關於Stream的Read方法

一次作到一個關於使用DataContractJsonSerializer類的表述。其中須要用到MemoryStream數組讀取。發生數組溢出錯誤，這裏特記錄一筆：

public static class JsonSerializer<T> where T:new()
    {
        public static string Serialize(T obj)
        {
            string json = null;
            using (MemoryStream ms = new MemoryStream())
            {
                try
                {
                    DataContractJsonSerializer jsonS = new DataContractJsonSerializer(typeof(T));
                    jsonS.WriteObject(ms, obj);
                    ms.Position = 0;
                    // 總的要讀入的字節數數組
                    byte[] bytes = new byte[ms.Length]; // 讀取數據的起始點
                    int offset = 0; // 判斷起始點+偏移量的數據必須在數組總的範圍內
                    while (offset+10<ms.Length) { // 嘗試讀取後10個數據
                        ms.Read(bytes, offset, 10); // 起始點+10
                        offset += 10; } //剩餘的數組所有讀完
                    if (offset + 10 >= ms.Length) { ms.Read(bytes, offset, (int)(ms.Length - offset)); }

                    json = Encoding.UTF8.GetString(bytes);
                }
                catch (Exception ex)
                {

                }
            }
            return json;
        }

        public static T Deserialize(string json)
        {
            T returnValue = default(T);

            using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))
            {
                ms.Position = 0;
                DataContractJsonSerializer ds = new DataContractJsonSerializer(typeof(T));
                returnValue = (T)ds.ReadObject(ms);
            }
            return returnValue;
        }
    }