Listview update flickering problem

[John Lee]

Hi,

I have a windows application that uses the listview to display about 50
items in detailed view - 4 columns. The first column is static and other
columns will be updated in 100-1000ms - it looks awful when it's running -
flickering too much!!!

Anyone know how to solve this flickering problem? or how should I deal with
this issue? I see some other C++ app can display more than 100 items without
any flickering in such as speed. Can we achieve the same effect in C#?

Thanks a lot!

John

 

[Jay]

use following code in the contructor.

// set control styles
this.SetStyle(ControlStyles.DoubleBuffer, true);
this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
this.SetStyle(ControlStyles.UserPaint, true);
this.SetStyle(ControlStyles.ResizeRedraw, true);

regards

Jay

 

[John Lee]

Thanks Jay for your response.

I tried your code and it still flickering a lot. To demonstrate it, you can
grab a listview, create 3 columns - name, value, timestamp, in form_load
event to add 50 items into that listview as Item1 - Item49, add a timer to
your windows form, set the timer interval to 100 ms, in the event handler,
add the code to update the value and timestamp

Random r = new Random();
listView1.BeginUpdate();
for (int i = 0; i < 50; i++)
{
listView1.Items.SubItems[1] = r.Next(0, 10000).ToString();
listView1.Items.SubItems[2] = DateTime.Now().ToLongTimeString();
}
listView1.EndUpdate();

Anyone could make the flickering goes away would be my star!!!! or any other
solution to this fast updating problem?

Thanks in advance!
John