Merge pull request #1 from vijayarasan/master

How to search TreeNodeAdv based on its tag value in WinForms TreeViewAdv?

Author: AmalRajUmapathySelvam

README.md

@@ -1,2 +1,49 @@
 # How to search tree node based on its tag value in winforms treeviewadv?
-This example explains how to search tree node based on its tag value in winforms treeviewadv.
+
+## Search TreeNodeAdv based on its tag value
+
+In **TreeViewAdv**, you can filter **TreeNodeAdv** based on its Tag value. The following code example demonstrates the same.
+
+**C# Code Snippet:**
+
+```C#
+List<TreeNodeAdv> nodes;
+//To search all nodes
+nodes = treeViewAdv1.SearchTree().Where(n => n.Tag == "Search node").ToList();
+public static class SOExtension
+{
+    public static IEnumerable<TreeNodeAdv> SearchTree(this TreeViewAdv treeView)
+    {
+        return SearchTree(treeView.Nodes);
+    }
+    public static IEnumerable<TreeNodeAdv> SearchTree(this TreeNodeAdvCollection coll)
+    {
+        return coll.Cast<TreeNodeAdv>().Concat(coll.Cast<TreeNodeAdv>().SelectMany(x => SearchTree(x.Nodes)));
+    }
+}
+
+```
+
+**VB Code Snippet:**
+
+```VB
+Private nodes As List(Of TreeNodeAdv)
+'To search all nodes
+nodes = treeViewAdv1.FlattenTree().Where(Function(n) n.Tag = "Search node").ToList()
+Public Module SOExtension
+    <System.Runtime.CompilerServices.Extension()> _
+    Public Function SearchTree(ByVal treeView As TreeViewAdv) As IEnumerable(Of TreeNodeAdv)
+        Return SearchTree(treeView.Nodes)
+    End Function
+    <System.Runtime.CompilerServices.Extension()> _
+    Public Function SearchTree(ByVal coll As TreeNodeAdvCollection) As IEnumerable(Of TreeNodeAdv)
+        Return coll.Cast(Of TreeNodeAdv)().Concat(coll.Cast(Of TreeNodeAdv)().SelectMany(Function(x) SearchTree(x.Nodes)))
+    End Function
+End Module
+
+```
+
+The following screenshot illustrates the search TreeNodeAdv by using its Tag value.
+ 
+![Search TreeNodeAdv by using its tag value](Searchbytagvalue.png)
+

Searchbytagvalue.png

@@ -0,0 +1,58 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Windows.Forms;
+using Syncfusion.Windows.Forms.Tools;
+
+namespace TreeViewCustomControl
+{
+    public partial class Form1 : Form
+    {
+        #region Constructor
+
+        public Form1()
+		{
+			InitializeComponent();
+			this.treeViewAdv1.Nodes[0].CustomControl = this.comboBoxAdv1;
+            this.treeViewAdv1.Nodes[2].Nodes[0].CustomControl = this.comboBoxAdv3;
+
+            this.treeViewAdv1.Nodes[0].Tag = "Search node";
+            this.treeViewAdv1.Nodes[1].Tag = "Search node";
+            this.treeViewAdv1.Nodes[2].Tag = "Search node";
+            this.treeViewAdv1.Nodes[2].Nodes[0].Tag = "Search node";
+
+            //To search all nodes
+            nodes = treeViewAdv1.SearchTree().Where(n => n.Tag == "Search node").ToList();
+		}
+
+        #endregion
+
+        List<TreeNodeAdv> nodes;
+
+        private void textBox1_TextChanged(object sender, EventArgs e)
+        {
+            this.listBox1.Items.Clear();
+            if (this.textBox1.Text == "Search node")
+            {
+                foreach (TreeNodeAdv item in nodes)
+                {
+                   this.listBox1.Items.Add(item.Text + " :" + "Tag : " + item.Tag);
+                }
+            }
+        }
+	}
+
+    public static class SOExtension
+    {
+        public static IEnumerable<TreeNodeAdv> SearchTree(this TreeViewAdv treeView)
+        {
+            return SearchTree(treeView.Nodes);
+        }
+
+        public static IEnumerable<TreeNodeAdv> SearchTree(this TreeNodeAdvCollection coll)
+        {
+            return coll.Cast<TreeNodeAdv>().Concat(coll.Cast<TreeNodeAdv>().SelectMany(x => SearchTree(x.Nodes)));
+        }
+    }
+}