public PersonEditForm(Person person, Form parentForm)
{
InitializeComponent();
foreach (Control control in this.Controls)
{
control.Tag = false;
}
if (parentForm != null)
{
this.Owner = parentForm;
this.CenterToParent();
}
this.formPerson = person;
this.okButton.Enabled = false;
this.nameText.Validating += new CancelEventHandler(this.TxtBoxEmpty__Validating);
this.emailText.Validating += new CancelEventHandler(this.TxtBoxEmpty__Validating);
this.ageText.Validating += new CancelEventHandler(this.TxtBoxEmpty__Validating);
this.licText.Validating += new CancelEventHandler(this.TxtBoxEmpty__Validating);;
this.gpaText.Validating += new CancelEventHandler(this.TxtBoxEmpty__Validating);;
this.specText.Validating += new CancelEventHandler(this.TxtBoxEmpty__Validating);
this.nameText.TextChanged += new EventHandler(this.TxtBoxEmpty__TextChanged);
this.emailText.TextChanged += new EventHandler(this.TxtBoxEmpty__TextChanged);
this.ageText.TextChanged += new EventHandler(this.TxtBoxEmpty__TextChanged);
this.licText.TextChanged += new EventHandler(this.TxtBoxEmpty__TextChanged);;
this.gpaText.TextChanged += new EventHandler(this.TxtBoxEmpty__TextChanged);;
this.specText.TextChanged += new EventHandler(this.TxtBoxEmpty__TextChanged);
/*
* KeyPress Event for TextBox fields
* Occurs when the user presses a key sequence which generates a character(shift + A for example) within the control
* Accepts the KeyPressEventHandler() delegate, whose method must have the following signature:
* private void ObjectName__KeyPress(object sender, KeyPressEventArgs e)
*
* Example for adding the delegate method:
* this.objectName.KeyPress += new KeyPressEventHandler(this.ObjectName__KeyPress);
*
* Important Fields in sender:
* TextBox tb = (TextBox)sender;
* tb.Text: the current text in the TextBox
*
* Important Fields in KeyPressEventArgs
* e.KeyChar: gets or sets the character just pressed allowing you to change, suppress or pass - through each character
* e.Handled: a boolean to indicate whether the delegate's method "handled" the keypress. If it is set to true, then .NET will not process the keypress (ie. the keyboard buffer will be cleared).
*/
// finish coding the TxtNum__KeyPress function below, which enforces digits-only in the Age, License and GPA fields,
// and allows 1 decimal point in the GPA field.
// using the example code on line #54, add the KeyPressEventHandler delegate function TxtNum__KeyPress for the following 3 numeric fields:
this.ageText.KeyPress += new KeyPressEventHandler(this.TxtNum__KeyPress);
this.licText.KeyPress += new KeyPressEventHandler(this.TxtNum__KeyPress);
this.gpaText.KeyPress += new KeyPressEventHandler(this.TxtNum__KeyPress);
/*
* SelectedIndexChanged Event for ComboBox Controls
* Occurs when the user changes the ComboBox value
* Accepts the empty EventHandler() delegate because the event is limited to only the current control.
*
* Example for adding the delegate method:
* this.objectName.SelectedIndexChanged += new EventHandler(this.ObjectName__SelectedIndexChanged);
*
* The EventHandler delegate method must have the following signature:
* private void ObjectName__SelectedIndexChanged(object sender, EventArgs e)
*
* Important Fields in sender
* ComboBox cb = (ComboBox) sender;
* cb.SelectedIndex: the 0-based index of the selected item
* cb.SelectedItem: the string of the display value of the selected item
*
* Important Fields in EventArgs
* None.
*/
// finish coding the TypeComboBox__SelectedIndexChanged delegate function below based on the comments
// using line #81 add the Event Handler to the typeComboBox control
this.typeComboBox.SelectedIndexChanged += new EventHandler(this.TypeComboBox__SelectedIndexChanged);
/* Increase the size of the form by changing:
* MaximumSize: 842,478
* Size: 842,478
*
* Place 7 radio buttons on the form to the right of the Combo Box, Name and Email fields.
* They should be defined as:
* (Name): himRadioButton herRadioButton themRadioButton
* Text: Him Her Them
*
* (Name): froshRadioButton sophRadioButton juniorRadioButton seniorRadioButton
* Text: Freshman Sophomore Junior Senior
*
* Run the application, and notice how you can only select 1 Radio Button at a time.
* We want to be able to select 1 Gender Radio Button, and 1 Class Year Radio Button.
*
* We can do this by putting the Radio Buttons in Group Boxes.
*
* Add a GroupBox control to the form:
* (Name): genderGroupBox
* Text: Gender
*
* Drag the 3 Gender Radio Buttons onto the Group Box.
*
* Run the application again and notice how you can now select one Gender and one Class Radio Button.
*
* Your next homework will be to add Radio Buttons to the form.
*
* The CheckedChanged Event for Radio Buttons
* Occurs when the Checked status changes.
* Note that this will be called when the currently selected RadioButton unchecks and the new RadioButton becomes checked.
*
* Accepts the empty EventHandler() delegate because the event is limited to only the current control.
*
* Example for adding the delegate method:
* this.objectName.CheckedChanged += new EventHandler(this.ObjectName__CheckedChanged);
*
* The EventHandler delegate method must have the following signature:
* private void ObjectName__CheckedChanged(object sender, EventArgs e)
*
* Important Fields in sender
* RadioButton rb = (RadioButton)sender;
* rb.Checked: the current checked state of the RadioButton control.
*
* Important Fields in EventArgs
* None.
*/
// finish the GenderRadioButton__CheckedChanged delegate function below
// and using the code example on line #130, add the EventHandler to the Radio Buttons
GroupBox genderGroupBox = new GroupBox();
GroupBox classGroupBox = new GroupBox();
//size, location, text and tab for gender
genderGroupBox.Size(90, 90);
genderGroupBox.Location(454, 53);
genderGroupBox.Text = "Gender";
genderGroupBox.TabIndex = 6;
//size, location, text and tab for class
classGroupBox.Size(155, 136);
classGroupBox.Location(454, 53);
classGroupBox.Text = "Class";
classGroupBox.TabIndex = 7;
//radio buttons for gender
RadioButton himRadioButton = new RadioButton();
RadioButton herRadioButton = new RadioButton();
RadioButton themRadioButton = new RadioButton();
//text for the radio buttons
himRadioButton.Text = "Him";
herRadioButton.Text = "Her";
themRadioButton.Text = "Them";
//adding them to the gender box
genderGroupBox.Controls.Add(himRadioButton);
genderGroupBox.Controls.Add(herRadioButton);
genderGroupBox.Controls.Add(themRadioButton);
RadioButton froshRadioButton = new RadioButton();
RadioButton sophRadioButton = new RadioButton();
RadioButton juniorRadioButton = new RadioButton();
RadioButton seniorRadioButton = new RadioButton();
froshRadioButton.Text = "Freshman";
sophRadioButton.Text = "Sophomore";
juniorRadioButton.Text = "Junior";
seniorRadioButton.Text = "Senior";
genderR
classGroupBox.Controls.Add(froshRadioButton);
classGroupBox.Controls.Add(sophRadioButton);
classGroupBox.Controls.Add(juniorRadioButton);
classGroupBox.Controls.Add(seniorRadioButton);
Label classOfLabel = new Label();
classOfLabel.Size(143, 23);
classOfLabel.Text = "Class of NNNN";
classOfLabel.TextAlign = CenterToScreen;
this.himRadioButton.CheckedChanged += new EventHandler(this.GenderRadioButton__CheckedChanged);
this.herRadioButton.CheckedChanged += new EventHandler(this.GenderRadioButton__CheckedChanged);
this.themRadioButton.CheckedChanged += new EventHandler(this.GenderRadioButton__CheckedChanged);
this.froshRadioButton.CheckedChanged += new EventHandler(this.ClassRadioButton__CheckedChanged);
this.sophRadioButton.CheckedChanged += new EventHandler(this.ClassRadioButton__CheckedChanged);
this.juniorRadioButton.CheckedChanged += new EventHandler(this.ClassRadioButton__CheckedChanged);
this.seniorRadioButton.CheckedChanged += new EventHandler(this.ClassRadioButton__CheckedChanged);
this.okButton.Click += new EventHandler(this.OkButton__Click);
this.cancelButton.Click += new EventHandler(this.CancelButton__Click);
this.nameText.Text = person.name;
this.emailText.Text = person.email;
this.ageText.Text = person.age.ToString();
this.licText.Text = person.LicenseId.ToString();
if (person.GetType() == typeof(Student))
{
// initialize the typeComboBox SelectedIndex to 0 (Student)
this.typeComboBox.SelectedIndex = 0;
Student student = (Student)person;
this.gpaText.Text = student.gpa.ToString();
}
else
{
this.typeComboBox.SelectedIndex = 1;
Teacher teacher = (Teacher)person;
this.specText.Text = teacher.specialty;
}
this.Show();
}
