用于截取字节数组SubByte的C#二进制字节数组操作函数

用于截取字节数组SubByte的C#二进制字节数组操作函数2014-10-13

/// <summary>/// 截取字节数组/// </summary>/// <param name="srcBytes">要截取的字节数组</param>/// <param name="startIndex">开始截取位置的索引</param>/// <param name="length">要截取的字节长度</param>/// <returns>截取后的字节数组</returns>public byte[] SubByte（byte[] srcBytes, int startIndex, int length）{System.IO.MemoryStream bufferStream = new System.IO.MemoryStream（）;byte[] returnByte = new byte[] { };if （srcBytes == null） { return returnByte; }if （startIndex < 0） { startIndex = 0; }if （startIndex < srcBytes.Length）{if （length < 1 || length > srcBytes.Length - startIndex） { length = srcBytes.Length - startIndex; }bufferStream.Write（srcBytes, startIndex, length）;returnByte = bufferStream.ToArray（）;bufferStream.SetLength（0）;bufferStream.Position = 0;}bufferStream.Close（）;bufferStream.Dispose（）;return returnByte;}

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