C# 中读取byte[]转化成数字

望天hous2024-08-05 16:53

读取网络字节流时候，使用BinaryReader的ReadInt32()方法时候发生了预期外的结果，查阅了微软文档发现是小端( )模式问题，可以通过System.Net.IPAddress.HostToNetworkOrder或BinaryPrimitives.ReadInt32BigEndian 方式来解决

以下示例代码，提供参考

csharp 复制代码

var sendNu = 1102;
var sendBuf = BitConverter.GetBytes(sendNu);
if (BitConverter.IsLittleEndian)
{
   var  sendBufByBig = sendBuf.Reverse().ToArray();
}
var bufByLittle = new byte[] { 77, 4, 0, 0 };
var bufByBig = bufByLittle.Reverse().ToArray();
var originalNu = BitConverter.ToInt32(bufByBig.Reverse().ToArray());

using var fs = new MemoryStream(bufByLittle);
var binReader = new BinaryReader(fs);
var orgVal = binReader.ReadUInt32();

var orgVal1 = BinaryPrimitives.ReadInt32BigEndian(bufByBig);