What is the use of a Dispatcher Object in WPF?

wpf dispatcher
mrbradleyt picture mrbradleyt · Oct 1, 2008 · Viewed 20.9k times · Source

What is the use of a Dispatcher Object in WPF?

Answer

arik picture arik · Nov 19, 2010

Almost every WPF element has thread affinity. This means that access to such an element should be made only from the thread that created the element. In order to do so, every element that requires thread affinity is derived, eventually, from DispatcherObject class. This class provides a property named Dispatcher that returns the Dispatcher object associated with the WPF element.

The Dispatcher class is used to perform work on its attached thread. It has a queue of work items and it is in charge of executing the work items on the dispatcher thread.

You can find on the following link some more details on the subject: http://blogs.microsoft.co.il/blogs/arik/archive/2010/08/12/wpf-inside-out-dispatcher.aspx

Related questions

Change WPF controls from a non-main thread using Dispatcher.Invoke

I have recently started programming in WPF and bumped into the following problem. I don't understand how to use the Dispatcher.Invoke() method. I have experience in threading and I have made a few simple Windows Forms programs where I …

Read More
Using the C# Dispatcher in WPF Applications

I'm building a chat client and am not 100% sure on how to use the dispatcher. So the question is I have a method as such: public void LostConnection() { myGUI.chatBox.AppendText("Lost connection to room: "+ myGUI.UsernameText.ToString() + "\r\n"); } …

Read More
How to put delay before doing an operation in WPF

I tried to use the below code to make a 2 second delay before navigating to the next window. But the thread is invoking first and the textblock gets displayed for a microsecond and landed into the next page. I heard …

Read More