Wednesday, December 26, 2018

C# How to Link Combo-box with Database values with MySQL database- 04


In this tutorial I show you how link combo box with database value. here I use MySQL database load value. In previous tutorial I show how to connect with MySQL database. You can download all source code regarding this tutorial.








c# form query and code




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 ComboLord
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            cmbLord();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }


        private void cmbLord()
        {
       
        try
            {


   string server = "localhost";
                string database = "test";
                string uid = "root";
                string password = "";
                string connectionString;
                connectionString = "SERVER=" + server + ";" + "DATABASE=" + database + ";" + "UID=" + uid + ";" + "PASSWORD=" + password + ";";
                MySqlConnection con = new MySqlConnection(connectionString);


                string sql = "SELECT `id` FROM `one`";
                con.Open();
                MySqlCommand sCommand = new MySqlCommand(sql, con);
                MySqlDataReader reder = sCommand.ExecuteReader();
                while (reder.Read())
                {

                    cmblord.Items.Add(reder.GetString("id"));

                }
                con.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
       
       
        }



    }




}

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