thread safe code for combobox selectedindexchanged in c#

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Hello can any one help me, i m devloping an application where i need to change from the list of cameras from the combobox. but when i choosing camera it saying its

Cross-thread operation not valid: Control 'combo Camera' accessed from a thread other than the thread it was created on.

Posted 25-Feb-14 7:50am

bijaynayak

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-02-25T07:51:00

You cannot call anything related to UI from non-UI thread. Instead, you need to use the method Invoke or BeginInvoke of System.Windows.Threading.Dispatcher (for both Forms or WPF) or System.Windows.Forms.Control (Forms only).

You will find detailed explanation of how it works and code samples in my past answers:
Control.Invoke() vs. Control.BeginInvoke()[^],
Problem with Treeview Scanner And MD5[^].

See also more references on threading:
How to get a keydown event to operate on a different thread in vb.net[^],
Control events not firing after enable disable + multithreading[^].

—SA