// Button search Student by student number.
private void Button_SearchStudent_Click(object sender, EventArgs e)
{
if (this.textBox_EnrollmentNo.Text != string.Empty)
{
string enrollmentNo = this.textBox_EnrollmentNo.Text.Trim();
DataTable table = issueBook.GetNotReturnedBooksByStudentNo(enrollmentNo, out string errorMessage);
if (table.Rows.Count > 0)
{
this.dataGridView_AllBooks.DataSource = table;
this.dataGridView_AllBooks.ClearSelection();
}
else
{
if (errorMessage != string.Empty)
{
MessageBox.Show("No table found!"
+ Environment.NewLine
+ errorMessage,
"Load Students and Books",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
else
{
MessageBox.Show("The student has no issued books!",
"Load Students and Books",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
}
}
}
