How to populate gridview with mysql?

Problem :

I just know how to populate gridview with asp:SqlDataSource
But I have a column of TemplateField in my gridview, when I need modify my SQL for alter grid content, I lose my TemplateField, so I think learn populate my gridview with C#
Someone can teach me or give me some tutorial?

Solution :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using MySql.Data.Common;
using MySql.Data.MySqlClient;
using System.Data.SqlClient;
using System.Windows.Forms;
using System.Data;

public partial class viewAdmin : System.Web.UI.Page
    String MyConString = "SERVER=localhost;" +
                "DATABASE=databasename;" +
                "UID=root;" +
protected void Page_Load(object sender, EventArgs e)

        MySqlConnection conn = new MySqlConnection(MyConString);
        MySqlCommand cmd = new MySqlCommand("SELECT * FROM tablename;", conn);
        DataTable dataTable = new DataTable();
        MySqlDataAdapter da = new MySqlDataAdapter(cmd);


        GridVIew.DataSource = dataTable;


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