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I have many items (Nodes) grouped by category and I want to display them in a TreeView where parent are text and children are CheckBoxes :

+-CategoryA(Text) ---.A1(CheckBox) ---.A2(CheckBox) +-CategoryB(Text) ---.B1 ---.B2 ---.B3 +-CategoryC(Text) ---.C1(CheckBox) ---.C2(CheckBox)

Here is a code sample :

TreeNode testNodeA = new TreeNode("A"); TreeNode testNodeB = new TreeNode("B"); TreeNode testNodeC = new TreeNode("C"); TreeNode[] array = new TreeNode[] { testNodeA, testNodeB, testNodeC }; TreeNode cat = new TreeNode("Categorie X", array); myTreeView.Nodes.Add(cat);

I already found a similar question Here, but the solution is not elegant since it uses p/invoke to call a C++ code.

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There might be an easier way; but you can do it by setting the draw mode to OwnerDrawAll and deciding what to render.

There's a good example of almost exactly what you want here: http://social.msdn.microsoft.com/forums/en-US/winformsdatacontrols/thread/947aaded-6372-4253-8799-2b595f4a39b9/

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