336 lines
12 KiB
C#
336 lines
12 KiB
C#
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using DBWizard.Models;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Runtime.Serialization.Formatters.Binary;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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/* References
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* https://www.youtube.com/watch?v=ayp3tHEkRc0
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* https://www.coderslexicon.com/passing-data-between-forms-using-delegates-and-events/
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* https://dapper-tutorial.net/parameter-anonymous
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* https://www.sqlitetutorial.net/sqlite-foreign-key/
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* https://stackoverflow.com/questions/289680/difference-between-2-dates-in-sqlite
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* https://dzone.com/articles/convert-object-byte-array-and
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*/
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// Using a delegate to trigger method on the customer view form
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// https://www.coderslexicon.com/passing-data-between-forms-using-delegates-and-events/
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namespace DBWizard
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{
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public partial class Form1 : Form
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{
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SqliteDataAccess SqliteDataAccess = new SqliteDataAccess();
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bool bStudentRecordExists = false;
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public Form1()
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{
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InitializeComponent();
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}
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private void Form1_Load(object sender, EventArgs e)
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{
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FillComboBoxes();
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}
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/* Fills program and school combo boxes on the form
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* with the static data from the sqlite db.
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* input: no input
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* output: void
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*/
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private void FillComboBoxes()
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{
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List<Program> programs = new List<Program>();
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programs = SqliteDataAccess.GetPrograms();
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foreach (Program p in programs)
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{
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programComboBox.Items.Add(p.name);
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}
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List<School> schools = new List<School>();
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schools = SqliteDataAccess.GetSchools();
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foreach (School s in schools)
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{
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schoolComboBox.Items.Add(s.name);
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}
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}
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//TODO: implement
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private void student_pictureBox_DoubleClick(object sender, EventArgs e)
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{
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DialogResult dr = pic_openFileDialog.ShowDialog();
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if(dr == DialogResult.OK)
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{
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}
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}
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private void pic_openFileDialog_FileOk(object sender, CancelEventArgs e)
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{
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byte[] dickpic;
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//Chunk file into bytes.
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//If file > 2147483647 bytes long, reject file.
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dickpic = ObjectToByteArray(student_pictureBox.Image);
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if (dickpic.Length >= 2147483647) //THAT'S WHAT SHE SAID
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{
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MessageBox.Show("The selected student photo size is too large. Choose a smaller photo size or shrink the photo.");
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return;
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}
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}
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//TODO: implement
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private void pictureBox1_Click(object sender, EventArgs e)
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{
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DialogResult dr = pic_openFileDialog.ShowDialog();
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if(dr == DialogResult.OK)
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{
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//Place in dicpic box
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//change tag of pic box to something else
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student_pictureBox.Tag = "dickpic";
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}
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}
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private void save_button_Click(object sender, EventArgs e)
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{
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byte[] dickpic;
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//Perform sanity check, ensure all data is filled except picture
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// Check to see if any control is in error.
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foreach (Control c in errorProvider1.ContainerControl.Controls)
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{
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if (errorProvider1.GetError(c) != "")
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{
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MessageBox.Show("Please fix the errors on the form!");
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return;
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}
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}
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//Validate the picture is under 2147483647 characters in length.
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dickpic = ObjectToByteArray(student_pictureBox.Image);
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if(dickpic.Length >= 2147483647) //THAT'S WHAT SHE SAID
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{
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MessageBox.Show("The selected student photo size is too large. Choose a smaller photo size or shrink the photo.");
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return;
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}
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//Collect form data in student object
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Student student = new Student();
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student.student_id = student_idTextBox.Text;
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student.FirstName = firstNameTextBox.Text;
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student.LastName = lastNameTextBox.Text;
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student.DOB = dob_dateTimePicker.Value.ToString();
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student.gender = genderComboBox.Text;
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student.address = addressTextBox.Text;
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student.program_id = programComboBox.SelectedIndex + 1;
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student.school_id = schoolComboBox.SelectedIndex + 1;
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student.GradeLevel = gradeLevelComboBox.Text;
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if (student_pictureBox.Tag.ToString() == "DefaultImage")
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student.photo = null;
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else
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student.photo = ObjectToByteArray(student_pictureBox.Image);
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//collect parent
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Parent parent = new Parent();
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parent.LastName = parent_lastNameTextBox.Text;
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parent.FirstName = parent_firstNameTextBox.Text;
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parent.PhoneNumber = long.Parse(phoneNumberNumericUpDown.Value.ToString());
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parent.EmailAddress = emailAddressTextBox.Text;
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//save data to sqldb.
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//update existing student.
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if(SqliteDataAccess.FindStudentByStudentId(student.student_id).Count > 0)
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{
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SqliteDataAccess.UpdateStudent(student);
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SqliteDataAccess.UpdateParent(parent,student.parent_id);
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}
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else //new student
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{
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student.parent_id = SqliteDataAccess.InsertNewParent(parent);
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SqliteDataAccess.InsertNewStudent(student);
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MessageBox.Show("Student successfully added");
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}
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}
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//Convert student photo to byte array for saving to db.
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//Also used to see if the photo is too large for the db blob type.
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private byte[] ObjectToByteArray(Object obj)
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{
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if (obj == null)
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return null;
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BinaryFormatter bf = new BinaryFormatter();
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MemoryStream ms = new MemoryStream();
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bf.Serialize(ms, obj);
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return ms.ToArray();
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}
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//Convert student photo from byte array to object.
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// Convert a byte array to an Object
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private Object ByteArrayToObject(byte[] arrBytes)
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{
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MemoryStream memStream = new MemoryStream();
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BinaryFormatter binForm = new BinaryFormatter();
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memStream.Write(arrBytes, 0, arrBytes.Length);
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memStream.Seek(0, SeekOrigin.Begin);
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Object obj = (Object)binForm.Deserialize(memStream);
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return obj;
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}
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// Basic input validation on a string given a textbox control
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// ensures only values a-z, with length two or greater.
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private void String_TextBox_Validating(object sender, CancelEventArgs e)
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{
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TextBox tb = (TextBox)sender;
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if (!Regex.IsMatch(tb.Text, "[A-Za-z]{2,}"))
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errorProvider1.SetError(tb, "Enter a value a-z only of length two or longer.");
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else
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errorProvider1.SetError(tb, "");
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}
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private void ComboBox_Validating(object sender, CancelEventArgs e)
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{
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ComboBox cb = (ComboBox)sender;
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if (cb.SelectedIndex < 0)
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{ errorProvider1.SetError(cb, "Select an item."); }
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else
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{ errorProvider1.SetError(cb, ""); }
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}
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/* Does not really check to see if it is a valid phone number
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* since the phone companies introduce new area codes all the damn time.
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* Only checks to see the most likely case that the user of the program
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* has left the phone number value as the default minimum value.
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*/
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private void phoneNumberNumericUpDown_Validating(object sender, CancelEventArgs e)
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{
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if(phoneNumberNumericUpDown.Value == phoneNumberNumericUpDown.Minimum
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|| phoneNumberNumericUpDown.Value == phoneNumberNumericUpDown.Maximum)
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{ errorProvider1.SetError(phoneNumberNumericUpDown, "Type in a valid phone number"); }
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else
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{ errorProvider1.SetError(phoneNumberNumericUpDown, ""); }
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}
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private void emailAddressTextBox_Validating(object sender, CancelEventArgs e)
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{
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//email address regex
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//^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,5}$
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if (!Regex.IsMatch(emailAddressTextBox.Text, @"^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,5}$"))
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errorProvider1.SetError(emailAddressTextBox, "Enter a valid email address: user@domain.com");
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else
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errorProvider1.SetError(emailAddressTextBox, "");
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}
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private void dob_dateTimePicker_Validating(object sender, CancelEventArgs e)
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{
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if(dob_dateTimePicker.Value == DateTime.Now)
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{ errorProvider1.SetError(dob_dateTimePicker, "Please choose DOB."); }
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else
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{ errorProvider1.SetError(dob_dateTimePicker, ""); }
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}
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private void student_idTextBox_Validating(object sender, CancelEventArgs e)
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{
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TextBox tb = (TextBox)sender;
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if (!Regex.IsMatch(tb.Text, "[A-Za-z0-9]{2,}"))
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errorProvider1.SetError(tb, "Enter a value a-z0-9 only of length two or longer.");
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else
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errorProvider1.SetError(tb, "");
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}
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//TODO: Remove Chaos Monkey button
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private void btnChaosMonkey_Click(object sender, EventArgs e)
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{
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MessageBox.Show("CHAOS MONKEY");
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return;
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}
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private void clear_button_Click(object sender, EventArgs e)
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{
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ClearForm();
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}
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// clears the form
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private void ClearForm()
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{
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foreach(Control c in this.Controls)
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{
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if (c is TextBox)
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{
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TextBox tb = (TextBox)c;
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tb.Text = null;
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}
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if(c is ComboBox)
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{
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ComboBox cb = (ComboBox)c;
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cb.SelectedIndex = -1;
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}
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if(c is DateTimePicker)
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{
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DateTimePicker dtp = (DateTimePicker)c;
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dtp.Value = DateTime.Today;
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}
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if(c is NumericUpDown)
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{
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NumericUpDown nud = (NumericUpDown)c;
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nud.Value = nud.Minimum;
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}
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}
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}
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private void search_textBox_KeyDown(object sender, KeyEventArgs e)
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{
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List<Student> foundStudents = new List<Student>();
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if (e.KeyCode == Keys.Enter)
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{
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foundStudents_comboBox.Items.Clear();
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foundStudents_comboBox.Text = String.Empty;
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foundStudents = SqliteDataAccess.FindStudentByLastname(search_textBox.Text);
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foreach (Student s in foundStudents)
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{
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foundStudents_comboBox.Items.Add(s);
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}
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foundStudents_comboBox.Text = (foundStudents.Count > 0) ? "Students found, click here" : "No students found";
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}
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}
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//Do nothing if the user tries to type in the found student combobox.
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private void foundStudents_comboBox_KeyDown(object sender, KeyEventArgs e)
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{
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e.SuppressKeyPress = true;
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}
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//TODO:Populate the form based on the found student.
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private void foundStudents_comboBox_SelectionChangeCommitted(object sender, EventArgs e)
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{
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ClearForm();
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}
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}
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}
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