用C语言实现VB中的语句#

new FooBar().With( fb=> {
    fb.Foo = 10;
    fb.Bar = fb.Foo.ToString();
} );

// ... somewhere else ...
public static void With<T>( this T target, Action<T> action ) {
    action( target );
}

要指定不带返回类型的匿名方法,请使用 Action<T> Func<T, TResult> :

new FooBar().With(new Action<FooBar>(instance =>
{
    instance.Foo = 10;
    instance.Bar;
}));

更新

扩展方法:

public static void With<T>(this T input, Action<T> action)
{
    action(input);
}

new FooBar().With(fb =>
{
    fb.Foo = 10;
    fb.Bar = "some string";
});

Action<FooBar>

new FooBar().With<FooBar>(new Action<FooBar>(fb =>
{
    fb.Foo = 10;
    fb.Bar = "some string";
}));

当您询问如何编写扩展名时,这里是

public static void With<T>(this T target, Action<T> action) where T : class
{
   action(target);
}

就这样怎么样

return new FooBar{ Foo=10; };