How To Execute MySQL Database Count Max Min Avg In C#
In This C# Tutorial We Will See How To Use MySQL ExecuteScalar Function To:
- execute count command to get database table's records count.
- execute min command to get database minimum value.
- execute max command to get database maximum value.
- execute avg command to get database average value.
In Csharp Programming Language And Visual Studio Editor.
- execute count command to get database table's records count.
- execute min command to get database minimum value.
- execute max command to get database maximum value.
- execute avg command to get database average value.
In Csharp Programming Language And Visual Studio Editor.
Project 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_Tutorials
{
public partial class MySQL_ExecuteScalar : Form
{
public MySQL_ExecuteScalar()
{
InitializeComponent();
}
// mysql connection
MySqlConnection connection = new MySqlConnection("datasource=localhost;port=3306;Initial Catalog='mydb';username=root;password=");
// button count
private void buttonCount_Click(object sender, EventArgs e)
{
MySqlCommand count_cmd = new MySqlCommand("SELECT COUNT(*) FROM dgv_data",connection);
connection.Open();
textBox1.Text = count_cmd.ExecuteScalar().ToString();
connection.Close();
}
// button max
private void buttonMax_Click(object sender, EventArgs e)
{
MySqlCommand max_cmd = new MySqlCommand("SELECT MAX(age) FROM dgv_data", connection);
connection.Open();
textBox1.Text = max_cmd.ExecuteScalar().ToString();
connection.Close();
}
// button min
private void buttonMin_Click(object sender, EventArgs e)
{
MySqlCommand min_cmd = new MySqlCommand("SELECT MIN(*) FROM dgv_data", connection);
connection.Open();
textBox1.Text = min_cmd.ExecuteScalar().ToString();
connection.Close();
}
// button avg
private void buttonAvg_Click(object sender, EventArgs e)
{
MySqlCommand avg_cmd = new MySqlCommand("SELECT AVG(age) FROM dgv_data", connection);
connection.Open();
textBox1.Text = avg_cmd.ExecuteScalar().ToString();
connection.Close();
}
}
}
///////////////OUTPUT:
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