c# 构造函数错误 "CS1061" "x does not contain a definition for y"

Question

public class KeyEvent {
        private Keys[] keys = null;
        public delegate void eventmethod();
        private eventmethod em;
        private object[] args;
        private bool thrown = false;
        public bool repeat = true;

        public bool isKey(Keys key) {
            if (keys == null) return true;
            foreach (Keys k in keys) {
                if (key == k) return true;
            }
            return false;
        }

        public void ThrowEvent() {
            if (!repeat && thrown) return;
            em.DynamicInvoke(args);
            this.thrown = true;
        }

        public KeyEvent(eventmethod D) {
            em = D;
        }
        public KeyEvent(Keys[] keys, eventmethod D) {
            this.keys = keys;
            this.KeyEvent(D);
        }
        public KeyEvent(eventmethod D, object[] args) {
            this.args = args;
            this.KeyEvent(D);
        }
        public KeyEvent(Keys[] keys, eventmethod D, object[] args) {
            this.args = args;
            this.KeyEvent(keys, D);
        }
    }

嘿，伙计们；这个类不会编译。我得到的错误是:

'BLBGameBase.KeyEvent' does not contain a definition for 'KeyEvent' and no extension method 'KeyEvent' accepting a first argument of type 'BLBGameBase.KeyEvent' could be found (are you missing a using directive or an assembly reference?)

无论如何，调用“this.KeyEvent(D)”或类似代码的三行都会抛出此错误。 我不明白该错误，因为它争辩说没有方法接受“KeyEvent”的第一个参数，但我并没有尝试使用 KeyEvent 调用方法...谢谢。

Answer 1

要从一个构造函数调用另一个构造函数，请使用以下语法:

public KeyEvent(Keys[] keys, eventmethod D)
    : this(D)
{
    this.keys = keys;
}

就您的代码而言，它正在尝试调用名为 KeyEvent 的常规方法(非构造函数)。