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Is it true to say that setting up a three tier application can be accomplished by either setting up a COM+ service as the 'business logic' middle tier or by setting up an XML web service to handle the 'business logic'?.

Once you have passed enougth exams to become an MCAD, MCSE, MCSA etc. do you get a physical certificate in the mail or are you supposed to just use the online transcript?

I've been reading up on how to use validation on forms. I need to validate a field has been filled in so I have used the 'Validating' event that is called just before my form textbox loses focus. If the field is blank, the focus stays on the textbox and an appropriate error message is...

I have two questions about Keyup purely out of curiosity and a bit of frustration after not being able to figure a few things out. On a Keyup event you can grab the value of the key pressed by Referring to the KeyEventArg :- MessageBox.Show("The key pressed is " & e.KeyData) The e.KeyData...

I have a panel on a form containing various controls. If I want to set all controls in the panel to a certain set of characteristics, I can code the following:- Dim conMyControl As Control For Each conMyControl In MyPanel.Controls conMyControl.ForeColor = Color.Blue...

I have come across an example in the Wrox book, 'Professional VB.Net 2003' I don't understand. It describes a way in which a property can be overloaded and overriden at the same time from a base class. This as a concept is difficult for me to grasp as overloading and overriding are to me, very...

I am trying to make sense of the new VB.Net suite after using VB6 for some time. I have just tried an example from a Wrox book that works fine but I can’t quite understand. The example is shown below. What I don’t understand is the line:- objSubFolders = New...

We have a small network and I am looking into increasing performance. One possibility is using a switch. I just need to make sure my understanding of a switch is accurate. Does a switch merely service the segment it is connected too? In other words, does it improve performance by increasing...

I need to search a string array for an occurance that matches a string. I thought this would be easy but the only command I could find in MSDN is the ASCAN command. Strangely VB does not recognise it. The syntax is correct but VB just doesn't seem to have it in its vocabulary. Is this the...

I have a PC with windows 2000 professional on it. On a second partition I attempted to load windows 2000 server last night. The installation failed and now I have a boot.ini style menu that starts when I boot up. The options are 'Windows 2000 Professional' and 'Windows 2000 Server'. 'Windows...

I have a set of programs that all access a DB2 server ( AS400 ). In each program I end up coding an identical login form that accepts a username and password which is then validated against the DB2 user profile database. I think I should create this login as a stand alone program that I can...

Symptoms:- Suddenly the machine will slow up or freaze up. I can't run anything from the 'Start' button or the task bar. If I move the mouse over either, I get the hourglass busy symbol instead of the normal active mouse cursor. Selecting windows update via the internet reboots the machine...

I have a small home of two network of 2 PC's attached to the internet via a firewall router. I use UTP CAT5 cable to connect my PC's to the router. On my PC's Local Area Connection properties I have:- Internet Protocol TCP/IP Qos Packet Scheduler File & Printer Sharing For Microsoft Networks...

Hi, I am studying for a Network + qualification and one of the topics covered is the Ethernet standard. I have been told that a fact of Ethernet is that it uses 40% of the available bandwidth. Can anybody tell me why it is so inefficient and what the other 60% is used for? My lecturer...

Could somebody explain to me the difference between an implicit variable definition and an explicit variable definition?

Can somebody explain to me the difference between a class and a module in a VB project?

When I select 'Turn Off Computer' from the 'Start' button and then select 'Turn Off' but instead of shutting down it shuts down and restarts. The only way I can shutdown is by pulling the plug which is crazy. Is there any way to stop this?

I recently bought a new PC with XP Professional on it. I have put a network card in it and my old windows 98 PC and I nted to link the two together to share a cable broadband internet connection and to move files between the two. I have connected both machines to a Gateway router that connects...

Hi, I am 35 and have been working the majority of my career on the AS400/Iseries using RPG. There is a good possibility my current job of ten years will go by the end of next year. To my horor, there doesn't seemd to be many AS400/Iseries jobs about these days in the UK. The only ones I spot...

I'm trying to get a few bits of theory straight in my head regarding ASP. I am a little confused about locking and updates. Hopefully somebody can help me understand how integrity is maintained. Scenario --------- Consider an ASP page that reads a record from an Access database via a standard...