Persisting expanded/collapsed state of TreeView - how?
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Hi all, I have a TreeView control in a C# ASP.Net 2.0 project and (so far) have not been able to work out how to persist the state of the expanded/collapsed nodes between postbacks. At present, whenever the page comes back from a postback all nodes are expanded instead of just the ones the user physically expanded. Is this functionality available as part of the standard treeview or does the developer need to write it? I found Tom John's article (http://www.codeproject.com/vb/net/TreeViewDataAccess.asp) regarding serializing the state of the TreeView but I still find it hard to believe the ASP.Net control does not cater for this in some way itself.... am I missing something simple? TIA for any help/suggestions etc. Mike
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Hi all, I have a TreeView control in a C# ASP.Net 2.0 project and (so far) have not been able to work out how to persist the state of the expanded/collapsed nodes between postbacks. At present, whenever the page comes back from a postback all nodes are expanded instead of just the ones the user physically expanded. Is this functionality available as part of the standard treeview or does the developer need to write it? I found Tom John's article (http://www.codeproject.com/vb/net/TreeViewDataAccess.asp) regarding serializing the state of the TreeView but I still find it hard to believe the ASP.Net control does not cater for this in some way itself.... am I missing something simple? TIA for any help/suggestions etc. Mike