Question

I have a double values in C# and I want to put them into the database.

Problem is that I have tried all the formats in the database and still I am getting a number to sign DOT.
For example if I have a number 45.548 it will be saved in database as 45
When I am debugging the code I can see that value is really sent as 45.548.

Here is my code so you can see what might went wrong:

MySqlConnection con = null;
MySqlCommand cmd = null;

con = new MySqlConnection("server=localhost;database=Data_GPS;uid=root;pwd=******");
con.Open();
cmd = new MySqlCommand("insert into Data values (null, ?Parname , ?Parname2, ?Parname3);", con);
cmd.Parameters.AddWithValue("?Parname", deciLat);
cmd.Parameters.AddWithValue("?Parname2", deciLon);
cmd.Parameters.AddWithValue("?Parname3", time);
cmd.ExecuteNonQuery();

con.Close();

I have tried to change format in the database with float, double, decimal, varchar and still I am not getting the right number.

Thank you

EDIT:

This is how I fill my decimal values:

string[] arrLon = Lon.Split(new char[] { '°', '"' }, StringSplitOptions.RemoveEmptyEntries);
double dblLon = double.Parse(arrLon[0]) + double.Parse(arrLon[1], new System.Globalization.NumberFormatInfo()) / 60;
double deciLon = arrLon[2] == "E" ? dblLon : -dblLon;
string[] arrLat = Lat.Split(new char[] { '°', '"' }, StringSplitOptions.RemoveEmptyEntries);
double dblLat = double.Parse(arrLat[0]) + double.Parse(arrLat[1], new System.Globalization.NumberFormatInfo()) / 60;
double deciLat = arrLat[2] == "N" ? dblLat : -dblLat;

Answer 1

This should work:

  using (MySqlConnection con = new MySqlConnection("server=localhost;database=Data_GPS;uid=root;pwd=******")
  {
        con.Open();
        using (MySqlCommand  cmd = new MySqlCommand("insert into Data values (null, @Parname , @Parname2, @Parname3);", con)
        {
            // change MySqlDbType.Double to reflect the real data type in the table.
            cmd.Parameters.Add("@Parname", MySqlDbType.Double).Value = deciLat;
            cmd.Parameters.Add("@Parname2", MySqlDbType.Double).Value = deciLon;
            cmd.Parameters.Add("@Parname3", MySqlDbType.DateTime).Value = time;
            cmd.ExecuteNonQuery();
        }
  }

always put your Connections and Commands inside using to make sure that you free all objects without the need of explicit Dispose() command.