/// <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;
}
}