/// <summary>
/// Verifys that the user input data is valid.
/// </summary>
/// <returns>A boolean indicating whether the components
/// have validated correctly or not.</returns>
private bool ValidateForm()
{
bool isValid = true;
//Lamda expression that compares an input to null data.
//Returns true if the supplied input is null.
Func <string, bool> compareString = s => s == "";
ClassLibrary.CheckNameIsValid(TextBoxFirstNameValue, ErrorProvider);
//Alternative to writing IF statements to improve readability.
//isValid remains the same (in this case, TRUE) if the ErrorProvider
//has no error set, otherwise it is set to false
isValid = compareString(ErrorProvider.GetError(TextBoxFirstNameValue)) ? isValid : false;
ClassLibrary.CheckNameIsValid(TextBoxLastNameValue, ErrorProvider);
isValid = compareString(ErrorProvider.GetError(TextBoxLastNameValue)) ? isValid : false;
ClassLibrary.CheckEmailIsValid(TextBoxStaffEmailValue, ErrorProvider);
isValid = compareString(ErrorProvider.GetError(TextBoxStaffEmailValue)) ? isValid : false;
//Returns true if all components validate successfully
return(isValid);
}
private void ButtonSendEmail_Click(object sender, EventArgs e)
{
ClassLibrary.CheckEmailIsValid(TextBoxEmail, ErrorProvider);
//If the ErrorProvider has an error set, then display a message
if (ErrorProvider.GetError(TextBoxEmail) != "")
{
MyMessageBox.ShowMessage("Not all components validated successfully. Please check the flagged entries and try again.");
return;
}
else if (RadioButtonStudent.Checked == true)
{
List <StudentModel> students = new List <StudentModel>();
try
{
SqlConnector db = new SqlConnector();
students = db.GetStudent_All();
}
catch
{
MyMessageBox.ShowMessage("Access to database failed.");
return;
}
//Search each StudentModel in the student list.
//If the email the user input matches an email in the
//database, send the email.
for (int i = 0; i < students.Count; i++)
{
if (students[i].StudentEmail == TextBoxEmail.Text)
{
ErrorProvider.SetError(TextBoxEmail, null);
//Send email
SendEmail(students[i].StudentEmail, students[i].StudentFirstName, students[i].StudentID, students[i].StudentPassword);
MyMessageBox.ShowMessage("Email successfully sent.");
return;
}
}
}
else if (RadioButtonStaff.Checked)
{
List <StaffModel> staffMembers = new List <StaffModel>();
try
{
SqlConnector db = new SqlConnector();
staffMembers = db.GetStaff_All();
}
catch
{
MyMessageBox.ShowMessage("Access to database failed.");
return;
}
for (int i = 0; i < staffMembers.Count; i++)
{
if (staffMembers[i].StaffEmail == TextBoxEmail.Text)
{
ErrorProvider.SetError(TextBoxEmail, null);
//Send email
SendEmail(staffMembers[i].StaffEmail, staffMembers[i].StaffFirstName, staffMembers[i].StaffEmail, staffMembers[i].StaffPassword);
MyMessageBox.ShowMessage("Email successfully sent.");
return;
}
}
}
MyMessageBox.ShowMessage("This email doesn't exist in the database.");
}
private void TextBoxEmail_Validating(object sender, CancelEventArgs e)
{
ClassLibrary.CheckEmailIsValid(TextBoxEmail, ErrorProvider);
}
