lOGIN CODE

public partial class _Default : System.Web.UI.Page 
{
    
 
    string n,p;

    SqlConnection con =new SqlConnection("UR CONNECTION");

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            this.ViewState["count"] = 0;
        }
    }
    public  void  m1()
        
    {
      
        
            con.Open();
            SqlCommand com = new SqlCommand("select*from kum where userid='" + TextBox1.Text + "'", con);
            SqlDataReader dr;
            dr = com.ExecuteReader();
            while (dr.Read())
            {
                n = dr[0].ToString();
                p = dr[1].ToString();
            }
            dr.Close();
            if (TextBox1.Text == n && TextBox2.Text == p)
            {
                Label3.Text = "Valid";
            }
            else
            {
                Label3.Text = "invalid";
            }



            con.Close();
           
        }
        
      

    
    protected void Button1_Click(object sender, EventArgs e)

    {
        int i = int.Parse(this.ViewState["count"].ToString())+1;
        this.ViewState["count"] = i;

        if (i <= 3)
        {


            m1();
        }

        else
        {
            Label4.Text = "no";
        }

                
            }

            
        }
       
    


        {
            for (i = 0; i < 2; i++)
            {

                m1();

                
            }
            
        }
        else
        {
            Label3.Text = "no";
        }
    }
}