public void T12D6()
{
ClosureDelegate test = CreateDelegateInstance();
test();
Console.ReadKey();
}
//模拟的Main方法
public void Main()
{
ClosureDelegate one = DoClosureDelegateInstance();
one();
/*
* 进行do...方法时会先调用two委托实例,方法执行完毕后count变量应该会被销毁.但是还有匿名对象的引用。所以
* 它的生命周期被延长。
*/
}
private static void Mathod()
{
string outVariable = "外部变量";
string capturedVarible = "被捕获的外部变量";
ClosureDelegate cosure = delegate
{
string localvariable = "匿名方法局部变量";
Console.WriteLine(capturedVarible + " " + localvariable);
};
cosure();
}
private static ClosureDelegate CreateDelegateInstance()
{
int count = 1;
ClosureDelegate closuredelegate = delegate
{
Console.WriteLine(count);
count++;
};
closuredelegate();
return(closuredelegate);
}
//闭包延长变量的生命周期
private static ClosureDelegate DoClosureDelegateInstance()
{
//这里定义了外部变量
int count = 1;
ClosureDelegate two = () =>
{//匿名方法
Console.WriteLine(count);
count++;
};
//调用委托
two();
return(two);
}
static void Main(string[] args)
{
ClosureDelegate test = CreateDelegateInstance();
// 此时会回调匿名方法输出count的值
test();
/*
* 1
* 2
*/
Console.Read();
}
// 闭包延长变量的生命周期
private static ClosureDelegate CreateDelegateInstance()
{
// 外部变量
int count = 1;
ClosureDelegate closuredelegate = delegate
{
Console.WriteLine(count);
// 捕捉了外部变量
count++;
};
// 调用委托
closuredelegate();
return(closuredelegate);
}
// 闭包方法
private static void closureMethod()
{
// outVariable和capturedVariable对于匿名方法而言都是外部变量
string outVariable = "外部变量";
// 而capturedVariable是被匿名方法捕获的外部变量
string capturedVariable = "被捕获的外部变量";
ClosureDelegate closuredelegate = delegate
{
// localvariable是匿名方法中局部变量
string localvariable = "匿名方法局部变量";
// 引用capturedVariable变量
Console.WriteLine(capturedVariable + " " + localvariable);
};
// 调用委托
closuredelegate();
}
