'宣言 Protected Overridable Sub OnBeforeCollapse( _ ByVal e As CancelableNodeEventArgs _ )
protected virtual void OnBeforeCollapse( CancelableNodeEventArgs e )
Imports Infragistics.Win.UltraWinTree Private Sub ultraTree1_BeforeCollapse(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTree.CancelableNodeEventArgs) Handles ultraTree1.BeforeCollapse Dim sb As New System.Text.StringBuilder() sb.Append("Node: ") sb.Append(e.TreeNode.Key) sb.Append(" is about to be collapsed.") Debug.WriteLine(sb.ToString()) ' 注: この操作が以下のコード行によってキャンセルできます 'e.Cancel = True End Sub
using System.Diagnostics; using Infragistics.Win.UltraWinTree; private void ultraTree1_BeforeCollapse(object sender, Infragistics.Win.UltraWinTree.CancelableNodeEventArgs e) { System.Text.StringBuilder sb = new System.Text.StringBuilder(); sb.Append("Node: "); sb.Append(e.TreeNode.Key); sb.Append(" is about to be collapsed."); Debug.WriteLine( sb.ToString() ); // 注: この操作が以下のコード行によってキャンセルできます //e.Cancel = true; }