Wpf dependencyproperty binding not updating
In the following example we limit the time to be in the past. Is does not make sense to provide a setter for this value.
Maybe you ask yourself, why not just use a normal . One important reason is that you cannot set triggers on normal . Creating a read only property is similar to creating a regular Dependency Property. This key should be stored in a private or protected static readonly field of your class.
My goal is not to create a clock, but a search form, so I want it to be set at now at the creationg, but I don't want it to follow the clock.
I have added an example of how to create dependency properties in F# on my blog as there are some tricks to it.
So you see, it's not possible to have all those properties on all WPF controls. They are defined by the control that needs the data from another control in a specific context.But I’m not going to give up so soon, at least not while there are other options to consider 😉 The solution to our problem is actually quite simple, and takes advantage of the even when they’re not in the visual or logical tree.I don’t know the exact mechanism that enables this behavior, but we’re going to take advantage of it to make our binding work…For example on our WPF Input controls here is how the Value property is declared: .Lost Focus that specifies the update is performed when the input control has lost focus.
A good example is a progress bar with a Value set below the Minimum or above the Maximum.