}// end AddStudentClassToSchedule_Load
private void BackButton_Click(object sender, EventArgs e)
{
Student_SignIn_Successful sss = new Student_SignIn_Successful(student4);
sss.Show();
this.Close();
}// end BackButton_Click
} // end ViewStudentSchedule_Load
private void ViewSchedule_BackButton_Click(object sender, EventArgs e)
{
Student_SignIn_Successful stSnSuc_Form = new Student_SignIn_Successful(student3);
stSnSuc_Form.Show();
this.Close();
} // end ViewSchedule_BackButton_Click
}// end SignIn
private void SignIn_Button_Click(object sender, EventArgs e)
{
int studentID = 0;
if (userID_TextBox.Text == "" || userID_TextBox.Text == null) // checks that text box is not empty.
{
SignInFailedMessage.Text = "Must enter a student id.";
SignInFailedMessage.Visible = true;
}// end if
else
{
bool isAnInteger = int.TryParse(userID_TextBox.Text, out studentID);
if (isAnInteger != true) // checks if value entered is not an integer
{
SignInFailedMessage.Text = "Sign in Username Must be a number";
SignInFailedMessage.Visible = true;
}// end if
else
{
// set the string value to the integer variable.
studentID = Int32.Parse(userID_TextBox.Text);
//create a new student object and search the database
s1 = new Student();
s1.selectDB(studentID);
// try to get the first and last name of the selected object to see if a valid student property values from the database have been stored in the variables "studentFirstName" and "studentLastName".
string studentFirstName = s1.getFirstName();
string studentLastName = s1.getLastName();
if (studentFirstName == "" && studentLastName == "") // check if the object has an actual first name and last name from the database stored inside its getter methods.
{
SignInFailedMessage.Text = "Error: The student record does not exist";
SignInFailedMessage.Visible = true;
}// end if
else
{
// Go to Students Profile
Student_SignIn_Successful StudentSignedInForm = new Student_SignIn_Successful(s1);
StudentSignedInForm.Show();
// Close this form
this.Close();
} // end inner most else
} // end else
} // end else
} // end SignIn_Button_Click