使用aws lambda c＃裁剪图像（使用Java解决）

Im trying to create an AWS Lambda Function in C# to crop an image which is stored in the S3 bucket. Once cropped, the new image need to be pushed to another bucket. And this function has to be invoked manually using the AWS Lambda Client. As im a beginner and there is not much tutorials available on the web, please help me on this.Im trying to create an AWS Lambda Function in C