#if NET20

using System;
using System.Collections.Generic;
using System.Text;

namespace System
{

    /// <summary>封装一个方法,该方法不具有参数且不返回值。</summary>
    public delegate void Action();

    /// <summary>封装一个方法,该方法不具有参数且不返回值。</summary>
    public delegate void Action<T1, T2>(T1 arg1, T2 arg2);

    /// <summary>封装一个方法,该方法不具有参数且不返回值。</summary>
    public delegate void Action<T1, T2, T3>(T1 arg1, T2 arg2, T3 arg3);

    /// <summary>封装一个方法,该方法不具有参数且不返回值。</summary>
    public delegate void Action<T1, T2, T3, T4>(T1 arg1, T2 arg2, T3 arg3, T4 arg4);

    /// <summary>封装一个方法,该方法不具有参数且不返回值。</summary>
    public delegate void Action<T1, T2, T3, T4, T5>(T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5);

    /// <summary>封装一个方法,该方法不具有参数且不返回值。</summary>
    public delegate void Action<T1, T2, T3, T4, T5, T6>(T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6);

    /// <summary>封装一个方法,该方法不具有参数且不返回值。</summary>
    public delegate void Action<T1, T2, T3, T4, T5, T6, T7>(T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6, T7 arg7);

    /// <summary>封装一个方法,该方法不具有参数且不返回值。</summary>
    public delegate void Action<T1, T2, T3, T4, T5, T6, T7, T8>(T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6, T7 arg7, T8 arg8);

}

#endif