Change password according to Emp id

Satyapriyanayak
Posted by Satyapriyanayak under C# category on | Points: 40 | Views : 1041
We will know how to Change password according to empid.We use 3 label controls (Emp id,New password,Confirm password),3 textboxes and a button.When user enters his/her empid , New password and Confirm password ,the old password is changed to new one.

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 Forgot_password
{
public partial class Form1 : Form
{
string ConnectionString = System.Configuration.ConfigurationSettings.AppSettings["dsn"];
OleDbCommand com;
string str;
byte up = 0;

public Form1()
{
InitializeComponent();
}

private void btn_change_Click(object sender, EventArgs e)
{
OleDbConnection con = new OleDbConnection(ConnectionString);


if (textBox3.Text != textBox2.Text)
{
MessageBox.Show("confirm password not matching with new passsword");
textBox3.Focus();
return;
}

try
{
con = new OleDbConnection(ConnectionString);
con.Open();
str = "select * from login";
com = new OleDbCommand(str, con);
OleDbDataReader reader = com.ExecuteReader();

while (reader.Read())
{
if (textBox1.Text == reader["empid"].ToString())
{
up = 1;
}
}

if (up == 1)
{
str = "update login set newpwd='" + textBox3.Text + "' where empid='" + textBox1.Text + "'";
com = new OleDbCommand(str, con);
com.ExecuteNonQuery();
MessageBox.Show("Password changed");
}
else
{
MessageBox.Show("Please enter correct empid and Newpassword");
textBox1.Focus();
}
reader.Close();
con.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}

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