using System;

using System.IO;

using System.Collections.Generic;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace Test

{

    class Program

    {

        static void Main(string[] args)

        {

            uint a=0x1c1244AA;

            ushort b1,b2;

            //uint b = 1;

            //           FileStream fs = new FileStream("dd.bin", FileMode.OpenOrCreate)

            //           using(var bw = new Binarywriter(fs))

            //           {

            //              bw.Write(a);

            //           }

            using(FileStream fs = new FileStream("dd.bin", FileMode.Open))

            {

                using(BinaryReader br = new BinaryReader(fs))

                {

                    b1 = br.ReadUInt16();

                    b2 = br.ReadUInt16();

                }

            }

            Console.WriteLine("0x{0}",b1.ToString("x"));

            Console.WriteLine("0x{0}",b2.ToString("x"));

            uint a1 = a >> 8 ;

            a1 = a1 & 0xFF ;

            Console.WriteLine("a1=0x{0}",a1.ToString("X8"));

            uint a2 = a >> 6 ;

            a2 &= 0x1F ;

            Console.WriteLine("a2=0x{0}",a2.ToString("X8"));

            Console.WriteLine("a2={0}",a2);

        }

    }

}

namespace HeaderTest

{

    class Program

    {

        static void Main(string[] args)

        {

            string filename = "D:\\Documents\\";

            using(var fs = new FileStream(filename,FileMode.Open))

            {

                using(var br = new BinaryReader(fs))

                {

                    while (fs.Position < fs.Length)

                    {

                        uint sync = br.ReadUInt32();

                        if(sync 1 = SYNC)

                        {

                            fs.Seek(-3,SeekOrigin.Current);

                            continue;

                        }

                        ushort msgid = br.ReadUInt16();

                        fs.Seek(2,SeekOrigin.Current);

                        ushort length = br.ReadUInt16();

                        fs.Seek(4,SeekOrigin.Current);

                        ushort week = br.ReadUInt16();

                        uint sec = br.ReadUInt32();

                        //fs.Seek(8+length+4,SeekOrigin.Current);

                        fs.Seek(8,SeekOrigin.Current);

                        if( msgid ==43)

                        {

                            uint obs = br.ReadUInt32();

                            for(int i = 0;i < obs;i++)

                            {

                                fs.Seek(40,SeekOrigin.Current);

                                uint tr_status = br.ReadUInt32();

                                uint sat_sys = (tr_status >> 16) & 0x07 ;

                                uint grouping = (tr_status >> 20) & 0x01 ;

                                uint signal = (tr_status >> 21) & 0x1F ;

                            }

                        }

                        else

                        {

                            fs.Seek(length + 4,SeekOrigin.Current);

                        }

                    }

                }

            }

        }

    }

    public partial class Form

    {

        public MainForm()

        {

            InitializeComponent();

        }

        private void ButtonSelect_Click(object sender,EventArgs e)

        {

            var ofd = new OpenFileDialog();

            var result = ofd.ShowDialog();

            if(result == DialogResult.OK)

            {

                dataPath = ofd.FileName;

                textBoxData.Text = dataPath;

                //ReadFile();

            }

        }

     }

}

​

​

​

​