Disconnected And Connected Feature Of ADO.NET

May 19, 2010

I just read a book : Pro ADO.NET 2.0.It discuss about the disconnected and connected feature of the ADO.NET.In disconnected, the "data container" is DataSet.But it doesn't say anything about the data container if i use the connected feature. In ADO, we have recordset, what about ADO.NET.

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Changing ToolStripStatusLabel Text To Connected If Connected To A Network

Apr 4, 2011

On my program I am trying to make a ToolStripStatusLabel's text change to "connected" if connected to a network and if not connected to a network change the text to " Not Connected" then I don't know how to display a image if connected to a network or not connected. So if the computer is connected to a network I have a image that I would like to be displayed next to the ToolStripStatusLabel. And if not connected to a network, can the program display a different image? I tried this:

My.Computer.Network.IsAvailable=True(ToolStripStatusLabel2.Text "Connected")
My.Computer.Network.IsAvailable=False(ToolStripStatusLabel2.Text "Not Connected")

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Find Out If The Connection Of Sockets (TCPClient) Is Connected Or Not Connected

Nov 10, 2009

I am trying to find out if the connection of my sockets (TCPClient) is connected or not connected. I am using the following code:

[Code]...

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Go Last And Go First Code With The Disconnected Mode?

Jul 6, 2011

in the begining i cold the database (accdb 2007) (AGC)and the table(telp)

in form declaration
Dim cn As New OleDb.OleDbConnection Dim cmd As New OleDb.OleDbCommand Dim ad As New OleDb.OleDbDataAdapter Dim cmdb As New OleDbCommandBuilder Dim dbs As New DataSet

[code].....

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Handle When COM Object Is Disconnected From RCW?

Feb 15, 2012

Is there any way to run code when COM object is about to be disconnected from RCW without implementing IDisposale interface and explicit call MyObject.Dispose in client code?

The code below is not working. When program enters Finalize sub, ExcelApplication is already disconnected from RCW, and I get error. I understand why it happens, but I want to get a solution.

I want to make it working the following way: when last managed reference is released, code from Finalize sub is executed before COM object is disconnected.

My question is - is it possible at all and if it is then how can I handle this event inside the class, without need to call Finalize explicitly from outside?

Very simple class:

Public Class ExcelRunner
Dim ExcelApplication As Excel.Application
Public Sub New()

[Code]....

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VS 2005 : What Is A Disconnected Architecture In Dot Net

Dec 25, 2009

what is a disconnected architecture in dot net?Why are the dataSets a disconnected architectures in dot net?

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Why Does Vb Not Detect A Disconnected Socket

Apr 10, 2010

I am using the following code to receive data in a seprate thread

[code]...

Now if my client shuts down elegantly then my application knows that the client has disconnected but if my client is removed from the network or any other issue occurs them my application does not appear o know that the client disconnected why is this ??

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How To Check If Client Socket Has Disconnected

Apr 13, 2009

i am using the client/server classes for file transfer by moeur.what i want to know is that once my client is connected to the server and after that the client machine goes off the network. now when my server trys to send a file or some message to the client i am not able to trap the error that the client is disconnected.how to do this. there might be a case where the client machine suddenly shuts down. in such cases how will my server know that the client has disconnected.

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Network Connections Disconnected After Launching .NET App?

Feb 17, 2011

I shipped a VB .NET app to my customer. They installed the app in program files folder. The app starts and everything works ok. Now my customer reports that some intranet TCP/IP connections are interrupted after starting the app. Sometimes they are not available after starting my app, sometimes the intranet connections are still available after my app has been started. After my app has been started, there are connection error messages to their intranet services. After re-starting the machine, they still can't connect to the intranet services. A fix is to login with another user name or re-load the profile from the server after they have been logged in on another machine.

Do you have any ideas where to start further investigations? Is it possible that my .NET app interrupts or blocks intranet connections? Could you recommend any trace tool that gives me a hint when and why the intranet connections are blocked? Why could it work for them after they login on another machine?I am wondering if my .NET app could disable the intranet connections. Do you have any recommendation for testing that?

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Trap A Connection String That Is Disconnected?

Sep 11, 2009

How do i trap a connection string that is disconnected?

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Accessing SQL Server Database In Disconnected Mode Of ADO.Net?

Sep 3, 2009

code to access SQL Server database in connected and disconnected mode through ADO .Net.

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Create An ADODB Disconnected Recordset In Windows Application?

Sep 2, 2011

I'm using an OLEDB connection to a Sybase database, with ADODB.dll file version 7.10.6070.0 (which comes from the Sybase 12.5 package). I need to be able to open a connection, use a command object to fill a recordset from a stored procedure, then close the connection and pass back a disconnected recordset. My attempts so far fail as every time I close the connection, my recordset also closes (which means it is not disconnected).

Is there a property I must set somewhere to indicate that the recordset should be disconnected? I cannot set Recordset.ActiveConnection = False because I get an exception ("Cannot change the ActiveConnection property of a Recordset object which has a Command object as its source."). I do set the Command.ActiveConnection = False, but that doesn't stop the recordset from closing as soon as I close the connection object.[code]...

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VS 2008 - Respond To PING Request Disconnected From Irc Server With "Excess Flood"

Jul 13, 2009

I found an example of a simple irc client, but I'm really confused about how it sends data back to the irc server. In the example, this is the code used to respond to the server's PING request. it lies in the onDataArrival event of a sockets client:[Code]

However with this simplified code, as soon as it tries to respond to the PING request it is disconnected from the irc server with the reason "Excess Flood". So I was hoping someone could explain to me the difference between the pretty complicated method and my simplified one which doesn't work.

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Unable To Close Serial Port After USB / Serial Converter Disconnected

Mar 28, 2006

I have a stand alone VB.Net 2005 application that uses a serial port that generally stays open while the application runs on a Windows XP system. In trying to bullet-proof the UI, I ran into a problem when the USB to Serial Converter normally used to provide the serial port is disconnected while the serial port is open. In trying to handle the resulting error when accessing the port, I find I cannot close the port.

When trying to do so, the error message says something like "unable to close the port. You may not have sufficient permissions." Reconnecting the USB/Serial Converter does not reactivate the port.

[Code]...

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How To Add Update Feature

Jan 29, 2010

I dont really understand how to add the update function to my program.I want it to update from my computer

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Search Feature

Oct 17, 2010

Hey guys,

I am trying to make a search feature in my program. My program has a .csv file that the program will need to search for a equal value that was entered in thr text box. I am just not to sure how to go about this. Just need some insight on how to grt started. Insight please.

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Button's Not Having A 'read Only' Feature?

Feb 8, 2009

i seem to have a problem with my program, here is my situation:I have a UsageID where it gets generated from a database when the user clicks a button (btnAdd). However the rest of the form has textboxes and comboboxes then finally a calculate button (btnCalculate). I want the user to only be able to click the btnCalculate when their is a UsageID present. Here is the code i have currently in the btnCalculate_Click procedure:

No errors come up it just doesn't seem to work, has anyone got any ideas because i'm stuck. Helpful posts will be rated.

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Check For Update Feature?

Oct 12, 2009

I got a hard one for you devolpers.In a popular C++ program BitComet they have a Check For Update feature.How would I have a simple Check For Update and have it warn the user every 1 week or so.

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Feature For IP Location Project?

Jun 14, 2009

Im making an application which is basically a lojack project. Im wanting to get some ideas for maybe other features or the best way to go about this for maximum tracking ability.Right now I have it working the way I think it should work and what it does is get your external IP, it then returns the City, State, Zip, Latitude and Longitude and sends all that info to you in an email. I have it check against a Database that houses computer registration, computer name, and then the status of the laptop which the customer calls in, if its stolen. Right now this is just a piece of software and Im currently working on something low level to do something before Windows loads up. Right now thats not something Im focused on hardcore, but Im working on it and itll get done.

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How To Implement Timeout Feature To Use In DLL

Feb 19, 2011

I need to wait for and event within a given period (30s) and then timeout if this time elapse. I am sending a command to a server from a dll, and I need to wait for response before sending another. I want to implement a timeout feature, that why I need to use a timer. I want to use a timer, but don't know how to use it in a DLL.

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How To Use The Find And Replace Feature

Nov 5, 2009

how to use the find and replace feature? Sort of like what notepad uses. But, it replaced certain characters with a set character, not a changable one.[code...]

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Make Feature Suggestions For .NET?

Jun 17, 2011

Where do we make feature suggestions for VB.NET?Basically, I'd like to suggest that they introduce "strikethrough comments". As an alternative to using the single quote ' for remarks, you can use the backquote (ASCII 96) ` which does exactly the same thing except that the text appears with strikethrough. This would be good for "commenting out" code. So if I am replacing a bit of code, I can "cross out" the old code,

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Use Serial Key Feature In Setup?

Jan 21, 2009

how to secure my vb.net setup with a serial key?

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Use The Advanced Autocomplete Feature In VB?

Dec 7, 2011

I've got this control: [URL].. and I'd like to use the advanced autocomplete feature in VB.

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Use The Find Feature In A Richtextbox?

Feb 2, 2011

i need to create a find feature to find text inside of a richtextbox.

How can I do something like this? The web just takes me everywhere when I google it.

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Using WUSA.EXE - Update Feature

Apr 14, 2009

I want to be able to use Microsoft's Update feature in my app. When doing some research on this, I found out that MS uses an executable called WUSA.EXE for their updates. Unfortunately, you can't just run the executable and expect it to work. So, I guess I'm asking if anyone knows how I can do this. For the moment, my app is only targeted toward Windows Vista.

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What Is The Official Name For This Syntax Feature

Dec 2, 2011

What is the name of the character at the end of each of these lines?

Dim _int As Integer = 1I
Dim _short As Short = 1S
Dim _long As Long = 1L

[code].....

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Adding The 'Select All' Feature In The Datagridview?

Jun 21, 2010

I have a form(EmailContacts) which contains a datagridview and a button to add the data to a textbox of another form. Everything is working fine and i can display data from the database on the datagridview properly. The problem is how do i add a 'Select All' feature such that when the user clicked once on the 'Select All' checkbox, all the checkboxes of the columns are selected?

These are my codes for the form:-
Public Class EmailContacts
Dim xs As String

[code]....

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Asp.net - IE8 Accelerator Feature Allows Cheating In Our Tests?

Mar 30, 2011

In my company, we make software which we use to test certain skills and intelligence factors of people. Some of those tests are time bound. On the test page, there is an asp control that shows the time remaining. When you right click that control, the javascript that provides the time is interrupted. To solve that, we disabled right-clicking. But now i've noticed that if you do a selection of some text and click the IE8 accelerator blue button, the javascript is also interrupted. Disabling the left-click if of course no option.

I've found an option in IE that disables the accelerator, so for us internally, the issue is solved. But we would like to find another solution, just because we cannot ask every one of our customers to go disable that option on all their computers.

[Code]...

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ASP.NET Role Manager Feature Has Not Been Enabled

Jul 7, 2011

I'm trying to create a routine in my asp.net's main page that will see if the current user is a member of a Windows domain group. The site is hosted in IIS and is visible through our intranet.

GlenFerrieLive listed this code (which I'd like to use) in an earlier post:
UserName = System.Environment.UserName
If Roles.IsUserInRole(UserName, "MyDomainMyGroup") Then

[Code]....

Problem is, now I'm getting the configuration error 'Default Role Provider could not be found'.

How can I get around this? I just need to see if the current user exists in a specific domain group.

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