Change paasword form

Question

i am developing a windows application. for which i have to make a change password form. i am using MS-access as my database. my table name is tbluserlogin and the fields are: userId, userRole, userStatus, userPwd, userConpwd. using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace Project { public partial class frmchangepassword : Form { public frmchangepassword() { InitializeComponent(); } int userId; string userName; int userStatus; string userRole; string userPwd; string userConPwd; public void clearfields() { txtnewpwd.Text = ""; txtoldpwd.Text = ""; txtconfirmpwd.Text = ""; txtoldpwd.Focus(); } private void frmchangepassword_Load(object sender, EventArgs e) { GetValue(); } private void GetValue() { ConnectionClass l_ConnectionClass = new ConnectionClass(); DataSet l_changepwd = l_ConnectionClass.FetchDataInDataSet("select * from tbluserlogin where userName = '" + txtusername.Text.ToLower().Trim() + "' and userPwd = '" + txtpwd.Text.Trim() + "'"); } private void btnupdate_Click(object sender, EventArgs e) { } } } please help me out with this.