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Index

@page "/"
@inject HttpClient Http

@code {

    string loaderUrl = "data:image/svg+xml;base64,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";
    string imageJpgDataURL = string.Empty;
    string imagePngDataURL = string.Empty;
    string svgDataURL = string.Empty;

    async Task GetSvg()
    {
        svgDataURL = loaderUrl;
        var svgHtml = "<svg width=\"300\" height=\"300\" xmlns=\"http://www.w3.org/2000/svg\"><linearGradient id=\"lg\"><stop offset=\"0%\" stop-color=\"#79ff72\"/><stop offset=\"100%\" stop-color=\"#daf1ff\"/></linearGradient><rect x=\"2\" y=\"2\" width=\"296\" height=\"296\" style=\"fill:url(#lg);stroke:#bdb2ff;stroke-width:2\"/><text x=\"50%\" y=\"50%\" font-size=\"18\" text-anchor=\"middle\" alignment-baseline=\"middle\" font-family=\"monospace, sans-serif\" fill=\"#bdb2ff\">300&#215;300</text></svg>";
        var imageBytes = System.Text.Encoding.UTF8.GetBytes(svgHtml);
        var imageSrc = Convert.ToBase64String(imageBytes);
        svgDataURL = string.Format("data:image/svg+xml;base64,{0}", imageSrc);
    }

     async Task GetPngImage()
     {
        imagePngDataURL = loaderUrl;
        var url = "https://dummyimage.com/300x300/5e355e/626594.png&text=Test";
        var imageBytes = await Http.GetByteArrayAsync(url);
        var imageSrc = Convert.ToBase64String(imageBytes);
        imagePngDataURL = string.Format("data:image/png;base64,{0}", imageSrc);
     }

    async Task GetJpegImage()
    {        
        imageJpgDataURL = loaderUrl;
        var url = "https://i.picsum.photos/id/494/200/300.jpg?hmac=YdLwRbrTAzFXaAJcsj854mgNuS5jqYM8bcjCzSrSDRM";
        var imageBytes = await Http.GetByteArrayAsync(url);
        var imageSrc = Convert.ToBase64String(imageBytes);
        imageJpgDataURL = string.Format("data:image/jpeg;base64,{0}", imageSrc);
    }
}

<button type="button" @onclick="() => GetJpegImage()">Load jpeg image</button>
<button type="button" @onclick="() => GetPngImage()">Load png image</button>
<button type="button" @onclick="() => GetSvg()">Load svg</button>

<div class="images">
    <img class="image" src="@imageJpgDataURL" />
    <img class="image" src="@imagePngDataURL" />
    <img class="image" src="@svgDataURL" />
</div>

namespace BlazorFiddleProject
{
    using Microsoft.AspNetCore.Components.Builder;
    using Microsoft.Extensions.DependencyInjection;


    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
        }

        public void Configure(IComponentsApplicationBuilder app)
        {
            app.AddComponent<App>("app");
        }
    }
}

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width">
    <title>BlazorFiddleProject</title>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
	
	<script src="_content/MatBlazor/dist/matBlazor.js"></script>

    <style>
        app { }

        .images {
            display: flex;
            height: 200px;
             background: black;
        }

        .image {
            width: 200px;
            padding: 10px;
        }
    </style>

    <script type="text/javascript">
    </script>
</head>
<body>
<app>Loading...</app>

<script src="_framework/blazor.webassembly.js"></script>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</body>
</html>

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