Invalid: MY-COUNTER In the preceding example: Alternatively, use a foreach loop with Enumerable.Range, which doesn't suffer from the preceding problem: A common scenario with nested components executes a parent component's method when a child component event occurs. The following Counter component splits HTML and Razor markup from C# code using a code-behind file with a partial class: @using directives in the _Imports.razor file are only applied to Razor files (.razor), not C# files (.cs). For example, each time a person is inserted into the people collection, the user's focus is lost. The JS component generation sample on GitHub demonstrates how to generate Angular and React components from Razor components. Then I changed the name of the class in the Url.Action for the button to "IndexController" instead of "IndexModel" but that didn't change anything. We start with adding a button click event, and for this, we are going to use a textarea to bind a value to a property. Essential ASP.NET Core Button provides support to display a Button control within your web page and allows you to Click, Toggle Click, Reset, and Submit. Static assets are located in the project's web root (wwwroot) folder or folders under the wwwroot folder. The following ListGenericTypeItems2 component receives data and cascades a generic type parameter named TExample to its descendent components. It is better to use a submit button. If there is a value it creates a button and sends the call value to a JS Action. Register a root component as a custom element: In a Blazor WebAssembly app, call RegisterAsCustomElement on RootComponents in Program.cs: Include the following