Generate an image from an HTML code/file in .NET Core 2.x Console Application?

Question

I've currently a problem with the NReco.ImageGenerator in a .NET Core 2.x console application that I can't get an image because of course, the console application is not web service at all.

My question now is: Is there a way to use a somehow web service in a console application so I can generate an image from an HTML code/file or is there any other solution to generate an image from HTML code/file in a .NET Core 2.x console application?

Edit

It works on .NET Standard but not on .NET Core.

var html = string.Format("<h1>Hello World!</h1>");
var converter = new HtmlToImageConverter // Exception happens here
        {
            Width = 250,
            Height = 70
        };
var bytes = converter.GenerateImage(html, NReco.ImageGenerator.ImageFormat.Png);

Exception:

System.TypeLoadException: Could not load type 'System.Web.HttpContext' from assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
at NReco.ImageGenerator.HtmlToImageConverter..ctor()
at SESL.Modules.SESL.User.UserImage() in E:\Source\SESL-Discord\SESL\Modules\SESL\User.cs:line 36

I am a bit confused, but the console application can call a web service or a web request and return either a stream or byte[] of data for you to handle however you want. Could you provide more information? Like some code? — Greg
– Greg, Commented Nov 1, 2018 at 20:46
I'm guessing the OP might not realize that a console application can call a web service or a web request and read the response stream. Hence my reply below. Personally, I'd just use System.Net.Http.HttpClient. — paulsm4
– paulsm4, Commented Nov 1, 2018 at 21:30
@Greg I added a code block and the exception. @paulsm4 I would do the same but the problem is, it's not depended on System.Net.Http.HttpClient but System.Web — OnlyOneCookie
– OnlyOneCookie, Commented Nov 2, 2018 at 1:48
Just to clarify, you want to execute the NReco.ImageGenerator from within the console application itself, ie. the generated is hosted by the console application. You don't want to have a web service host the generator and have the console application connect to it via HTTP Client. — Adrian Sanguineti
– Adrian Sanguineti, Commented Nov 2, 2018 at 2:07

OnlyOneCookie · Accepted Answer · 2018-11-02 03:18:27Z

1

I found out, that the NReco.ImageGenerator does not support .NET Core and for the .NET Core I need to pay the LT version. But I discovered another NuGet Package which does somehow the same but I need to draw the image by myself. Therefore the alternative is Magick.NET

answered Nov 2, 2018 at 3:18

OnlyOneCookie

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