private void txtArea_TextChanged(object sender, EventArgs e)
{
fileOperations.IsSaved = false;
editOperations.AddUndo(textBox.Text);
editOperations.ClearRedo();
UpdateFormTitle();
}
public Notepad()
{
InitializeComponent();
fileOperations = new FileOperation();
editOperations = new EditOperation();
fileOperations.NewFile();
this.Text = fileOperations.Filename;
editOperations.AddUndo(textBox.Text);
}