Table of Contents

Class AppImageTagHelper

Namespace
Cuemon.AspNetCore.Razor.TagHelpers
Assembly
Cuemon.AspNetCore.Razor.TagHelpers.dll

Provides an implementation targeting <img> elements that supports ICacheBusting versioning of a static image placed on a location outside (but tied to) your application. This class cannot be inherited.

[HtmlTargetElement("app-img")]
public sealed class AppImageTagHelper : ImageTagHelper<AppTagHelperOptions>, ITagHelper, ITagHelperComponent, IConfigurable<AppTagHelperOptions>
Inheritance
AppImageTagHelper
Implements
Inherited Members

Examples

The following example demonstrates how to create AppImageTagHelper with application-scoped options.

using System;
using Cuemon.AspNetCore.Razor.TagHelpers;
using Microsoft.Extensions.Options;

namespace MyApp.Examples;

public static class AppImageTagHelperExample
{
    public static void Demonstrate()
    {
        var options = Options.Create(CreateOptions());

        var tagHelper = new AppImageTagHelper(options);

        Console.WriteLine(FormatAssetUrl(options.Value, "images/logo.svg"));
        Console.WriteLine(tagHelper.GetType().Name);
    }

    private static AppTagHelperOptions CreateOptions() => new()
    {
        Scheme = ProtocolUriScheme.Relative,
        BaseUrl = "static.cuemon.net"
    };

    private static string FormatAssetUrl(AppTagHelperOptions options, string asset)
    {
        return options.GetFormattedBaseUrl() + asset;
    }
}

Constructors

AppImageTagHelper(IOptions<AppTagHelperOptions>, ICacheBusting)

Initializes a new instance of the AppImageTagHelper class.

public AppImageTagHelper(IOptions<AppTagHelperOptions> setup, ICacheBusting cacheBusting = null)

Parameters

setup IOptions<AppTagHelperOptions>

The AppTagHelperOptions which need to be configured.

cacheBusting ICacheBusting

An optional object implementing the ICacheBusting interface.

See Also

ImageTagHelper<TOptions>
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