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.NET Forum / ASP.NET / General / September 2007Controls.Count, Controls.IsSynchronized, and Controls.SyncRoot
I have a section of my code in which I need to know how many child controls a control has. Right now Controls.Count is returning the wrong value, which I realize is because Controls.IsSynchronized is False. After spending a few hours trying to figure out how I could determine the number of child controls, I discovered that Controls.SyncRoot is somehow involved, but I had trouble understanding exactly what I need to do. Could somebody please help me? Thanks.  SignatureNathan Sokalski njsokalski@hotmail.com http://www.nathansokalski.com/ you are on the wrong track. unless you are spinning up new threads during a page request and those threads are adding child controls, there is no need to use Controls.IsSynchronized. Controls.Count is only your controls immediate count. each of its child controls can have children. also when you test it, all the children may not be created. what makes you think the count is wrong? -- bruce (sqlwork.com) > I have a section of my code in which I need to know how many child controls > a control has. Right now Controls.Count is returning the wrong value, which [quoted text clipped - 3 lines] > trouble understanding exactly what I need to do. Could somebody please help > me? Thanks. I know the count is wrong, because first of all, I used the Controls.Add() method to add multiple Controls, so I know that there are more than 1. Also, I did a Debug and looked at the Controls.Count property immediately before and immediately after adding the control, and it had changed from 1 to 2. And yet, on the next postback that same Control had a Controls.Count value of 1 again instead of remaining at 2. This did not make since to me, so the only possibility I could come up with (although I admit I have very little experience with threads and synchronization, even though this is not a multi-threaded application) was that it had something to do with all the synchronization stuff I found while trying to find an answer. I'm totally confused about this now. Any ideas? SignatureNathan Sokalski njsokalski@hotmail.com http://www.nathansokalski.com/ > you are on the wrong track. unless you are spinning up new threads during > a page request and those threads are adding child controls, there is no [quoted text clipped - 15 lines] >> involved, but I had trouble understanding exactly what I need to do. >> Could somebody please help me? Thanks. > And yet, on the next postback that same Control had a Controls.Count value > of 1 again instead of remaining at 2. Dynamically added controls do not survive post back. They need to be added again in every postback. > I have a section of my code in which I need to know how many child controls > a control has. Right now Controls.Count is returning the wrong value, which Just a couple of points to consider,,,, 1) Controls.Count is the count of only immediate children, not the grand-children. 2) Plain text (sometimes even a space), which apparently may not look like control, become controls. To add complexity, it is not guaranteed how many controls would this text divide into.
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