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when i use TogglePattern.Toggle() method to select the treeItem,it will be selected,but a few seconds later,the treeItem state become not can i solve this question.can anybody give me an answer?

TogglePattern togPattern = (TogglePattern)treeElementCollection[i].GetCurrentPattern(TogglePattern.Pattern);

if (togPattern.Current.ToggleState == ToggleState.Off)
the code is here,as I just described.
Posted 25-Apr-13 0:51am
Edited 25-Apr-13 5:18am
Erik Rude 25-Apr-13 8:07am
try posting some code. Maybe some one will be able to spot the issue.
Try limiting the amount of code to just what makes this behaviour happen.
This is not what this pattern does (even if you can use it). And why changing the state by time? I don't see any sense in it...
xuyunhai 25-Apr-13 9:53am
but just these code to select the treeItem.
you can download a tool named bus hound.and choose the "Device" page.
this page contains treeview component.
you can test to select the treeItem use my code.then you will find the problem.

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