C# WebApi生成SVG图

public HttpResponseMessage CreateUserLogo(string realName)
{
            var httpResponseMessage = new HttpResponseMessage(HttpStatusCode.OK)
            {
                Content = new StringContent(
                $"<svg xmlns="http://www.w3.org/2000/svg" version="1.1" id="Layer_1" x="0px" y="0px" viewBox="0 0 500 500" enable-background="new 0 0 500 500" xml:space="preserve" height="500px" width="500px"><rect width="500" height="500" fill="#A8F0A8"/><text x="50%" y="50%" dy=".3em" font-family="sans-serif" font-size="220px" text-anchor="middle" fill="#330000">{realName}</text></svg>", Encoding.UTF8)
            };
            httpResponseMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("image/svg+xml");
            httpResponseMessage.Content.Headers.ContentType.CharSet = "UTF-8";
            return httpResponseMessage;
}

效果图