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Anonymous users2024-02-11After .NET 2005, threads are not allowed to manipulate the UI directly, otherwise an error will be reported, but it can be solved by delegate.
For example, the following datareflash is a method in the thread, which needs to refresh the data of the page control, then you can define a delegate to implement, refer to the aunt as follows:
public void datareflash(string text)
if (text == "901")
myinvoke mi = new myinvoke(binddate);Just put the binddate method in the delegate, similar to your settext method, you can write anything in this method, such as assigning a value to a text box, or rebinding the data source of the datagrid, etc.;
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Anonymous users2024-02-10Use the delegation, or add a sentence in the foreground UI.
checkforillegalcrossthreadcalls = false;Calls to the wrong thread are not captured.
The former is more practical, and the latter treats the symptoms rather than the root cause, but both can achieve results.
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Anonymous users2024-02-09Are you sure to use async? When asynchronous, multithreading is responsible for the creation and operation of threads through the system, and you do not need to operate.
Guess you're getting the usage of async wrong.
That form is busy, simply because the thread that created it doesn't have time to spare (e.g. it's busy or looping), so it can't respond to messages.
Often, what you're doing is not advisable. Because a thread ends when it finishes executing, it is rarely in an idle state for the window to update status messages. To create a form, it is recommended to create it in the main thread as much as possible.
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Anonymous users2024-02-08You can use the Invoke or BeginInvoke method of the control you want to call to invoke a UI control on a non-UI thread.
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Anonymous users2024-02-07For the sake of security between threads, try to use delegations. This part is not difficult, you will be able to look at it a little.
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Anonymous users2024-02-06Methods for program exit:; Just close the current window, if it is not the main form, it is impossible to exit the program, and if there is a managed thread (not the main thread), it cannot be exited cleanly; Force all messages to abort and exit all forms, but if there is a managed thread (not the main thread), it cannot be exited cleanly; Force abort all messages on the calling thread, which also faces the problem that other threads cannot exit correctly; This is the most thorough way to exit, no matter what thread is forced to quit, and the program ends cleanly.
1) In , modify the program class.
using system; >>>More
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