I have Read data from different text files now how to write it in a database table?

I have written a code to extract data from different text files. I am reading only 3 values from all the different text files. Now i want to write them in database table.

please tell me how to do that through c# coding???

private void button1_Click(object sender, EventArgs e)
    {
        string to_date = dateTimePicker2.Value.ToString("yyyy/MM/dd");
        Console.WriteLine("a");
       string[] name = new string[18] {"005","006","008","015","017","019","024","032","034","035","037","038","039","041","049","050","051","014"};

        for (int i = 0; i < name.Length; i++)
          {   conairdata(to_date, name[i]);   }
            label9.Text = " Completed";
            label9.Refresh();
            Console.WriteLine("d");
    }

    public void conairdata(string to_date , string name)
    {
        Console.WriteLine("e");
        string path = "H:\\Su\\air\\reporting\\mdata"+name+".rpt";
        // nofcol and nofrows of our tile array
        int nofcol = 0;
        int nofrows = File.ReadLines(path).Count();
        StreamReader sReader = new StreamReader(path);
        string line = sReader.ReadLine();
        string[] tileNo = line.Split(',');
        nofcol = tileNo.Count();
        // Set Minimum to 1 to represent the first file being copied.
        progressBar1.Minimum = 1;
        // Set Maximum to the total number of Users created.
        progressBar1.Maximum = nofrows;
        // Set the initial value of the ProgressBar.
        progressBar1.Value = 1;
        // Set the Step property to a value of 1 to represent each user is being created.
        progressBar1.Step = 1;
        sReader.Close();
        Console.WriteLine("f");
        // Re-initialising sReader
        sReader = new StreamReader(path);
        DateTime datum, dt1,dt2, dt3;
        for (int y = 1; y < nofrows; y++)      // read number of rows
        {
            line = sReader.ReadLine();
            tileNo = line.Split(',');
            string k = tileNo[19];
            string l = tileNo[3];
            string s = tileNo[0];

            try
            {
                string x = s.Substring(s.IndexOf("(") + 1, (s.IndexOf(")") - s.IndexOf("(") - 1)).Replace(".", "-");
                 datum = Convert.ToDateTime(x);      // convert extracted date to DateTime format

             dt1 = DateTime.Parse(Convert.ToString(datum));

             logger(dt1, l, k);
            } 
            catch(Exception)
            {   }
       if (y != nofrows)
            {    progressBar1.PerformStep();    }
        } 
        label9.Text = " Now processing... Please wait";
            label9.Refresh();
            sReader.Close();
    }