Another version of this product is already installed…
Trying to upgrade my Apache server, and getting this helpful message from Windows Installer. Well, this time I know it is Apache, but how many times I did not? How […]
ikriv
WPF Grid: Showing Tooltip over Empty Space
You can define a tooltip on a grid (or border), but it will show up only when the mouse hovers over space “occupied” by a grid item. Empty space will […]
WPF Custom Panels: Thou Shalt Measure Your Children
Custom panels must call Measure() on their children, even if they ignore the result. Calling just Arrange() causes weird behavior: wrap panels don’t wrap, controls get out of bounds, etc. […]
If your custom WPF control just would not show up
Story in a nutshell – my custom control was not visible. Reason: we defined default style for the control in our own resource dictionary, which was merged into application resources. […]
Why I don’t like SQL
Had a discussion with some friends where I said I don’t like SQL and consider it an atavism. They disagreed and said that SQL is a very insightful language and […]
.NET: decimal is not primitive?
typeof(decimal).IsPrimitive returns false. Apparently,
WPF: Passing Data to Sub-Views via DataContext Causes Trouble
Imagine I have a main view that contains a number to sub-views. To be concrete, let’s assume that the sub-view is a user control of type PersonView that displays person’s […]
F#: Parametrized Types
Learned something new today. It turns out in current incarnation of F# you can have “parametrized types”. Although it sounds like another flavor of templates, it is nothing like it. […]
How to Create a New View in MVVM?
Let’s say I have a view that must open another window on command. Where would this code sit? The model? Don’t be ridiculous. The view model? Yes, it’s where the […]
MVVM in Two Sentences
1. The view model shall never directly manipulate the controls.. 2. The view shall never manipulate the model.. These are two negatives, because they govern the separation of concerns. Most […]