ES-975464 - Resolve the ReadMe file length issue in this sample repository

Author: SreemonPremkumarM

README.md

@@ -1,2 +1,40 @@
 # How to search and select the record in wpf and uwp treegrid?
-This example illustrates how to search and select the record in wpf and uwp treegrid
+
+This example illustrates how to search and select the record in [WPF TreeGrid](https://www.syncfusion.com/wpf-controls/treegrid) and [UWP TreeGrid](https://www.syncfusion.com/uwp-ui-controls/treegrid).
+
+You can search and select a record in `TreeGrid` based on the searched text using the `TextChanged` event of `TextBox`.
+
+``` c#
+private void TextBox_TextChanged(object sender, System.Windows.Controls.TextChangedEventArgs e)
+{
+    var textBox = sender as TextBox;
+    var treeGrid = this.AssociatedObject.treeGrid;
+    if (textBox.Text == "")
+        treeGrid.SelectedItems.Clear();
+
+    for (int i = 0; i < treeGrid.View.Nodes.Count; i++)
+    {
+        if (Provider == null)
+            Provider = treeGrid.View.GetPropertyAccessProvider();
+
+        if (treeGrid.View.Nodes[i].HasChildNodes && treeGrid.View.Nodes[i].ChildNodes.Count == 0)
+        {
+            treeGrid.BeginInit();
+            treeGrid.ExpandNode(treeGrid.View.Nodes[i]);
+            treeGrid.CollapseNode(treeGrid.View.Nodes[i]);
+            treeGrid.EndInit();
+        }
+        else if (treeGrid.View.Nodes[i].HasChildNodes)
+        {                    
+            dataRow = (treeGrid.View.Nodes[i].Item as EmployeeInfo);
+            FindMatchText(dataRow);
+            GetChildNodes(treeGrid.View.Nodes[i]);
+        }
+        else
+        {
+            dataRow=(treeGrid.View.Nodes[i].Item as EmployeeInfo);
+            FindMatchText(dataRow);
+        }
+    }
+}
+```