Change Datatable Column Date Format

Question

I'm working with a txt files, I must insert that data in mysql database. So I get that info in a Datatable , then I can get that data in my gridview and I must insert that data in database. I can do that, but I have problems with date columns.

For example, When I try to insert, If I have this date in datagridview: 12/01/2018 no problem, but if I have 17/01/2018 not insert, I have manually changed and I've probed it.

this is read txt:

string LogAutoriz_fileName = Server.MapPath("~/Files/") + User.Identity.Name.ToString() + "_" + Path.GetFileName(fup_LogAutoriz_File.PostedFile.FileName);
    fup_LogAutoriz_File.SaveAs(LogAutoriz_fileName);

    DataTable dt = new DataTable();

    List<string[]> list = new List<string[]>();
    int maxItem = 0;
    using (System.IO.TextReader tr = File.OpenText(LogAutoriz_fileName))
    {
        string line;
        while ((line = tr.ReadLine()) != null)
        {
            string[] items = line.Trim().Split('    ');
            if (maxItem <= items.Count())
            {
                maxItem = items.Count();
            }
            list.Add(items);
        }


        //Crear las columnas del DataTable de Datos
        dt.Columns.Add("Comprobante", typeof(string));
        dt.Columns.Add("Serie_Comprobante", typeof(string));
        dt.Columns.Add("Ruc_Emisor", typeof(string));
        dt.Columns.Add("RazonSoc_Emisor", typeof(string));
        dt.Columns.Add("Fecha_Emision", typeof(string));
        dt.Columns.Add("Fecha_Autoriz", typeof(string));
        dt.Columns.Add("Tipo_Emision", typeof(string));
        dt.Columns.Add("Ident_Receptor", typeof(string));
        dt.Columns.Add("Basura", typeof(string));
        dt.Columns.Add("Clave_Acceso", typeof(string));
        dt.Columns.Add("Numero_Autor", typeof(string));
        dt.Columns.Add("Importe_Total", typeof(string));



        foreach (var items in list)
        {
            dt.Rows.Add(items);
        }


        //cargar al grid
        this.gvwAutorizaciones.DataSource = dt;
        this.gvwAutorizaciones.DataBind();

And this is for insert every gridview record in data base:

try
{
    using (MySqlConnection sqlCon = new MySqlConnection(conn))
    {
        using (MySqlCommand cmd = new MySqlCommand())
        {
            cmd.CommandText = "Insert into autorizaciones " +
                "(comprobante, Serie_Comprobante, Ruc_Emisor, RazonSoc_Emisor, " +
                "Fecha_Emision, Fecha_Autorizacion, " +
                "Tipo_Emision, Ident_Receptor, Clave_Acceso, Numero_Autorizacion) " +
                "values(" +
                "'" + comprob + "', " +
                "'" + serComprob + "', " +
                "'" + rucEmisor + "', " +
                "'" + razSocEmi + "', " +
                "'" + FecEmisor + "', " +
                "'" + FecAutoriz + "', " +
                "'" + tipoEmision + "', " +
                "'" + identRecep + "', " +
                "'" + claveAcceso + "', " +
                "'" + numAutoriz + "')";
            cmd.Connection = sqlCon;
            sqlCon.Open();
            cmd.ExecuteNonQuery();
            sqlCon.Close();
        }
    }
}

catch (MySqlException ex)
{
}

I call this in a foreach and I can insert records, but for dates, I have that problem.

Is there any way to format the column datatable, for example "yyyy-mm-dd"?

If please anyone can help me,

thanks a lot best regards

Answer 1

I suppose, you should change the type of your column because of it is a type of string.

DateTime newDate= DateTime.Parse(stringDate); ---> You can use this to convert string to date,

or

string s = "13/5/2014 12:00:00 AM";    
var date = DateTime.ParseExact(s, "dd/M/yyyy hh:mm:ss tt",
                                   CultureInfo.InvariantCulture); 

You can use above code block to change the format of the date time.

Also you can determine your data table column type before you create it like,

DataColumn colDateTime = new DataColumn("DateTimeCol");   
colDateTime.DataType = System.Type.GetType("System.DateTime");

All I mean, I think you have type problem so I hope this helps.

Answer 2

12/01/2018 no problem, but if I have 17/01/2018 not insert

Your actual value is in DD/MM/YYYY but insert mysql taking the format as MM/DD/YYYY. So you can format that particular column value to MM/DD/YYYY. I am considering identRecep is a Datetime field.

try
 {
   using (MySqlConnection sqlCon = new MySqlConnection(conn))
     {
       using (MySqlCommand cmd = new MySqlCommand())
        {
          cmd.CommandText = "Insert into autorizaciones " +
          "(comprobante, Serie_Comprobante, Ruc_Emisor, RazonSoc_Emisor, " +
          "Fecha_Emision, Fecha_Autorizacion, " +
          "Tipo_Emision, Ident_Receptor, Clave_Acceso, Numero_Autorizacion) " + 
 "values(@comprob,@serComprob,@rucEmisor,@razSocEmi,@FecEmisor,@FecAutoriz,@tipoEmision,@identRecep,@claveAcceso,@numAutoriz)";
     cmd.Parameters.AddWithValue("@comprob", comprob);
     cmd.Parameters.AddWithValue("@serComprob", serComprob);
     cmd.Parameters.AddWithValue("@razSocEmi", razSocEmi);
     cmd.Parameters.AddWithValue("@FecEmisor", FecEmisor);
     cmd.Parameters.AddWithValue("@FecAutoriz", FecAutoriz);
     cmd.Parameters.AddWithValue("@tipoEmision", tipoEmision);
     cmd.Parameters.AddWithValue("@identRecep", DateTime.Parse(identRecep,"MM/DD/YYYY"));
     cmd.Parameters.AddWithValue("@claveAcceso", claveAcceso);
     cmd.Parameters.AddWithValue("@numAutoriz", numAutoriz);
     cmd.Connection = sqlCon;
     sqlCon.Open();
     cmd.ExecuteNonQuery();
     sqlCon.Close();
  }
 }
}
catch (MySqlException ex)
    {
    }

Answer 3

Thanks a lot Rojalin, I changed this part of my code:

private void RegistrarAutorizacion()
{
    try
    {
        foreach (GridViewRow grd_Row in this.gvwAutorizaciones.Rows)
        {
            string Comprobante = Convert.ToString(grd_Row.Cells[0].Text.Replace(" ", ""));
            string SerieComprobante = Convert.ToString(grd_Row.Cells[1].Text.Replace(" ", ""));
            string RucEmisor = Convert.ToString(grd_Row.Cells[2].Text.Replace(" ", ""));
            string RazSocEmisor = Convert.ToString(grd_Row.Cells[3].Text.Replace(" ", ""));
            //DateTime FechaEmision = Convert.ToDateTime(grd_Row.Cells[4].Text.Replace(" ", ""));
            //DateTime FechaAutorizacion = Convert.ToDateTime(grd_Row.Cells[5].Text.Replace(" ", ""));
            var FechaEmision = DateTime.ParseExact(
                grd_Row.Cells[4].Text.Replace(" ", ""), 
                "dd/M/yyyy", CultureInfo.InvariantCulture); 
            var FechaAutorizacion = DateTime.ParseExact(
                grd_Row.Cells[5].Text.Remove(10,9),
                "dd/M/yyyy", CultureInfo.InvariantCulture); //file text has time, but for my process is not important the hour


            string TipoEmision = Convert.ToString(grd_Row.Cells[6].Text.Replace(" ", ""));
            string IdentidadRecepetor = Convert.ToString(grd_Row.Cells[7].Text.Replace(" ", ""));
            string ClaveAcceso = Convert.ToString(grd_Row.Cells[9].Text.Replace(" ", ""));
            string NumeroAutorizacion = Convert.ToString(grd_Row.Cells[10].Text.Replace(" ", ""));


            autorizDL.RegistrarAutorizacion(
                Comprobante, SerieComprobante, RucEmisor, RazSocEmisor,
                Convert.ToDateTime(FechaEmision),
                Convert.ToDateTime(FechaAutorizacion),
                TipoEmision, IdentidadRecepetor, ClaveAcceso, NumeroAutorizacion);

        }
    }
    catch (System.FormatException sfex) { }
    //catch (Exception ex) { }

}

and I can insert new database entries. thank you again.

best regards