TreeView查获节点并选中节点

 

 

TreeView查获节点并选中节点如果有多个节点则会继续查找下一个节点 支持关键字搜索

        private void SearchNodes(string SearchText, TreeNode StartNode)

        {

            TreeNode node = null;

            while (StartNode != null)

            {

                if (StartNode.Text.ToLower().Contains(SearchText.ToLower()))

                {

                    CurrentNodeMatches.Add(StartNode);

                }



                if (StartNode.Nodes.Count != 0)

                {

                    SearchNodes(SearchText, StartNode.Nodes[0]);//Recursive Search 

                }

                StartNode = StartNode.NextNode;

            }

        }

使用

 

 private List<TreeNode> CurrentNodeMatches = new List<TreeNode>();

        private int LastNodeIndex = 0;

        private string LastSearchText;



        

        private void SearchNodeText_Click(object sender, EventArgs e)

        {

            treeView1.Focus();

            string searchText = this.textBox7.Text;/////////////////
            if (String.IsNullOrEmpty(searchText))

            {

                return;

            }



            if (LastSearchText != searchText)

            {

                //It's a new Search

                CurrentNodeMatches.Clear();

                LastSearchText = searchText;

                LastNodeIndex = 0;

                SearchNodes(searchText, treeView1.Nodes[0]);



            }



            if (CurrentNodeMatches.Count == 0)

             MessageBox.Show("无查找记录!", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);



            if (LastNodeIndex >= 0 && CurrentNodeMatches.Count > 0 && LastNodeIndex < CurrentNodeMatches.Count)

            {

                TreeNode selectedNode = CurrentNodeMatches[LastNodeIndex];

                LastNodeIndex++;

                this.treeView1.SelectedNode = selectedNode;

                this.treeView1.SelectedNode.Expand();

                this.treeView1.Select();

            }

            else

                LastNodeIndex = 0;  

        }