In this article, we are going to implement a Blazor WebAssembly application file upload using MudBlazor UI components. Create A Sample Blazor WebAssembly Application: Let's create a sample Blazor WebAssembly application to accomplish our demo on file uploading. Initial MudBlazor Setup: Install the 'MudBlazor' library package. Add Mudblazor namespace into the '_Imports.razor'. _Imports.razor: @using MudBlazor Add the below CSS files inside of the head tag in 'index.html'. wwwroot/index.html: <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap" rel="stylesheet" /> <link href="_content/MudBlazor/MudBlazor.min.css" rel="stylesheet" /> Now comment the 'bootstrap.min.css' and '{your_applicationname}.styles.css' links in the head tag. Add MudBlazor javascript file in 'index.html' just above the closing body tag. wwwroot/index.html: <script