(sorry for bad English)
I have a big problem with performance of DataGridView
when it re-paints.
I'm using a DataGridView
to show logs from an external application stream. Messages from the stream come in with a high frequency (less than 1 ms). If I add new row to the DataGridView
immediately when each new message comes, the DataGridView
doesn't have time to re-paint itself before the next message comes.
A possible solution is to use a queue to collect messages and re-paint DataGridView
every 100 ms with messages from queue. This is good but the DataGridView
blinks when it auto-scrolls to the last row. (Smooth scroll is disabled)
Can you help me to improve DataGridView
performance?
I recently had some slowness issues with DataGridView
and the solution was the following code
public static void DoubleBuffered(this DataGridView dgv, bool setting)
{
Type dgvType = dgv.GetType();
PropertyInfo pi = dgvType.GetProperty("DoubleBuffered",
BindingFlags.Instance | BindingFlags.NonPublic);
pi.SetValue(dgv, setting, null);
}
It turns double buffering on for DataGridView
objects. Just call DoubleBuffered()
on your DGV. Hope it helps.
Edit: I might've gotten this off SO, but I can't search for the original right now so this is just to emphasize that the code isn't mine.