How do I get a specific instance of a custom Blazor component?
We can define specific instances for custom components by using @ref while defining the component in a Razor file. In this sample, we have created the component reference for the card components with specific names. Using this reference, we can access the card component properties and modify them. Here we have changed the display property using the component reference.
How do you detect whether a page is loaded in mobile or on desktop?
There is no direct way to detect whether the page is loaded on mobile or desktop in Blazor. We have to find out through the userAgent property from the JavaScript side using a JSInterop call. In order to find out, add a “script.js” file in the wwwroot folder and include the isDevice method call. You can then invoke the isDevice method to identify the correct device. Refer to the following code for further details. Refer the script file in the HTML page For more details about mobile browser detection, refer to this link.
How do I show an alert message in a Blazor application?
If you want to show a message using a simple browser alert message box, it is easy to do in Blazor. In Blazor, you can call a JavaScript method using JavaScript interop. In the following code snippets, the text entered in the text box will be displayed in the alert box. In order to call the JavaScript method in Blazor, you should register the method in the browser window class. You can pass the message you want to show by passing method parameters in the JSRuntime.InvokeAsync method. Refer the script file in the HTML page
How do you show real-time data updates using ObservableCollection?
This ObservableCollection (dynamic data collection) provides notifications when items are added, removed, and moved. The implemented INotifyCollectionChanged provides notifications when dynamic changes of adding, removing, moving, and clearing the collection occur. The implementation of INotifyPropertyChanged notifies when property value has changed in client side. Here, Order class implements the interface of INotifyPropertyChanged and it raises the event when CustomerID property value was changed. In the sample, we have add, delete and update buttons where the observable data for the table will be populated, removed or updated through the button click.
How can I redirect to another page in Blazor?
You can redirect to a page in Blazor using the Navigation Manager’s NavigateTo method. In the following code snippet, it will redirect to the home page when this page gets loaded. Similarly, you can call NavigateTo() method from NavigationManager class anywhere to redirect to another page. Refer to the following code snippet.
