C#利用結(jié)構(gòu)體對固定格式數(shù)據(jù)進(jìn)行解析的方法

using System.Runtime.InteropServices;
[StructLayoutAttribute(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 1)]
 public struct InfoStruct
 {
  [MarshalAs(UnmanagedType.U1, SizeConst = 1)]
  public byte SlotNum;
  [MarshalAs(UnmanagedType.U4,SizeConst =4)]
  public UInt32 ModuleID;
  [MarshalAs(UnmanagedType.ByValArray,SizeConst =32)]
  public char[] DeviceName;
  [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
  public char[] HardwareNum;
  [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
  public char[] HardwareVersion;
  [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
  public char[] SoftwareVersion;
  [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
  public char[] SoftwareDate;
 }

public static class StructHelper
 {
  /// <summary>
  /// byte數(shù)組轉(zhuǎn)目標(biāo)結(jié)構(gòu)體
  /// </summary>
  /// <param name="bytes">byte數(shù)組</param>
  /// <param name="type">目標(biāo)結(jié)構(gòu)體類型</param>
  /// <returns>目標(biāo)結(jié)構(gòu)體</returns>
  public static T ByteToStuct<T>(byte[] DataBuff_) where T:struct
  {
   Type t = typeof(T);
   //得到結(jié)構(gòu)體大小
   int size = Marshal.SizeOf(t);
   //數(shù)組長度小于結(jié)構(gòu)體大小
   if (size > DataBuff_.Length)
   {
    return default(T);
   }

   //分配結(jié)構(gòu)體大小的內(nèi)存空間
   IntPtr structPtr = Marshal.AllocHGlobal(size);
   //將byte數(shù)組cpoy到分配好的內(nèi)存空間內(nèi)
   Marshal.Copy(DataBuff_, 0, structPtr, size);
   //將內(nèi)存空間轉(zhuǎn)換為目標(biāo)結(jié)構(gòu)體
   T obj = (T)Marshal.PtrToStructure(structPtr, t);
   //釋放內(nèi)存空間
   Marshal.FreeHGlobal(structPtr);
   return obj;
  }
  /// <summary>
  /// 結(jié)構(gòu)體轉(zhuǎn)byte數(shù)組
  /// </summary>
  /// <param name="objstuct">結(jié)構(gòu)體</param>
  /// <returns>byte數(shù)組</returns>
  public static byte[] StuctToByte(object objstuct)
  {
   //得到結(jié)構(gòu)體大小
   int size = Marshal.SizeOf(objstuct);
   //創(chuàng)建byte數(shù)組
   byte[] bytes = new byte[size];
   //分配結(jié)構(gòu)體大小的空間
   IntPtr structPtr = Marshal.AllocHGlobal(size);
   //將結(jié)構(gòu)體copy到分配好的內(nèi)存空間內(nèi)
   Marshal.StructureToPtr(objstuct, structPtr, false);
   //從內(nèi)存空間copy到byte數(shù)組
   Marshal.Copy(structPtr, bytes, 0, size);
   //釋放內(nèi)存空間
   Marshal.FreeHGlobal(structPtr);
   return bytes;
  }
 }

static void Main(string[] args)
  {
   try
   {
    InfoStruct Info;
    Info.HardwareNum = "1.0.0".ToCharArray();
    Info.HardwareVersion = "ABC1234567".ToCharArray();
    Info.DeviceName = "Device Name1".ToCharArray();
    Info.ModuleID = 0x10000001;
    Info.SlotNum = 1;
    Info.SoftwareDate = "2018/1/22".ToCharArray();
    Info.SoftwareVersion = "V1.0.0".ToCharArray();
    var b = StructHelper.StuctToByte(Info);
    Console.WriteLine("Struct length:"+b.Length);
    Console.WriteLine("Hex:"+ByteToolsHelper.ByteArrayToHexString(b," "));
    var s = StructHelper.ByteToStuct<InfoStruct>(b);
    Console.WriteLine("Name:"+s.DeviceName.GetString());
   }
   catch (Exception ex)
   {
    Console.WriteLine(ex.Message);
   }
   Console.ReadKey();

  }

public static char[] GetFixLengthChar(this string s,int length)
  {
   char[] chaVal = new char[length];
   Array.Copy(s.PadRight(length, '\0').ToCharArray(), chaVal, length);
   return chaVal;
  }
  public static string GetString(this char[] cc)
  {
   return GetString(cc,true);
  }
  public static string GetString(this char[] cc,bool isTrimEnd)
  {
   if (isTrimEnd)
   {
    return new string(cc).TrimEnd('\0');
   }
   else
   {
    return new string(cc);
   }
  }