How C # resolves updates to the ListView control and UI flicker issues when updating

First question: How to update the contents of a ListView control

Many times when you run a form program, the following exception occurs when you manipulate a control by using multithreading in the program and improper operation:

This is because the control we add to the form has its own thread, so it cannot be accessed from other threads. How do we fix it? Use delegate:methodinvoker , I use this very convenient. Here is a use case:

1 //call Initlistview () to allow the ListView control to be freely updated.2 Private voidInitlistview ()3 {4MethodInvoker in =NewMethodInvoker (initlistviewed);5      This. BeginInvoke (in);6 }7 Private voidinitlistviewed ()8 {Ten     //in this case, you can build the ListView control and update the data. One listView1.Columns.Clear (); A}

Second question: How to troubleshoot a flashing issue when a ListView control is updated

When I update a control, I use a timed update, and every time the content of the control is updated, the user experience is not a good idea.

There is no way to make it not flash, my solution is to use double buffering .

Here is an example of a simple step and approach.

1, the first step: we create a class, the class name is listviewnf, is the ListView control that inherits the form

classListViewNF:System.Windows.Forms.ListView { Publiclistviewnf () {//turn on double buffering             This. SetStyle (Controlstyles.optimizeddoublebuffer | Controlstyles.allpaintinginwmpaint,true);  This. SetStyle (Controlstyles.enablenotifymessage,true); }        protected Override voidonnotifymessage (Message m) {//Filter out the WM_ERASEBKGND message            if(M.msg! =0x14)            {                Base.            Onnotifymessage (m); }        }    }

Note: The added references are added.

Step Two: Modify the code generated by the form designer

　　The private System.Windows.Forms.ListViewNF ListView; Comment out or delete a line of code

　　Add LISTVIEWNF ListView1;

LISTVIEWNF ListView1;
// private System.Windows.Forms.ListViewNF ListView;

The third step: since you changed the ListView to ListView1, there will be a lot of errors, so you need to change the location of the ListView to ListView1,

There is one place where you need to change the original code to a format (where the yellow box is circled)

In the above way, the content will be very comfortable to update.

I do not know that I am not clear, wrong or there is a better way for everyone to communicate with me, I also just use C #, still do not know.

How C # resolves updates to the ListView control and UI flicker issues when updating