Asynchronous Operations in "Illustrated Guide to C#"

Apr 26, 2024#开发杂记119

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The use of BeginInvoke function for asynchronous programming in the book "C#图解教程" 5th edition led to a PlatformNotSupportedException error, as BeginInvoke and EndInvoke functions are no longer supported in the latest .NET platform, which now uses Task-based Asynchronous Pattern (TAP) for asynchronous and parallel programming.

When reading the 21.9 Other Asynchronous Programming Patterns in the "C# Illustrated Tutorial" 5th edition, an error message was encountered when using the BeginInvoke function as shown in the example code:

Unhandled exception. System.PlatformNotSupportedException: Operation is not supported on this platform.

After consulting the documentation, starting from .NET Framework 4, the Task Parallel Library provides a new model for asynchronous and parallel programming, namely the Task-based Asynchronous Pattern (TAP). On the latest .NET platform, the BeginInvoke and EndInvoke functions are no longer supported. This is noted for reference.

References:

Migrating Delegate.BeginInvoke Calls for .NET Core