The CollapseAll method in the System.Windows.Forms.TreeView class in C# is used to collapse all the tree nodes in the TreeView control. This means that all the child nodes under the expanded parent nodes will be hidden and the parent nodes will appear collapsed. This method helps in quickly collapsing all the nodes in the treeview at once, making it easier to navigate and manage the tree structure.
C# (CSharp) System.Windows.Forms TreeView.CollapseAll - 16 examples found. These are the top rated real world C# (CSharp) examples of System.Windows.Forms.TreeView.CollapseAll extracted from open source projects. You can rate examples to help us improve the quality of examples.