string result = await context.CallActivityAsync("MyActivityFunction", "inputParameter");
int num1 = 5; int num2 = 10; int result = await context.CallActivityAsyncThis example calls an activity function named "AddNumbersActivity" with two integer input parameters num1 and num2. The inputs are passed as an anonymous object. The result of the activity function call is returned as an integer. The CallActivityAsync method is part of the Microsoft.Azure.WebJobs.Extensions.DurableTask package.("AddNumbersActivity", new { num1, num2 });