How to write/read data from object class to txt c#

Question

I have a class which I need to save to a file. The class looks like this

class GLogInfo
{
    public int tmno;
    public int smno, seno;
    public int vmode;
    public int yr, mon, day, hr, min, sec;

    public string photo { get { return (tmno == -1) ? "No Photo" : Convert.ToString(tmno); } }
    public int enroll { get { return seno; } }
    public int machine { get { return smno; } }

    public string verify_mode
    {
        get
        {
            string attend_status = "";
            switch ((vmode >> 8) & 0xFF)
            {
                case 0: attend_status = "_DutyOn"; break;
                case 1: attend_status = "_DutyOff"; break;

            }

            string antipass = "";
            switch ((vmode >> 16) & 0xFFFF)
            {
                case 1: antipass = "(AP_In)"; break;
                case 2: antipass = "(AP_Out)"; break;
            }

            int vm = vmode & 0xFF;
            string str = "--";
            switch (vm)
            {
                case 1: str = "Fp"; break;

                case 7: str = "FP+Card+Pwd"; break;

            }

            if ((1 <= vm && vm <= 7) ||
                (30 <= vm && vm <= 34) ||
                (51 <= vm && vm <= 53) ||
                (101 <= vm && vm <= 103) ||
                (151 <= vm && vm <= 153))
            {
                str = str + attend_status;
            }

            str += antipass;

            return str;
        }
    }

    public string logtime { get { return string.Format("{0:D4}-{1:D2}-{2:D2} {3:D2}:{4:D2}:{5:D2}", yr, mon, day, hr, min, sec); } }
}

populating the class with data from a device(access control device) using a dll code

           while (true)
           {

                GLogInfo gi = new GLogInfo();
                vRet = sbxpc.SBXPCDLL.GetGeneralLogData(Program.gMachineNumber,
                                                out gi.tmno,
                                                out gi.seno,
                                                out gi.smno,
                                                out gi.vmode,
                                                out gi.yr,
                                                out gi.mon,
                                                out gi.day,
                                                out gi.hr,
                                                out gi.min,
                                                out gi.sec);
                if (!vRet) break;
                glogs_.Add(gi);

            }

With this I can bind the data to DataGridView without any problem. But I need to also get all the data to a file. either txt or any format. I tried to use serialization which I couldn't since I'm not that expert in C#. I need help as to how to write/read the data to a file. Also I though maybe there is a way to read the data from DataGridView to file but I cant do that either :). I'm a leaner.

EylM · Accepted Answer · 2019-08-15 10:26:01Z

2

You could use Newtonsoft to serialize the class to a file.

If you have an instance of GLogInfo object (myObj), the code would look like:

File.WriteAllText(@"c:\temp\somefile.json", JsonConvert.SerializeObject(myObj));

This would serialize all public properties in your class that have 'get' accessors.

If you wish to ignore some of the properties, you could add [JsonIgnore].

answered Aug 15, 2019 at 10:26

EylM

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1 Comment

A-Majeed Over a year ago

Thanks a lot. I'm able to get the data to json file. I also tried with text but it gives a json format in txt format(obviously it has to. just messing up with it).

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