首先撰寫 golang 程序 exportgo.go： ~~~ package main import "C" import "fmt" //export PrintBye func PrintBye() { fmt.Println("From DLL: Bye!") } //export Sum func Sum(a int, b int) int { return a + b; } func main() { // Need a main function to make CGO compile package as C shared library } ~~~ 編譯成 DLL 文件： ~~~ go build -buildmode=c-shared -o exportgo.dll exportgo.go ~~~ 編譯后得到 exportgo.dll 和 exportgo.h 兩個文件。 參考 exportgo.h 文件中的函數定義，撰寫 C# 文件 importgo.cs： ~~~ using System; using System.Runtime.InteropServices; namespace HelloWorld { class Hello { [DllImport("exportgo.dll", EntryPoint="PrintBye")] static extern void PrintBye(); [DllImport("exportgo.dll", EntryPoint="Sum")] static extern int Sum(int a, int b); static void Main() { Console.WriteLine("Hello World!"); PrintBye(); Console.WriteLine(Sum(33, 22)); } } } ~~~ 編譯 CS 文件得到 exe ~~~ csc importgo.cs ~~~ 將 exe 和 dll 放在同一目錄下，運行。 ~~~ >importgo.exe Hello World! From DLL: Bye! 55 ~~~