C# And MySQL - Search Using TextChanged Event

C# - How To Use TextChanged To Search And Display Data In DatagridView

                                                                                                                                         

In This C# Tutorial We Will See How To Search Data In MySQL On The TextChanged Event And Show This Data On Datagridview Using CSharp Programming Language And MySQL Database.
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Source Code :

using MySql.Data.MySqlClient;
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;

namespace Csharp_And_MySQL
{
    public partial class TextChanged_Search : Form
    {
        public TextChanged_Search()
        {
            InitializeComponent();
        }

        MySqlConnection connection = new MySqlConnection("datasource=localhost;port=3306;Initial Catalog='test_db';username=root;password=");

        private void TextChanged_Search_Load(object sender, EventArgs e)
        {
            searchData("");
        }

        public void searchData(string valueToFind)
        {

            string searchQuery = "SELECT * FROM users WHERE CONCAT(fname,lname) LIKE '%"+valueToFind+"%'";
            MySqlDataAdapter adapter = new MySqlDataAdapter(searchQuery, connection);
            DataTable table = new DataTable();
            adapter.Fill(table);
            dataGridView_Data.DataSource = table;

        }

        private void textBox1_Search_TextChanged(object sender, EventArgs e)
        {
            searchData(textBox1_Search.Text);
        }
     
    }
}

=> OutPut :


c# textchanged

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