Question

Explain UpdateSourceTrigger in WPF?

Answer 1

UpdateSourceTrigger is a property in WPF that controls how data is updated from the target back to the source in data binding scenarios.

Step-by-step explanation:

UpdateSourceTrigger is a property in WPF that defines when and how data is updated from the target back to the source. It is used in data binding scenarios to control how changes in the user interface are reflected back to the bound data object.

For example, if you have a TextBox bound to a property in your code-behind, you can use UpdateSourceTrigger to specify when the TextBox's Text property should update the bound property. The default value is LostFocus, but you can also set it to PropertyChanged to update the source property as soon as the TextBox's Text property changes.