Sounds like your UI thread is blocked while the data download, so your form is
not repainting. Try alt-tabbing away from & then back to your form during a
large download & see if other controls also go white. If they do, that's most
likely the problem.
If that is it, I think the typical cure is to get your data on a background
thread. I am not competant to give advice on how to do that (tho lots of
others here are). In case it's of interest, I posted my own plan to get data
on a background thread on the winforms list just yesterday:
http://discuss.develop.com/archives/wa.exe?A2=ind0503c&L=dotnet-winforms&T=0&F=&S=&P=3192
Note tho that I'm asking for feedback on whether my approach will work, so you
don't necessarily want to emulate me...
HTH,
-Roy
-----Original Message-----
From: Unmoderated discussion of advanced .NET topics. on behalf of
Tracy Ding
Sent: Fri 3/18/2005 10:53 AM
To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
Cc:
Subject: [ADVANCED-DOTNET] TreeView is complete white for a blink
Hi,
I have a treeview, using afterselect event to start a child form in MDI
container, but when data loading is big, the tree is complete white for a blink.
I tried to user Beginupdate/Endupdate, but it doesn't help.
Any idea about this ?
Tracy Ding
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