C # Cross-threading operation is invalid

The reason for this error is that the control is created by the main thread and is blocked while another is operating, preventing arbitrary tampering between the data.

If you must work across threads, such as a progress bar or status display, there are three basic ways to solve it:

1, Control.checkforillegalcrossthreadcalls = false;
Add this sentence in the Form_Load can let the program do not check whether cross-threading access, and naturally will not error. But from its meaning can also be seen, this is not reliable, so not very recommended.

2. Use delegate and invoke to invoke controls from other threads

3. Using BackgroundWorker Components

This is the system provided to us, but also recommended to use a method of comparison!

C # Cross-threading operation is invalid