C#•2y ago

WPF Data Binding Shows Blank

I would like to have an

AppState

AppState

class within my WPF apps that can hold common properties I may want to access throughout the application, such as the assembly’s version number.

When I tried to create an instance of this class within my Main Window and then access one of the instance’s properties via a data binding, it’s just showing blank.

I know the property itself is set since I can set the window title via code behind to this property, so I’m a bit stumped why nothing populates when I try to access the instance via a binding. Can anyone shed some light on what I may be missing? See attached for a skeleton example.

AppStateTest.zip2.91KB

Mayor McCheese•1/8/24, 1:53 AM

Have you considered using di for wpf?

Honza K.•1/8/24, 2:37 AM

All properties that are used for binding must be public

MMayor McCheese Have you considered using di for wpf?

MaykaOP•1/8/24, 2:42 AM

Is there a good example of that somewhere online? Still new to dependency injection, so not 100% sure what it would look like for WPF.

HHonza K.All properties that are used for binding must be public

MaykaOP•1/8/24, 2:42 AM

That fixed it, thank you!!! I knew it was something simple, just wasn’t sure what I was missing.

Honza K.•1/8/24, 2:44 AM

Also you might want to consider creating a viewmodel instead of setting datacontext to the view itself

HHonza K.Also you might want to consider creating a viewmodel instead of setting datacont...

MaykaOP•1/8/24, 2:51 AM

I’m dealing with an existing application which I didn’t write that already heavily uses code-behind, so I’m just leaving things as-is for now, since it’s working fine currently. On the first application I create myself from scratch I’ll definitely look into using MVVM, though.

MMayka Is there a good example of that somewhere online? Still new to dependency inject...

Mayor McCheese•1/8/24, 3:31 AM

https://github.com/devdevdeveau/wpf ignore the asp.net stuff, it was a sample for something else

Sir Rufo•1/8/24, 7:45 AM

Another Example https://github.com/SirRufo/so-77657479-PageNavigation based on the nuget package https://www.nuget.org/packages/Wpf.Extensions.Hosting

GitHub

GitHub - SirRufo/so-77657479-PageNavigation: Example for stackoverflow

Example for stackoverflow. Contribute to SirRufo/so-77657479-PageNavigation development by creating an account on GitHub.

Wpf.Extensions.Hosting 1.1.2

Package Description