protected void Button1_Click(object sender, EventArgs e)
{
string user = TextBox1.Text;
string pass = TextBox2.Text;
account a = new account();
int res = a.login(user, pass);
if (res == 1)
{
Session["username"] = user;
Server.Transfer("upload.aspx");
}
else
{
Label3.Visible = true;
}
}