关于序列化，这段代码中，为什么要info.GetInt32()?

protected GraphicsList(SerializationInfo info, StreamingContext context)

        {

            graphicsList = new DrawList();

 

            int n = info.GetInt32(entryCount);

            string typeName;

            DrawObject drawObject;

 

            for (int i = 0; i < n; i++)

            {

                typeName = info.GetString(String.Format(CultureInfo.InvariantCulture,"{0}{1}",entryType, i));

 

                drawObject = (DrawObject)Assembly.GetExecutingAssembly().CreateInstance(

                    typeName);

 

                drawObject.LoadFromStream(info, i);

 

                graphicsList.Add(drawObject);

            }

 

        }

------解决方案--------------------
GetInt32 从 SerializationInfo 存储区中检索一个 32 位有符号整数值。