Update README.md

SweathaBharathi · web-flow · commit 4df1c26dfc17 · 2025-08-13T19:13:46.000+05:30
diff --git a/README.md b/README.md
@@ -71,7 +71,7 @@ public class ViewModel
 </Grid>
 ```
 
-```xml
+```csharp
 public partial class MainWindow : Window
 {
     TreeViewItemAdv drag = null;

Original file line number	Diff line number	Diff line change
`@@ -71,7 +71,7 @@ public class ViewModel`
`71`	`71`	`</Grid>`
`72`	`72`	```
`73`	`73`
`74`		-```xml
	`74`	+```csharp
`75`	`75`	`public partial class MainWindow : Window`
`76`	`76`	`{`
`77`	`77`	`TreeViewItemAdv drag = null;`