using System using System Collections Generic using System ComponentMo

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using MySql.Data.MySqlClient;
namespace MySQL_Sdelki
{
public partial class Form1 : Form
{
string connection = "datasource=localhost;" + "database=dogovors;" + "username=root;" + "password=";
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string con = connection; //= "datasource=localhost;" + "database=dogovors;" + "username=root;" + "password=";
string comand = "select * from tablename";
DataTable dt = new DataTable();
using (MySqlConnection con = new MySqlConnection())
{
con.ConnectionString = connection;
MySqlCommand com = new MySqlCommand(comand, con);
try
{
con.Open();
using (MySqlDataReader dr = com.ExecuteReader())
{
if (dr.HasRows)
{
dt.Load(dr);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
con.Close();
}
dataGridView1.DataSource = dt;
}
}
}