Question

Sometimes I saw that when I call a method from my form to do something that my UI freezes. How to solve this problem? If I call that method in separate thread then problem will be solved?

If I call method in separate thread like the code below

new System.Threading.Thread(delegate()
{
  HeavyMethod();
}).Start();

does this solve my problem or is there any better solution?

Answer 1

Call the method on a Background Worker would be the best solution.
http://msdn.microsoft.com/en-us/library/system.componentmodel.backgroundworker.aspx

Doing that you can control when things get updated (using the Report Progress Feature) and allow you to cancel the work.

Also, make sure that whatever resources you manipulate in the backgroundWorker1.RunWorkerAsync(); are properly shared. You can get into what is called “Race Conditions” which causes your output to be non-determanistic (e.g. you won’t get the same results every time you run the method)

For a good walk through on Multithreading and shared resources, see this link:
http://www.c-sharpcorner.com/uploadfile/mgold/multithreadingintro10062005000439am/multithreadingintro.aspx?articleid=920ecafc-e83b-4a9c-a64d-0b39ad885705