Wpf textbox binding not updating source speed dating in bradford west yorkshire


26-Oct-2016 08:03

As of writing, all properties except for the Text property, is updated as soon as the property changes (Property Changed), while the Text property is updated when focus on the destination element is lost (Lost Focus).

Default is, obviously, the default value of the Update Source Trigger.

We saw this with a Slider and a Text Block that were bound to the same value.

For example, if a read-only property is calculated according to other, data-bound properties, controls that are linked to the calculated value will not normally update.If and only if the binding is done in Two Way mode then the target is able to update the source value (the Text Block is able to update the View Model).This synchronisation is done immediately : each change of the target value, even a tiny tiny one update the source.This behavior is controlled by a property on the binding called Update Source Trigger.

It defaults to the value "Default", which basically means that the source is updated based on the property that you bind to.listen for changes in the target property and propagate them back to the source. Usually, these updates happen whenever the target property changes.



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