'宣言 Public Class NodeEventArgs Inherits System.EventArgs
public class NodeEventArgs : System.EventArgs
Private Sub ultraTree1_AfterActivate(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTree.NodeEventArgs) Handles ultraTree1.AfterActivate Dim sb As New System.Text.StringBuilder() If e.TreeNode Is Nothing Then sb.Append("No node has been activated.") Else sb.Append("Node: ") sb.Append(e.TreeNode.Key) sb.Append(" has been activated.") End If Debug.WriteLine(sb.ToString()) End Sub
private void ultraTree1_AfterActivate(object sender, Infragistics.Win.UltraWinTree.NodeEventArgs e) { System.Text.StringBuilder sb = new System.Text.StringBuilder(); if ( e.TreeNode == null ) { sb.Append("No node has been activated."); } else { sb.Append("Node: "); sb.Append(e.TreeNode.Key); sb.Append(" has been activated."); } Debug.WriteLine( sb.ToString() ); }