Merge pull request #3 from SyncfusionExamples/SweathaBharathi-patch-1

Update README.md

Author: vijayarasan

README.md

@@ -1,2 +1,24 @@
-# 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 all checked nodes of WinForms TreeViewAdv?
+
+## About Sample
+This sample provides the demo on how to get the count for all checked nodes [WinForms TreeViewAdv](https://www.syncfusion.com/winforms-ui-controls/treeview).
+
+You can get the count for all checked nodes in [WinForms TreeViewAdv](https://www.syncfusion.com/winforms-ui-controls/treeview) control by using [CheckedNodes](https://help.syncfusion.com/cr/windowsforms/Syncfusion.Windows.Forms.Tools.TreeViewAdv.html#Syncfusion_Windows_Forms_Tools_TreeViewAdv_CheckedNodes) property. Refer the below code for your reference.
+
+**C#**
+```csharp
+int checkedCount = treeView1.CheckedNodes.Count;
+```
+
+**VB.Net**
+```csharp
+Dim checkedCount As Integer = treeView1.CheckedNodes.Count
+```
+
+![count of checked nodes](output.png)
+
+Take a moment to peruse the [WinForms TreeViewAdv - CheckBox](https://help.syncfusion.com/windowsforms/treeview/getting-started#checkbox) documentation, to learn more about checkbox with examples.
+
+## Requirements to run the demo
+ 
+Visual Studio 2015 and above versions