Wpf binding not updating property sexy online dating love site
Databinding is a fundamental part of the WPF, Silverlight and the Silverlight for Windows Phone 7 frameworks.It is a powerful concept that once mastered allows you to write concise and elegant code.The third and last Text Box uses the Property Changed value, which means that the source value will be updated each time the bound property changes, which it does in this case as soon as the text changes.Try running the example on your own machine and see how the three textboxes act completely different: The first value doesn't update before you click the button, the second value isn't updated until you leave the Text Box, while the third value updates automatically on each keystroke, text change etc.
The first one is set to Explicit, which basically means that the source won't be updated unless you manually do it.
OK, so the title is a little ambitious, but there is nothing wrong with setting yourself lofty aims!
Because of the depth of this topic I have decided to split this tutorial up into a series of blog posts, each of which explore a different aspect of the binding framework.
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.The Update Source Trigger property of a binding controls how and when a changed value is sent back to the source.However, since WPF is pretty good at controlling this for you, the default value should suffice for most cases, where you will get the best mix of a constantly updated UI and good performance.I don't usually write tutorial blog posts and series, preferring instead to develop new controls or novel techniques.