private void button5_Click(object sender, EventArgs e) { RegistryKey reg; reg = Registry.LocalMachine.CreateSubKey("SOFTWARE").CreateSubKey("RegisterInform"); preg = Convert.ToString(reg.GetValue("Password")); ereg = Convert.ToString(reg.GetValue("Email")); if (preg != "" && ereg != "") { if (deletepwtxt.Text == "") { MessageBox.Show("Enter The Password!", "Notice"); } else { if (MD5HashFunc(this.deletepwtxt.Text) == pw) { RE_REGISTER reregister = new RE_REGISTER(); reregister.Hide(); reg.SetValue("Password", ""); reg.SetValue("Email", ""); reg.SetValue("Mode", ""); MessageBox.Show("Succesfull!, Password And Email Is Deleted!" + Environment.NewLine + "Even If Password And Email Is Deleted" + Environment.NewLine + "You Can Use Login And Re-Register!", "Notice"); } else if (this.deletepwtxt.Text != pw || this.deletepwtxt.Text == "") { MessageBox.Show("Worng Password!", "Notice"); } } } else { MessageBox.Show("The Password And Email Is Already Deleted!", "Notice"); } }