Wpf binding not updating property
Suppose we have one one Slider control and one textbox. Drag Drop One Slider control on the WPF form .a Textbox ..Now if I move slider its value should be displayed in text box and when I input some value in textbox it should be reflected in Slider too.. Setup the GUI like shown in below image Now we want to bind Text Box Text Property to the Slider's value property ..In the first step, we eliminated some boilerplate, and now, we’ve added it back into the mix.Instead of in our setter, it sits above our property.The first thing anybody is going to notice after implementing a few properties to back the UI is that each property setter requires an annoying amount of boilerplate.So, any Pragmatic Programmer would find a solution that didn’t involve all of this repetition–abstracting the boilerplate into a common method: Clearly, this is better.As I’ve been learning WPF with C# over the past year (coming from a background of C and Java before that), my implementation of this has evolved a bit, and I thought I’d share the progression and my thoughts on why each subsequent implementation is an improvement.
The idea here is to prevent spurious event firing and thus spurious event handling.
After being shown this technique and using it for a while, I felt increasingly like something wasn’t quite right and there was room for improvement. First, the property changed args were being created at application startup, for every property, whether or not anyone ever set it.
Pedantically (though sometimes practically), this is not as efficient as it could be.
You’ve eliminated two lines of code and a conditional from property setters.
Amortized over an application, this will make the code more readable, more succinct, and easier to reason about.