private void SelectTreeNodeByText(object txt) { popTree.FilterNodes(); if (string.Format("{0}", txt).Trim().Length == 0) { return; } string _txt = string.Format("{0}", txt).ToUpper(); if (!SetTreeNode(this.popTree.Nodes, _txt, string.Format("{0}", this.EditValue))) { SetTreeNode(this.popTree.Nodes, _txt); } }