Blazor

https://blazorhelpwebsite.com/ViewBlogPost/56

In this code snippet, `@onclick` is an attribute used in frameworks like Blazor or Razor Pages to define an event handler for the `onclick` event. The `()=>OnSearch()` part is a lambda expression that defines an anonymous function. In this case, it is used to call the `OnSearch()` method when the `onclick` event is triggered.