c#基础系列之值类型和引用类型的深入理解

运行结果：

引用类型耗时:205
值类型耗时:152

可见初始化速度值类型是优于引用类型的，也可能是引用类型引发了GC导致。

作为方法参数传递，代码如下：

static void Main(string[] args)
 {
 Console.WriteLine("test start");
 long totalCount = 1000000000;
 Stopwatch sw = new Stopwatch();
 sw.Start();

 TestRef tempRef = new TestRef() { Id = 1, Name = "test" , Name2="r3rewfdsafdsa", Name3="fsrewfdsafdsafdsa", Name4="fdafdasfdsafdsa", Name5="432tretsfds", Name6="fdsafdasfdasfd" };
 for (int i = 0; i < totalCount; i++)
 {
  TestR(tempRef);
 }
 sw.Stop();
 Console.WriteLine($"引用类型耗时:{sw.ElapsedMilliseconds}");
 sw.Reset();
 sw.Start();
 TestVal tempVal = new TestVal() { Id = 1, Name = "test", Name2 = "r3rewfdsafdsa", Name3 = "fsrewfdsafdsafdsa", Name4 = "fdafdasfdsafdsa", Name5 = "432tretsfds", Name6 = "fdsafdasfdasfd" };
 for (int i = 0; i < totalCount; i++)
 {
  TestV(tempVal);
 }
 sw.Stop();
 Console.WriteLine($"值类型耗时:{sw.ElapsedMilliseconds}");
 Console.Read();
 }
 static void TestR(TestRef r)
 {
 return;
 }
 static void TestV(TestVal v)
 {
 return;
 }

 class TestRef
 {
 public int Id { get; set; }
 public string Name { get; set; }
 public string Name2 { get; set; }
 public string Name3 { get; set; }
 public string Name4 { get; set; }
 public string Name5 { get; set; }
 public string Name6 { get; set; }
 }
 struct TestVal
 {
 public int Id { get; set; }
 public string Name { get; set; }
 public string Name2 { get; set; }
 public string Name3 { get; set; }
 public string Name4 { get; set; }
 public string Name5 { get; set; }
 public string Name6 { get; set; }
 }