StatusHasChanged in .razor.cs

The StatusHasChanged method is a method of the ComponentBase class in the Blazor framework. This method is used to notify the framework that the component's state has changed, and that the component's view should be re-rendered.

The StatusHasChanged method is typically called whenever a component's state changes in a way that affects the component's view. For example, if a component has a property that is bound to an input element in the view, and the value of the property changes, the StatusHasChanged method should be called to ensure that the view is updated with the new value.

Here is an example of how the StatusHasChanged method can be used in a Blazor component:

@page "/counter"

@using Microsoft.AspNetCore.Components

<h1>Counter</h1>

<p>Current count: @currentCount</p>

<button @onclick="IncrementCount">Click me</button>

@code {
    private int currentCount = 0;

    private void IncrementCount()
    {
        currentCount++;
        StatusHasChanged();
    }
}

In this example, the StatusHasChanged method is called in the IncrementCount method whenever the value of the currentCount property is incremented. This causes the view to be re-rendered, updating the currentCount value displayed in the view