CODEWITHSUNDEEP
c#winformstreeview
Al Lelopath
Al Lelopath

Reputation: 6778

When clicking on a new node in the tree, how to get the old node?

I'm looking at the TreeView events and not seeing it.

For example BeforeSelect shows the new node:

private void myTreeView_BeforeSelect(Object sender, TreeViewCancelEventArgs eventArgs)
{
    System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
    string node = "\tNode: " + eventArgs.Node; // This is the new node
    string action = "\tAction: " + eventArgs.Action; // ByMouse
    string cancel = "\tCancel: " + eventArgs.Cancel; // False
}

Upvotes: 1

Views: 33

Answers (1)

Emre Kabaoglu
Emre Kabaoglu

Reputation: 13146

You can get it by using ((TreeView) sender).SelectedNode

private void myTreeView_BeforeSelect(object sender, TreeViewCancelEventArgs eventArgs)
{
    System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
    string node = "\tNode: " + eventArgs.Node; // This is the new node
    string action = "\tAction: " + eventArgs.Action; // ByMouse
    string cancel = "\tCancel: " + eventArgs.Cancel; // False

    //Get the current selected node/old node after the select processed
    var oldNode = ((TreeView) sender).SelectedNode;
}

Upvotes: 3

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