Web-Development-with-Blazor-Second-Edition/Chapter09/MyBlog/Components/Pages/Index.razor

@page "/"
@using Data.Models.Interfaces
@using Data.Models
@inject IBlogApi _api
@using Markdig;

<Virtualize ItemsProvider="LoadPosts" Context="p">
    <article>
        <h2>@p.Title</h2>
        @((MarkupString)Markdig.Markdown.ToHtml(new string(p.Text.Take(100).ToArray()), pipeline))
        <a href="/Post/@p.Id">Read more</a>
    </article>
</Virtualize>




@code {
    MarkdownPipeline pipeline;
    protected override Task OnInitializedAsync()
    {
        pipeline = new MarkdownPipelineBuilder()
                    .UseEmojiAndSmiley()
                    .Build();
        return base.OnInitializedAsync();
    }

    public int totalBlogposts { get; set; }
    private async ValueTask<ItemsProviderResult<BlogPost>> LoadPosts(ItemsProviderRequest request)
    {
        if (totalBlogposts == 0)
        {
            totalBlogposts = await _api.GetBlogPostCountAsync();
        }
        var numblogposts = Math.Min(request.Count, totalBlogposts - request.StartIndex);
        var blogposts = await _api.GetBlogPostsAsync(numblogposts, request.StartIndex);
        return new ItemsProviderResult<BlogPost>(blogposts, totalBlogposts);
    }



}