C# - How To Fill Data Into DataGridView Depending On A Combobox Selected value
In This C# Tutorial We Will See How To Bind Data Into A DataGridView
Based On A Combobox Selected value In CSharp Programming Language And MySQL Database .
Source 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 Csharp_And_MySQL
{
public partial class Csharp_MySQL_datagridview_depending_combobox_value : Form
{
MySqlConnection con = new MySqlConnection("datasource=localhost;port=3306;Initial Catalog ='project';username=root;password=");
MySqlCommand command;
MySqlDataAdapter adapter;
DataTable table;
public Csharp_MySQL_datagridview_depending_combobox_value()
{
InitializeComponent();
}
private void Csharp_MySQL_datagridview_depending_combobox_value_Load(object sender, EventArgs e)
{
string query = "SELECT `CAT_ID`, `CAT_NAME` FROM `categories`";
comboBox_Categories.DataSource = getData(query);
comboBox_Categories.DisplayMember = "CAT_NAME";
comboBox_Categories.ValueMember = "CAT_ID";
comboBox_Categories_SelectedIndexChanged(null, null);
}
public DataTable getData(string query)
{
command = new MySqlCommand(query, con);
adapter = new MySqlDataAdapter(command);
table = new DataTable();
adapter.Fill(table);
return table;
}
private void comboBox_Categories_SelectedIndexChanged(object sender, EventArgs e)
{
int val;
Int32.TryParse(comboBox_Categories.SelectedValue.ToString(), out val);
string query = "SELECT `ID_PRO`, `PRO_NAME`, `QTE_IN_STOCK`, `PRICE`, `ID_CAT` FROM `products` WHERE `ID_CAT` = " + val;
dataGridView_Products.DataSource = getData(query);
}
}
}
=> OUTPUT:
