SkiaSharp | platform 2D graphics API for .NET platforms | Form library

I'm trying to draw a set of images with SkiaSharp, convert them to byte array, and send to HttpContext stream. For some reason, every image is being displayed in the browser only when the next image has been rendered and sent to the HTTP stream.

• After rendering the 1st image, browser shows empty white area, no image
• After rendering the 2nd image, browser shows 1st image
• After rendering the 3rd image, browser shows 2nd image, and so on

Here is the Web API controller. Uncommenting second drawShapes call will make it work, but I would like to understand why image rendering is delayed. Maybe I just don't call some important method, like Flush or something similar?

Also, this is not an ASP issue, because I tried rendering images with System.Drawing.Common and images were rendered in real time without delay.

Does anybody know what is missing in this method?

I'm working with Xamarin in the part of Xamarin.Forms i need to convert a file ("image.png") to a Bitmap because when project run its enter in "break mode" and show me this message "Java.Lang.IllegalArgumentException: 'Failed to decode image. The provided image must be a Bitmap.'". So i tried to convert the file in many ways like:

1_ Using methods from System.Drawing.Bitmap but it's show this exception "This operation is not supported in this platform"

2_ Cannot use Android.Graphics because i'm working in xamarin.forms not in xamarin.android.

3_ I tried to convert the "image.png" into a base64 or byte[] array and then into a bitmap but the problem is the same like in first problem because to convert from byte[] array or base64 to a Bitmap i have use methods from System.Drawing.Bitmap.

4_ I tried using the library SkiaSharp but i don't have success because i don't found so much information about how to convert .png to SKBitmap and then convert SKBitmap to Bitmap (even i don't know if this is possible).

5_ Finally i converted "image.png" to a "image.bmp" with an app and use the file .bmp in my project but it doesn't work too.

the "image.png" i have to save in a string variable, well that's the idea.

If you have a solution with SkiaSharp o whatever i will glad

EDIT

here is a part of my code, i just save in a variable the image

I'm trying to align a logo in the middle of a SKBitmap.

Here is my code:

I have a solution with two projects: a .NET Standard and an iOS project which references the .NET Standard project.

If the .NET Standard does not reference System.Memory nuget package (specifically versions 4.5.3 or 4.5.4), everything works fine. If I add a reference to System.Memory in the .NET Standard project, then my iOS project crashes with a MissingMethodException.

Note: This problem is iOS only, it does not reproduce on Xamarin Android.

How can I solve this problem?

My project is using the TopTen.RichTextKit library ( https://www.nuget.org/packages/Topten.RichTextKit/ ) to perform text block measurement. When I run my code on iOS, I get the following crash when calling TextBlock.MeasuredHeight:

Recently I have installed Xamarin.CommunityToolkit (Version: 1.3.1) for implementing the BadgeView. Also updated the Xamarin.Forms (Version: 5.0.0.2291) to the latest version. After that, I am facing some weird issues on my project. After the login the app is not opening the home page, scroll view is not working, collectionview scroll is not working, even some icon taps are also not firing.

All these features are working fine before installing Xamarin.CommunityToolkit. I have only installed CommunityToolkit and XF latest version. Are there any other packages or initialization required for the proper working of CommunityToolkit?

Other Nuget Packages in the Project

How can I open a window and draw to it with SkiaSharp (without using winforms, wpf or anything like that)? I've tried using SFML.Net instead of SKIA but it lacks a lot of features (rounded rectangle, shadow, gradient).

I am a bit new to WPF. I wanted to make my image scrollable when I scale up the image. This is my XAML code.

In Skiasharp, I have a transformation matrix which I apply on the canvas to move a path and follow the displacement of the mouse. Presently, I compute a transformMatrix from the mouse coordinates and evreything works fine :

I need to use skiasharp in xamarin forms or android. I found two nugets. Which of them should i use?