Represents the method that will handle a ReadEntity event, which occurs when an operation reads data from the request buffer.
When a request-level module has registered for the RQ_READ_ENTITY event notification, IIS will call the module's OnReadEntity method when an operation reads data from the request buffer.
Request-level modules can register for the PostReadEntity event notification by registering for RQ_READ_ENTITY in the module's RegisterModule function.
The following example demonstrates how to create a request-level HTTP module that registers for the RQ_READ_ENTITY event notification. When IIS reads data from the request buffer, it will call the example module's OnReadEntity method. A simple HTML or ASP.NET page that performs a post will cause the example code to run.