login.aspx.cs

its a website on property dealing made in c# and .net framework.. the database is missing though.

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void TextBox1_TextChanged(object sender, EventArgs e)
    {

    }
    protected void TextBox2_TextChanged(object sender, EventArgs e)
    {

    }
    protected void TextBox3_TextChanged(object sender, EventArgs e)
    {

    }
    
    protected void Button1_Click(object sender, EventArgs e)
    {
        if(TextBox1.Text=="")
			{
				Label6.Text="  userid is missing";
			}
			else
				if(TextBox2.Text=="")
			{
					Label6.Text="  Password is missing";
			}
			else
			{

				SqlConnection con=new SqlConnection("Data Source=.;Initial Catalog=epropertydb;Integrated Security=True");
				con.Open();
				SqlCommand cmd=new SqlCommand();
				cmd.Connection=con;
				cmd.CommandText="select*from userdetails";
				SqlDataReader dr;
				dr=cmd.ExecuteReader();
				while(dr.Read()==true)
				{
					if(TextBox1.Text==dr[0].ToString())
					{
						if(TextBox2.Text==dr[1].ToString())

						{
                            Session["uid"] = TextBox1.Text;
                            Response.Redirect("his.aspx");
							
						}
						else
						{
							Label6.Text="password error";
						}
					}
					else
					{
						Label6.Text="Login Error";
					}
					
				}
			con.Close();
			}
		}

    protected void TextBox1_TextChanged1(object sender, EventArgs e)
    {

    }
}