Calling AWS Lambda functions from LINQPad

csharp January 03, 2023
  • Open LINQPad
  • Add reference to JSON.NET
  • Use this C# statement to call a Lambda function in AWS:
 var lambdaUrl = "https://<base>.amazonaws.com/default/<api>";

var message = "some message";
var data = new { message };
var payloadJson = JsonConvert.SerializeObject(data);

var client = new HttpClient();
var request = new HttpRequestMessage(HttpMethod.Post, lambdaUrl);
request.Content = new StringContent(payloadJson, Encoding.UTF8, "application/json");
var response = await client.SendAsync(request);

Console.WriteLine(await response.Content.ReadAsStringAsync());

In order to create/configure the lambda function, follow these steps:

  • Login to AWS
  • Search for Lambda
  • Create new function
    • Select existing permission lambda_execution
  • Go to Configuration
    • Create New trigger of type API Gateway
    • Set Security to None