GUI

As part of my work at Tzunami Inc., I’m working on migrating our product Deployer – a SharePoint migration tool – from .Net 1.1 to .Net 2.0 and Visual Studio 2005. One of the first things we’ve encountered was the managed debugging assistants (MDA). I’ll talk about the MDAs in a later entry, but for … Read more

Even the smallest thing, when thought upfront, can help you go a long way. Whenever you create an application that is more that two forms thrown together, and that does a little bit more than just saying “Hello world”, you’ll encounter a point where you’ll want to use threads. So if you’re going to reach … Read more

It is often useful to provide the user with information on the screen, without interfering his work. Usually, you would just create a window with a somewhat lower opacity, allowing the user to see what’s beneath your window. However, this window will still receive all the normal windows events, and mostly, the user’s mouse clicks.To … Read more

I’ve recently came across a nice post on C# Frequently Asked Questions blog. In the post, they’ve shown a way to filter out, or (pre)process Win32 messages of a form. Let’s have a look at the code, then we’ll go through it. And in the form itself: As you can see, we’ve started by creating … Read more

Introduction It is sometimes necessary to add items to a bound ComboBox that will appear at the beginning of the drop-down list. If you ever tried to add items to a ComboBox that was bound, you probably know that an ArgumentException is thrown, saying that Cannot modify the Items collection when the DataSource property is … Read more

The different between a nice application and an exellent one, is many time only in the small details. How much did the developers really put into it? How much they thought about every detail?The following code is nothing more than an eye-candy, but we all know that it’s those simple things, that take seconds to … Read more

Preventing an item in a CheckedListBox or a ListView with CheckBoxed is a really basic requirement when dealing with GUI. The simple and elegant code is for some reason, quite under-sampled. Assuming that you know which item you want to prevent the user from changing, all you have to do is register on the ItemCheck … Read more

In most of the cases where you need to use a ComboBox, you need it only so the user will be able to choose between a couple of string values. In the majority of the cases, you’ll have a list of objects that you’ll want the user to choose from, and you’ll have to do … Read more

As I was working on a new GUI part of the software I’m working on, I needed to allow the user to choose only a single item in each category. I overloaded the ListView control, and override the OnItemCheckmethod. Here’s the result: