// Return Book.
private void Button_Return_Click(object sender, EventArgs e)
{
DateTime returnDate = this.dateTimePicker_BookReturnDate.Value.Date;
if (issueBook.ReturnBook(this.IRBookId, this.bookId, this.studentNumber, returnDate, out string errorMessage))
{
MessageBox.Show(errorMessage,
"Return Book",
MessageBoxButtons.OK,
MessageBoxIcon.Information);
PopulateDataGridView();
Button_Cancel_Click(this, null);
}
else
{
MessageBox.Show(errorMessage,
"Return Book",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
}
