private void btnSet_Click(object sender, EventArgs e)
{
try
{
if (IsValidData())
{
// Saves the values from the five user inputs to the SetCourses Class (First Custom Class)
SetCourses.setNumberOfCourses(txtNoCourses.Text);
SetCourses.setName(txtStudentName.Text);
SetCourses.setDate(startDateCalendar.SelectionStart.ToShortDateString());
SetCourses.setCourseNo(cboCourseNo.Text);
if (rdoHybrid.Checked)
{
SetCourses.setCourseType(rdoHybrid.Text);
}
else
{
SetCourses.setCourseType(rdoOnline.Text);
}
}
}
// Checks for valid data, if data is not present or not valid, an error message box will appear
catch (Exception ex)
{
MessageBox.Show(ex.Message + "/n/n" +
ex.GetType().ToString() + "/n" +
ex.StackTrace, "Exception");
}
bool IsValidData()
{
return
(IsPresent(txtNoCourses, "Number of Courses") &&
IsInt32(txtNoCourses, "Number of Courses") &&
IsWithinRange(txtNoCourses, "Number of Courses", 1, 5) &&
IsPresent(txtStudentName, "Student Name"));
}
// Verifies the user entered data in the first two text boxes
bool IsPresent(TextBox textBox, string name)
{
if (textBox.Text == "")
{
MessageBox.Show(name + " is a required field.", "Entry Error");
textBox.Focus();
return(false);
}
return(true);
}
// Verifies the Number of Courses user input is a valid integer
bool IsInt32(TextBox textBox, string name)
{
int number = 0;
if (Int32.TryParse(textBox.Text, out number))
{
return(true);
}
else
{
MessageBox.Show(name + " must be an integer.", "Entry Error");
textBox.Focus();
return(false);
}
}
//Verifies the Number of Courses user input is between 1 and 5
bool IsWithinRange(TextBox textBox, string name, decimal min, decimal max)
{
decimal number = Convert.ToDecimal(textBox.Text);
if (number < min || number > max)
{
MessageBox.Show(name + " must be between " + min + " and " + max
+ ". Student must have administrative permission to take more than five classes.",
"Entry Error");
textBox.Focus();
return(false);
}
return(true);
}
}
public static string getCourseType2()
{
return(SetCourses.getCourseType());
}
public static string getCourseNo2()
{
return(SetCourses.getCourseNo());
}
public static string getDate2()
{
return(SetCourses.getDate());
}
public static string getName2()
{
return(SetCourses.getName());
}
// Retrieves stored values from SetCourses Class
public static int getNumberOfCourses2()
{
return(SetCourses.getNumberOfCourses());
}