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

Author: SreemonPremkumarM

README.md

@@ -1,2 +1,19 @@
-# How-to-count-checked-nodes-of-WF-TreeViewAdv
-This respository contains the sample that how to count the checked nodes of WF TreeViewAdv control.
+# How to count checked nodes of WinForms TreeViewAdv
+
+This respository contains the sample that illustrate how to count the checked nodes of [WinForms TreeViewAdv](https://www.syncfusion.com/winforms-ui-controls/treeview) control.
+
+You can get the count for all checked nodes in WinForms [TreeViewAdv](https://help.syncfusion.com/cr/windowsforms/Syncfusion.Windows.Forms.Tools.TreeViewAdv.html) control by using [CheckedNodes](https://help.syncfusion.com/cr/windowsforms/Syncfusion.Windows.Forms.Tools.TreeViewAdv.html#Syncfusion_Windows_Forms_Tools_TreeViewAdv_CheckedNodes) property. The `CheckedNodes` property retrieves the checked nodes of the `TreeViewAdv`, which is of type [CheckedNodesCollection](https://help.syncfusion.com/cr/windowsforms/Syncfusion.Windows.Forms.Tools.CheckedNodesCollection.html). Refer the below code for your reference.
+
+#### C#
+
+``` csharp
+int checkedCount = treeView1.CheckedNodes.Count;
+```
+
+#### VB
+
+``` vb
+Dim checkedCount As Integer = treeView1.CheckedNodes.Count
+```
+
+![How to count checked nodes of WinForms TreeViewAdv](https://www.syncfusion.com/uploads/user/kb/wf/wf-57845/wf-57845_img1.png)