这样引用为什么不行？？

Question

有一个类：
}
 public class SSEventArgs : EventArgs
    {
        // Fields
        private string _description;
        private string _eventName;
        private string _moduleName;
        private DateTime _time;        // Methods
        public SSEventArgs(string eventName, string moduleName)
        {
            this._eventName = eventName;
            this._moduleName = moduleName;
            DateTime now = DateTime.Now;
            this._time = now;
        }        public SSEventArgs(string eventName, string moduleName, string description)
        {
            this._eventName = eventName;
            this._moduleName = moduleName;
            this._description = description;
            DateTime now = DateTime.Now;
            this._time = now;
        }        public override string ToString()
        {
            string str = null;
            str = string.Format("'{0}' occurred in '{1}'.", this._eventName, this._moduleName);
            if (!string.IsNullOrEmpty(this._description))
            {
                str = str + this._description;
            }
            return str;
        }        // Properties
        public string Description
        {
            get
            {
                return this._description;
            }
            set
            {
                this._description = value;
            }
        }        public string EventName
        {
            get
            {
                return this._eventName;
            }
        }        public string ModuleName
        {
            get
            {
                return this._moduleName;
            }
            set
            {
                this._moduleName = value;
            }
        }        public DateTime Time
        {
            get
            {
                return this._time;
            }
        }    }
    public sealed class SSIOChangeEventArgs : SSEventArgs
    {
        // Fields
        private string _channelName;
        private object _channelValue;        // Methods
        public SSIOChangeEventArgs(string eventName, string moduleName): base(eventName, moduleName)
        {
            ChannelName = _channelName;
            ChannelValue = _channelValue;
        }        public override string ToString()
        {
            return string.Format("'{0}'.IOChannel Name = '{1}'; IOChannel Value = '{2}'.", base.ToString(), this._channelName, this._channelValue);
        }        // Properties
        public string ChannelName
        {
            get
            {
                return this._channelName;
            }
            set
            {
                this._channelName = value;
            }
        }        public object ChannelValue
        {
            get
            {
                return this._channelValue;
            }
            set
            {
                this._channelValue = value;
            }
        }
    }
引用代码是：        private void OnIOChannelChange(string channelName, string channelType, object channelValue)
        {
            EventTest.SSIOChangeEventArgs e = new EventTest.SSIOChangeEventArgs("IOChannelChangeEvent", "IOServerAgent")
            {ChannelName = channelName,ChannelValue = channelValue };
        }为什么这样引用不行呢？

Answer 1

ChannelName ChannelValue 都是什么，哪里声明了

Answer 2

    public class SSEventArgs : EventArgs
    {
        // Fields
        private string _description;
        private string _eventName;
        private string _moduleName;
        private DateTime _time;        // Methods
        public SSEventArgs(string eventName, string moduleName)
        {
            _eventName = eventName;
            _moduleName = moduleName;
            DateTime now = DateTime.Now;
            _time = now;
        }        public SSEventArgs(string eventName, string moduleName, string description)
        {
            _eventName = eventName;
            _moduleName = moduleName;
            _description = description;
            DateTime now = DateTime.Now;
            _time = now;
        }        public override string ToString()
        {
            var str = string.Format("'{0}' occurred in '{1}'.", this._eventName, this._moduleName);
            if (!string.IsNullOrEmpty(this._description))
            {
                str = str + _description;
            }
            return str;
        }        // Properties
        public string Description
        {
            get
            {
                return _description;
            }
            set
            {
                _description = value;
            }
        }        public string EventName
        {
            get
            {
                return _eventName;
            }
        }        public string ModuleName
        {
            get
            {
                return _moduleName;
            }
            set
            {
                _moduleName = value;
            }
        }        public DateTime Time
        {
            get
            {
                return _time;
            }
        }    }
    public sealed class SSIOChangeEventArgs : SSEventArgs
    {
        // Fields
        private string _channelName;
        private object _channelValue;        // Methods
        public SSIOChangeEventArgs(string eventName, string moduleName)
            : base(eventName, moduleName)
        {
            ChannelName = _channelName;
            ChannelValue = _channelValue;
        }        public override string ToString()
        {
            return string.Format("'{0}'.IOChannel Name = '{1}'; IOChannel Value = '{2}'.", base.ToString(), this._channelName, this._channelValue);
        }        // Properties
        public string ChannelName
        {
            get
            {
                return _channelName;
            }
            set
            {
                _channelName = value;
            }
        }        public object ChannelValue
        {
            get
            {
                return _channelValue;
            }
            set
            {
                _channelValue = value;
            }
        }
    }        private void OnIOChannelChange(string channelName, string channelType, object channelValue)
        {
            EventTest.SSIOChangeEventArgs e = new EventTest.SSIOChangeEventArgs("IOChannelChangeEvent", "IOServerAgent") { ChannelName = channelName, ChannelValue = channelValue };
        }

Answer 3

你的VS版本是多少? 是可以这样使用 但是得看VS版本。

Answer 4

这样写是行的
        private void OnIOChannelChange(string channelName, string channelType, object channelValue)
        {
            var e = new SSIOChangeEventArgs("IOChannelChangeEvent", "IOServerAgent") { ChannelName = channelName, ChannelValue = channelValue };
        }

Answer 5

这样写是行的
        private void OnIOChannelChange(string channelName, string channelType, object channelValue)
        {
            var e = new SSIOChangeEventArgs("IOChannelChangeEvent", "IOServerAgent") { ChannelName = channelName, ChannelValue = channelValue };
        }