Using the following
If GeBrowse.DownloadString("URL GOES HERE").Contains("CHECKS FOR TEXT HERE.") Then
Something goes here
If there is no apparent internet connection, how would i create an error handling Message box or something of the sort?
I want to handle errors that might occur when user tries to connect to database. I don't know how to do that.This is my connection string used all over the program:
Using connection As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + txtFilePath.Text + ";Jet OLEDB:Database Password=" + txtFilePassword.Text + ";")
There are a few errors that i faced them myself:
[code].....
Sometimes when my server is down or busy, I get an error saying "connection timeout" while connecting to MySQL. But with the error the program also crashes. My question is how can I prevent crashing, it would be better to show a msgbox when this happens. (visual basic 2010)here is a screenshot of the error
I use this,
Dim connStr As String = "Database=mydatabase;" & _
"Data Source=datasrc;" & _
[code].....
I've added a database to my application with 2 fields:"ip" address and "started" that holds the number the application was started from that specific IP.I want to upload the database to my site hosted at google.sites. When the program is started it should make a connection with the following cases:
1-no connection with the database (possible no internet available) - it should display an error message
2-there is connection, the IP is not stored on the database, it addes the IP to the database and the field "started" with the value 1
3-there is connection, the IP is stored on the database, it increments the field "started" by 1
Is there a way to register VB2010 express without an internet connection? My days are diminishing!
View 9 RepliesHow to make program cuts Internet connection without appearing in the taskbar,I used the following methods, but did not succeed
1. shell("net stop dhcp") appear in taskbar
2. shell("ipconfig /release") appear in taskbar
From my input box, if cancel is clicked, I want to exit the sub. Here is my input box, but how do I create an if..then to find out if Cancel was clicked and then stop running the macro?
myLPS = InputBox(msg, title, vbOKCancel)
Second thing, I have a message box that asks if the user wants to continue with Yes & No buttons. But, if I click No, it just keeps executing. I want it to execute from the end of an if..then if No is clicked. Here is the function called and my if..then:
If CheckOK(MLSName) = vbNo Then GoTo ClickNo ' this is at the end of this big if statement - ClickNo:
Public Function CheckOK(MLS As String) As VbMsgBoxResultDim message As StringDim title As Stringmessage = "Create Task for: " & MLS & "?"title = "Continue..."Result = MsgBox(message, vbYesNo, tite)End Function
here is the exception error System.IndexOutOfRangeException i want a msgbox saying device not detected
View 2 RepliesI used the following code(with bug):
Code:
For n = 0 To 100
If saveLine(n).Substring(0, 8) = "heading:" Then
cboSelect.Items.Add(saveLine(n).Substring(8))
End If
Next n
The For loop only ran 5 times. It turned out that saveline(5) was shorter then 8 characters, so I changed the code which solved the problem:
Code:
For n = 0 To 100
If saveLine(n).Length > 8 Then
[code]....
VB 2010 neatly exits the for loop when the bug occurs. In this case it was easy for me to pick up the bug, because the combo box was not properly populated. What if it was not obvious that the for loop did not complete? It is quite scary to think that bugs like this are not displayed at run time.
I am trying to add some error handling for AppActivate if any error occurs.I initially tried using a try statement and cancelling the sub that calls the function where my AppActivate code is, but that didn't work.I have tried looping it, changing values and everything I know. I have Googled and nothing :S
Here is my I have removed all the error handling I tried to implement, however, this commented msgbox I would like to be included (that is, possible to execute) in any methods you present.
[Code]...
I was just wondering if it is considered overkill to add:
[code]...
To every sub in your project. And what would be the side effects of this if any.
I have a form within which has a webbrowser control. The site i view in the webbrowser control requires me to log in so i have made a one click login button which when clicked logs me in automatically. When i'm in the backend of the website, if i click on a certain button it pops up a new window that i need to make a selection from. But when this window pops up it asks me to log in again?Is it possible to catch all pop up windows so they are loaded in another form which also includes this 1 click log in to save the hassel of logging in manually again?
View 4 RepliesIn the Catch of Try-Catch there are the following two properties:
e.Exception.Message.Count()
e.Exception.Message
Does the .Count mean there are multiple lines in .Message? If not, what is the .Count used for?
I Want to develop a software like Yed.i just don know where to start.how we can create a workspace where i can drag and drop icons and create connection etc etc.
View 6 RepliesI successfully coded MyApplication_Startup and MyApplication_StartupNextInstance to give my single-instance application access to the command line. It works fine. if the application is not running and the user double clicks on a filetype associated with my application, my application starts up and reads in the file that was double clicked on. That's fine.
However, when the user double clicks on another file (same associated type) when the application is already running, I then (and only then) get a warning (from McAfee in my case) that my application is requesting access to the internet. I simply click OK to allow access, McAfee goes away, focus shifts to the original instance, and that instance successfully reads in the second file.
If the user then double clicks on a third file when the application is already running, focus shifts to the running application, it loads the third file, and the internet access warning DOES NOT appear. Same with all subsequent cases.
Any ideas about why the sudden internet access warning is occuring? In all the startup and load events, I do not do any internet related things. Much later, the program will send an email, but that code is far removed from Startup and Load things.My only idea is that perhaps because I have "awakened" the normally hidden ApplcationEvents.vb file (by putting some code in there), maybe I have triggered some sort of handling of the MyApplication_NetworkAvaialabilityChanged event, even though I make no reference to this event anywhere.
Before I added the command line handling stuff, I noticed that the internet access warning would occur only once for each new build. Susequent execution of the same build would not trigger an internet access warning. So now it is as if the handling of the StartupNextInstance event is simulating starting up a new build for the first time. Weird.
One more thing. I am not deploying this over a network. I am making a simple .exe by selecting Build from the MVS 2008 menu, then running the .exe by double clicking on it from Windows Explorer. I am using Visual Basic 2008 Express on Windows XP.
When converting the project from VB6 to VB.net. (All links to this classes were deleted: Microsoft.VisualBasic.Compatibility¸ Microsoft.VisualBasic Import System System.Data System.Windows.Form, using Framework 2.0)
I have this errors: Error 1 "MsgBox" not declared. It may not be available due to its protection level....RFrm.vb 1481 9 R
Error 2 "MsgBox" not declared. It may not be available due to its protection level. ...RFrm.vb 1481 135 R
Private Sub _Command4_0Microsoft.VisualBasic.Left_Click(ByVal sender As System.Object,_ByVal e As System.EventArgs) Handles _Command4_0.Click
[CODE]...
And another question, off-topic. Which operators can be replaced with VB.net operators: IsNumeric, Mid, Microsoft.VisualBasic.Left.
The function checks for the input only the digits.
With Text9
If .Text <> "-" And Not IsNumeric(.Text) Then .Text =_
Microsoft.VisualBasic.Left(.Text, .SelectionStart - 1) &_
Mid(.Text, 1 + .SelectionStart)
End With
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.
How do you actually handle connection Timeout to the database.Given a scenario where you are processing data half way through and the database crashed . So your connection between the database and your application would be broken. Most likely throw an exception error if u handle exceptions.What are your suggestions or your preferred way of handling such scenarios.
[Code]...
I am using VB 2008 Express and have created an application that connects to a SQL database to populate a datagrid.The application is working properly on my computer but will not on others 'remote connection permissions' error.After some googleing I found that the express version is crippled to only work on local machines that use a database.If I purchase Visual Studio 2008 Standard Edition, import and rebuild my application, will my application be able to run properly on other PC's?
View 7 RepliesI need to check whether If the Internet Connection Is available or not
If My.Computer.Network.IsAvailable = True Then
Return My.Computer.Network.Ping("8.8.8.8")
Else
Return False
End If
Above code returns Whether the PC connected to the internet, But I can't Check It through out the Software, I am only Having Single Form.
You know in windows, it says your connection speed down in the toolbar. How can I find this programmaticaly in vb.net?
Here is my code to get internet connectivity
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]......
Im trying to check my internet connection using just a button how do i do that?
View 2 RepliesWhat is the best practice way of detecting internet connection?
From Windows Vista onwards, a status is set in windows that is displayed in the task bar. However, I cannot call this function/api/whatever, since some of the client pc's are still on xp, and only due for upgrade in 18 months.
so do i use and request something like [url]... to try and see it it works, and on the catch block set the return value to false, or is there another way?
Second part of this question, If no network connection is available, I can use [url]... to dial a connection. Will this use internet explorer's settings, or dial the connection marked as default in DUN?
Public Sub Life(ByVal AnyEvent As Object) Dim myNewLife As New Life Dim Happiness As New Collection Happiness.Add(AnyEvent) myNewLife.Experience(Happiness) End Sub
In MC65, SIM card is already inserted. Any web site can be browsed.
In my application, there is sending email feature using Rebex. Sometimes, it cannot send email. So I tried to browse IE and I'm beware if 3G connection signal appears, sending works properly.
Around connection signal on Screen, there is "H" symbol. What is it?
For my case, it's not good to switch 3G connection by browsing IE. how to handle it.
I'm being able to connect to mysql database in localhost. But not able to connect in my server?
View 1 RepliesYou know how programs have help files? I really want to make a help file for the internet browser I'm making.
View 2 RepliesTo create a program that asks for input then uses an else statement to create a handling fee balance.
Input: sales record - first name, last name, purchase amount, balance before purchase
Output: report - full name, old balance, purchase amount, handling fee, new balance
Definitions: handling fee is 5% of the old balance if the old balance is less than $1000.00 else it is 2% new balance = old balance + purchase + handling fee
Processing:
Ask for and receive sales information
Calculate new balance
Print output report
End the program when a purchase amount of 9999.99 is entered
I'm writing a Silverlight 4 application and would like to check when opening the installed out of browser application, whether there is a valid internet connection (to then download some data from my website). I realise that I could put a try catch around a WebRequest but that seems a bit hacky to me.
EDIT: What I meant by valid internet connection is just connected to the internet
is there a way I can proxify my application's connection to the internet??
I want it to be able to select a random proxy from a list of proxy IP address in a text file.
I just can't seem to establish a connection between my two P2P applications over the internet(LAN works perfectly fine).
I have tried the following.
- Disabling Firewall
- Changing Port
The only way I can establish a connection is if I'm connecting to the same computer using the universal IP or the local. Does anyone have a fix for this? Oh and here is the error that I receive when trying to connect over the internet:
System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 255.255.255.255:8787
at System.Net.Sockets.TcpClient..ctor(String hostname, Int32 port)
at P2P_Client.Form1.Msgtxt_KeyDown(Object sender, KeyEventArgs e) in C:\Users\Administrator\Documents\Visual Studio 2008\VB Projects\P2P-Client\P2P-Client\Form1.vb:line 32
