Windows - Close A .NET Application That Is Accessed By Multiple PC On The Same Connection?
Jun 7, 2012
I have an application that I made in VB.NET. I put it in the server on my office and every other user access it via network connection. I only mapped the drive onto their computer and then I cope the shortcut to the application. can I close all the application that is running with a single code? I sometime need to close all the application first before I can do anything with the application (for example, modifying the report etc.). My current method is still the manual one, which is calling everyone to close their application or running all over the place closing the application myself.
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Aug 30, 2009
how to use windows calculator in vb.net 2008?
use System.Diagnostic.Process.Start(calc)
its working but i want when application close it also close this calculator how?
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Dec 22, 2011
Should I open a connection to MySQL at the load of my application and close it when you exit or should I open and close the connection only when I need to run queries?
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Jul 7, 2009
For now i have not finished my code and as i am still really playing with .net to learn the different functions how can i close the windows application down after the ok only message box has been clicked? here is the code so far:
[Code]...
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Nov 30, 2008
i make a class and when i call on form then that error occurs "ExecuteNonQuery requires an open and available connection, the connection Current stat is close "
Class Code isImports System.Data.SqlClientImports System.DataImports System.StringPublic Class DatabaseKits Dim Cn As New SqlClient.SqlConnection Public Function BuildConnection() As Boolean Try Cn.ConnectionString = "Persist Security Info=False;Integrated Security=True;Trusted_Connection=Yes;database=BizAimsPro2008;server=Server-2k3s" BuildConnection =
[code]....
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Nov 21, 2009
I'm starting using a project for smart device in windows CE 5. I'm using visual basic of v. studio 2008.I need to create a dynamic connection between a PDA (codebar lector) and an server with ORACLE 9i. The PDA connected via WIFI. But in my vb project I don't find OLEDB or ODBC elements.
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Apr 29, 2011
I am in vb.net and have a function that will be accessed by multiple threads. Everything inside the function uses local variables. However, each thread will pass in its own dataset by reference. From what I have read the local variables should be no problem, but I think the dataset coming in is a concern. How should I control access / execution of this function to make sure that it is thread safe?
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Sep 20, 2010
I'm using vs2010 and can't get this to work. The same code has worked in earlier versions. What has changed?
config file:
<appSettings>
<add key="ConnectionString" value="Data Source=MikeLaptop;Initial Catalog=AdventureWorksDW2008R2;Integrated Security=True"/>
</appSettings>
Code:
Dim strProvider As String = ConfigurationManager.AppSettings("ConnectionString")
strProvider is always = nothing
How to do this now?
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May 12, 2010
I have two Close() functions in same class as below:
[Code]...
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Sep 7, 2009
I'm try to make a multiple form as like as navigation form. There are several form(MainForm, Form1,Form2,....and Next Form)in the MainForm i'm put a "ADD" button, when i click on the add button Form1 is show up. On the Form1 there are 3 button (Back,Next,and Cancel) when i'm click Next Button on the Form1 then Form2 is show up and the same way to next button / back button
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Jan 11, 2011
i am using vb.net(2008) and MS access as my database.[CODE]...
now i want to insert into these tables. how can i do that? i know how to insert into a single table for example listed below, so how can i modify that so that i can insert into multiple tables[CODE]...
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Nov 29, 2009
It seems like whenever i click my close button the application will close but the debugger is still in active.How to exit this debugger? :)
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Feb 12, 2011
sometimes, when I use Form.close() when debugging my program, although the form is closed, the application is still running. I noticed this behaviour when using the msgbox function.
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Jul 30, 2009
I am making a server - multiple client windows form application using Visual Basic Express 2005.
I was wondering if there was a way that I could debug multiple instances of the client at the same time?Ashray Lavsi If my post answers your Question, don't forget to "Mark it as Answer"
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Jun 10, 2010
I am trying to login with this code which is working alright but the problem is anytime i make a mistake in trying to login with a wrong password is gives me an exception that the connection was not close but it is open i have try to fix it but to no avail. [code]
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Feb 4, 2009
As I watch in MySql Admin connections to server, I see the connection get made but it never disconnects. Is this different from VB6?
Private Sub WorkerThread1_EnterEvent(ByVal sender As System.Object, ByVal e As AxVBVoiceLib._WorkerThreadEvents_EnterEvent) Handles WorkerThread1.EnterEvent
Dim conn As ADODB.Connection
[Code].....
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Nov 2, 2009
I used code below to close connection, is it right?
Try
myConn.Open()
mySQLCommand.ExecuteNonQuery()
Catch ex As Exception
'code to display error message
Finally
[Code]...
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Dec 23, 2009
I created a connection to a Microsoft Access database by using the wizard. Now in the server connections I see my data connection to the db. I'm trying to create a method to compact the database, so I used JRO to do it. To do it however, an exclusive access is required, and when I try to call the method I get an exception.
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Aug 13, 2011
In my program I got multiple spots where I open a Connection to an Oracle database, read some lines via a stored procedure which returns me a cursor, put them in an IDataReader, close the connection and go on.
Now everything works fine till the point of closing the connection. I've watched the connections opened to the database via TOAD for Oracle and I figured out, that the database seems to keep an connection opened after I said m_Connection.Close and m_Connection.Dispose.
I use Oracle.DataAccess and get an error after a short time, that there are to many connections. I debuged my session and made sure, that vb performs the close() command and it does it, but the database not.
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Dec 16, 2011
SQL connections confuse me sometimes In almost every SQL related code on the internet the routine is like this;
* Open connection
* Execute SQL command
* Close connection
Is it good practice to just open a connection when the application starts and use that connection until the application closes?I know that sequential connections are required when processing more queries, but what if I need to poll a certain Table every x seconds? Isn't is better to keep that single connection open for as long as the application is running (and re-open when a failure occurs) instead of opening a new connection every x seconds?
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Sep 29, 2010
I have an SQl Connection: Con
con.close
after I close the connection I cannot copy the Sql Express Db because it is still in use but I have CLOSED the connection.
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Mar 4, 2009
everytime i try to delete this file it says there is a connection open and it can't close. i think i've narrowed it down to my crystal report, but i can't get it close the connection.
[Code]...
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Apr 26, 2012
I want to know what is the right way to close my Database connection while its open.
This is how i open my connection.[code..]
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Apr 11, 2012
Can anyone tell me how I close an opened SQL connection inside a Function?
I call a Select Function like this:
[Code]...
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Feb 10, 2010
How do I close a connection of strongly typed dataset? I want to backup my database with a zip technique. But I can't access it when my program is open. I've closed connections of all table adapters but it didn't work.
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Nov 24, 2011
I have the following code in my Server Form:
Imports System.Net, System.Net.Sockets
Public Class ServerForm
Private serverSocket As Socket
Private clientSocket As Socket
[code]....
for the first time, when I click on Connect, it is going to connect to server as well and also it works if you click on the disconnect. for the second time if you click on the Connect button, it gets connected but the disconnect button is not working.
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Nov 1, 2009
How do i make it so when i close my client the server will restart listening and allow another client to connect.
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Oct 14, 2011
I am performing a simple exercise of opening an SQL Server database connection, pulling the first record of a table from a DataReader object, and then closing the object. However, I have noticed that theres bit of a delay, about 5 seconds or so, in closing the connection. However, the delay only occurs after the command object executes the specified query. I've worked in a setup like this before and don't remember there being such a long delay while closing the connection. [Code] The connection closes almost immediately. What gives? I have narrowed it down to the where the .ExecuteReader line that causes the delay in the connection close. Whats causing the delay and how do I resolve it?
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Apr 21, 2009
When using SQL connections in my program, will I have to open and close the connection and the data reader each time I want to access the database ?
[code]...
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Apr 9, 2010
I have the requirement to create an application that has multiple front ends developed using Windows Forms, WPF, ASP and Compact Framework Mobile Forms.I would like to be able to create a series of obejct representing the business logic and have this logic accessible from the various front ends available. My first thought was to use remoting as I'd like to be able to pass the business objects back and forth between client and server but the compact framework doesn't support remoting and also transferring a full framework business object to a compact framework business object doesn't seem possible.My next thought was to use web services but again the passing of business objects seems to be very hard to accomplish. Without doing this I would have to create individual web methods for each business operation.
Finally my next option is to use sockets and write the whole client/server logic within some classes and expose them to the UI/Business layer. My only problem with this is it is not scaleable should the number of clients increase dramatically whereas using remoting or web services I can host the solution via ASP.Net.Does anybody have an ideas on the best way forward for this or even have any input on how they would write an application that required a windows form, wpf, asp website and mobile device GUI all of which want to use the same business logic?
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