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I have a asp.net treeview control that I need to be able to set a parent node to partially checked to show that child nodes are checked. Basically I need a 3 state or multi-state checkbox. All I can see from looking through the code is ways to set checked true or false.
Thanks.
There is no 3-state or multi-state checkbox in the .Net framework, mostly because this functionality isn’t supported in HTML for a checkbox. There are a number of third party components which do this (such as “FolderView” controls). Or you could pretty easily roll your own server control for this. Sorry for the bad news.