MigraDoc RTF Document does not print Images (png) about pdfsharp HOT 7 CLOSED

The "BASE64" notation does not currently work with the RTF Renderer. This is a different issue we are researching.

At the moment I'd recommend storing the image in a temporary file if you have to download it from the web.

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After a little code change, images in RTF work.
Code page 1252 is not UTF8, so remove this:

//public class MyEncodingProvider : EncodingProvider
//{
//    public override Encoding GetEncoding(int codepage)
//    {
//        if (codepage == 1252)
//        {
//            // Return your custom encoding object here
//            return Encoding.UTF8;
//        }
//        return null;
//    }

//    public override Encoding GetEncoding(string name)
//    {
//        // Implement this method if you want to support encoding names
//        return null;
//    }
//}

Register the encoder for code page 1252 (this should be included in the RTF Renderer soon, but with 6.0.0-preview-2 it must be called explicitly).

        //Encoding.RegisterProvider(new MyEncodingProvider());
        System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);

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I tried to register the provider in the startup and also before I create the RTF document, but it still did not work. Now the image ins, not there and also not strange symbols.
Do I have to config the runtime env or the project file in a specific way?

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I do not know about any special requirements. We just use .NET 6 and I simply call RegisterProvider early in the code before creating the RTF Renderer.

The issue submission template worked with the changes shown above.

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Ok I found the issue, maybe you can help me to solve this as well.
I want to download the image first and add the byte array to the document.
When I create the pdf document everything, but the rtf document does not contain the image.

I am using the following code to download the image and create a byte array.

public static async Task<string> GetImage(string imageName, CancellationToken cancellationToken = default)
    {
        var httpClient = new HttpClient();
        var url = $"{BaseUrl}/nehl-it-icon.png";
        var response = await httpClient.GetAsync(
            url,
            cancellationToken);

        if (!response.IsSuccessStatusCode)
        {
            return string.Empty;
        }

        return LoadImageFromBytes(await response.Content.ReadAsByteArrayAsync(cancellationToken));
    }

    protected static string LoadImageFromBytes(byte[] cData)
    {
        return $"base64:{Convert.ToBase64String(cData)}";
    }

var imageFilePath = await GetImage("Generali.png");

var image = document.LastSection.Headers.Primary.AddImage(imageFilePath);

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Ok, thanks for the feedback!
Is there an open issue, where I can watch it?

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BASE64 support for RTF Renderer has been fixed.
Fix will be included with version 6.0.0-preview-3 coming soon (May or June 2023 or so).

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