Desktop\Work\Visual basic\alldata.mdb")
Dim Case1 As OleDbCommand = New OleDbCommand("SELECT * FROM case1", Data1)
[code]......
View 1 Replies
Sep 19, 2010
I have always wondered about this and seen this among lots of programmers. Why is a VB programmer or VB code easily dismissed as too noobish and easy while the same does not apply to Python or Python code? After all, isn't Python as easy as VB is? And it does provide drag-n-drop GUI application building also. So why is it that VB is flamed and yet Python is not?
View 1 Replies
Apr 15, 2012
I've been trying to play with DirectShow but it's getting on top of me and my question on here didn't answered so I'm thinking maybe I should go with a different approach. (DirectShow VB.net can't change recording format). <- Where as that 'works' I can't get it in the format I want it, and I don't really understand it so I'd obviousl like to go down the route of something I can get my head around.
I've googled till my fingers are raw trying to come up with an easy way to record video in my vb.net application, it doesn't have to be fancy, just a preview with a start record, stop record button, that's it.
View 2 Replies
Feb 14, 2010
iam very keen to learn vb.net 2008 so please suggest me how to access world most and best free of cost reading material available on net for reference.and free best book available for vb.net 2008 on the net. there is any complete source code available for consideration.
View 2 Replies
Jun 25, 2009
Lets say I have 30 text fields in a Frame on my form, and I want to set them all to disable (so users can't edit them).Is there an easy way to walk through those fields without having to create an array of text fields?
I.E., in ... VB 6, with an array of text fields, I can do something like this:
For i = 0 to 10
txtfield(x).enabled = true.
Next i
Is there something in VB.NET where I won't have to use an array of controls, something like this (assuming all txt fields are in a frame):
[Code]...
View 6 Replies
