private bool IsValidated()
        {
            try
            {
                if (OldpassTextBox.Text.Trim() == string.Empty)
                {
                    MessageBox.Show("Old password is required", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    OldpassTextBox.Focus();
                    return(false);
                }
                else
                {
                    if (Iscorrect())
                    {
                        MessageBox.Show("Old password is incorrect", "error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        OldpassTextBox.Focus();
                        return(false);
                    }
                }
                if (NewPassTextBox.Text.Trim() == string.Empty)
                {
                    MessageBox.Show("New password   is required", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    NewPassTextBox.Focus();
                    return(false);
                }
                if (ReNewPassTextBox.Text.Trim() == string.Empty)
                {
                    MessageBox.Show("Password re-enter  is required", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    ReNewPassTextBox.Focus();
                    return(false);
                }


                if (NewPassTextBox.Text.Trim() != ReNewPassTextBox.Text.Trim())
                {
                    MessageBox.Show("Password does not match", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    ReNewPassTextBox.Focus();
                    return(false);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("error\n" + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            return(true);
        }
 void clear1()
 {
     OldPassTextBox.Clear();
     NewPassTextBox.Clear();
     CpassTextBox.Clear();
 }