我使用 FFImageLoading 库CachedImage带有用于圆形图像的圆形变换的控件:

I use the FFImageLoading libraries CachedImage control with a circle transformation for circle images:

<ffimageloading:CachedImage  
        DownsampleToViewSize="true"
        Aspect="AspectFill"
        Source = "{Binding Image}"
        LoadingPlaceholder = "{Binding DefaultImage}"
        ErrorPlaceholder = "{Binding DefaultImage}">
    <ffimageloading:CachedImage.Transformations>
        <fftransformations:CircleTransformation />
    </ffimageloading:CachedImage.Transformations>
</ffimageloading:CachedImage>