Loading content control for Razor

Loading.razor

/* shows a loading gif/text if a value is null */
@if (Value == null)
{
    <div><img src="/img/SmallLoader.gif" alt="loading" /> Loading</div>
}
else
{
    @ChildContent
}
@code {

    [Parameter] public RenderFragment ChildContent { get; set; }

    [Parameter] public object Value { get; set; }

}

This gist is to replace all that boilderplate code like this:

@if(someValue is null) 
{
  <p>Loading..</p>
} 
else 
{
 // show actual content
}
@code {
  SomeClass someValue;
}

Instead you can write

<Loading Value="someValue">
  <p>Content goes here</p>
</Loading>