Display min, max and average records in textbox in c#
Here I will show you how to Display min, max and average records in textbox in c#.
Here I will show you how to Display min, max and average records in textbox in c#.
Program
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;
namespace Display_min_max_avg_records_in_textbox
{
public partial class Form1 : Form
{
string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"];
OleDbCommand com;
OleDbDataAdapter oledbda;
DataSet ds = new DataSet();
string str;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
OleDbConnection con = new OleDbConnection(ConnectionString);
con.Open();
str = "select * from student";
com = new OleDbCommand(str, con);
oledbda = new OleDbDataAdapter(com);
ds = new DataSet();
oledbda.Fill(ds, "student");
dataGridView1.DataSource = ds;
dataGridView1.DataMember = "student";
con.Close();
}
private void button1_Click(object sender, EventArgs e)
{
OleDbConnection con = new OleDbConnection(ConnectionString);
con.Open();
str = "select max(smarks)from student";
com = new OleDbCommand(str, con);
textBox1.Text = com.ExecuteScalar().ToString();
con.Close();
}
private void button2_Click(object sender, EventArgs e)
{
OleDbConnection con = new OleDbConnection(ConnectionString);
con.Open();
str = "select min(smarks)from student";
com = new OleDbCommand(str, con);
textBox2.Text = com.ExecuteScalar().ToString();
con.Close();
}
private void button3_Click(object sender, EventArgs e)
{
OleDbConnection con = new OleDbConnection(ConnectionString);
con.Open();
str = "select avg(smarks)from student";
com = new OleDbCommand(str, con);
textBox3.Text = com.ExecuteScalar().ToString();
con.Close();
}
}
}
Output
Thanks