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Building Lambda functions with C#

The following sections explain how common programming patterns and core concepts apply when authoring Lambda function code in C#.

AWS Lambda provides the following libraries for C# functions:

  • Amazon.Lambda.Core – This library provides a static Lambda logger, serialization interfaces and a context object. The Context object (AWS Lambda context object in C#) provides runtime information about your Lambda function.
  • **Amazon.Lambda.Serialization.Json ** – This is an implementation of the serialization interface in Amazon.Lambda.Core.
  • **Amazon.Lambda.Logging.AspNetCore ** – This provides a library for logging from ASP.NET.
  • Event objects (POCOs) for several AWS services, including:
    • **Amazon.Lambda.APIGatewayEvents **
    • **Amazon.Lambda.CognitoEvents **
    • **Amazon.Lambda.ConfigEvents **
    • **Amazon.Lambda.DynamoDBEvents **
    • **Amazon.Lambda.KinesisEvents **
    • **Amazon.Lambda.S3Events **
    • **Amazon.Lambda.SQSEvents **
    • **Amazon.Lambda.SNSEvents **

These packages are available at Nuget packages.

.NET runtimes

Name Identifier Operating system
.NET Core 3.1 dotnetcore3.1 Amazon Linux 2
.NET Core 2.1 dotnetcore2.1 Amazon Linux

Note
To get started with application development in your local environment, deploy one of the sample applications available in this guide's GitHub repository.
blank-csharp – A C# function that shows the use of Lambda's .NET libraries, logging, environment variables, AWS X-Ray tracing, unit tests, and the AWS SDK. ec2-spot – A function that manages spot instance requests in Amazon EC2.

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