.NET加水印/验证码的NuGet包

给图片加水印 using (var imageStream = File.OpenRead(@"..\..\..\..\sample-images\src.png")) using (var outputStream = File.OpenWrite(@"..\..\..\..\sample-images\watermark-test1.png")) { WatermarkTool.WatermarkText( imageStream, outputStream, watermark: "Watermark here", font: "T