Live Chat Icon For mobile
Live Chat Icon

How to check if RenderFragment is empty?

Platform: Blazor| Category : Components, General

RenderFragment is a delegate that renders a UI segment. So, it does not have an Empty state. It can be null, which is equivalent to empty in the sense that it will produce no rendered output. In the following example, see that the RenderFragments are in a null state or contain a value.

@if (childContent != null) 
    <p>RenderFragment is null</p> 
<button class="btn btn-primary" @onclick="OnButtonClick">Click</button> @*RenderFragment is null by default, click the button to update the RenderFragment*@ 
@code { 
    private string textContent = "Welcome to your new Blazor app."; 
    private RenderFragment childContent { get; set; } 
    private void OnButtonClick() 
        childContent = BuildRenderTree => BuildRenderTree.AddContent(1, textContent); 

Share with

Related FAQs

Couldn't find the FAQs you're looking for?

Please submit your question and answer.