Beispiel #1
0
        //Pre Condition: invoked when Patron, Edit menu is activated
        // Post Condition: The file is opened
        private void patronToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            List <LibraryPatron> patrons; // List of patrons

            patrons = _lib.GetPatronsList();


            if ((patrons.Count() == 0)) // Must have patrons
            {
                MessageBox.Show("Must have patrons to edit!", "Edit Patron Error");
            }
            else
            {
                SelectPatronForm selectPatronForm = new SelectPatronForm(patrons); // The Select Patron dialog box form

                DialogResult result = selectPatronForm.ShowDialog();               // Show form as dialog and store result

                if (result == DialogResult.OK)                                     // Only add if OK
                {
                    try
                    {
                        PatronForm patronForm = new PatronForm(); // The patron dialog box form


                        LibraryPatron selected = patrons[selectPatronForm.PatronIndex]; //carry over the selection into the form

                        patronForm.PatronName = selected.PatronName;                    // sets Forms Patron Name property  to one the user selects
                        patronForm.PatronID   = selected.PatronID;                      // sets Form's Patron Id property to one the user selects
                        patronForm.ShowDialog();                                        // Show form as dialog and store result

                        if (result == DialogResult.OK)                                  // Only add if OK
                        {
                            // Uses the forms properties to edit patron
                            selected.PatronName = patronForm.PatronName;  // set patron's name to user's input
                            selected.PatronID   = patronForm.PatronID;    // set patron's id to user's input
                        }

                        patronForm.Dispose(); // Good .NET practice - will get garbage collected anyway
                    }

                    catch (ArgumentOutOfRangeException)
                    {
                        MessageBox.Show("Enter Input into the Proper Field", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }

                    catch (InvalidOperationException)
                    {
                        MessageBox.Show("Invalid Operation", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }

                    catch (FormatException)
                    {
                        MessageBox.Show("Please Enter Correct Format", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                }

                selectPatronForm.Dispose(); // Good .NET practice - will get garbage collected anyway
            }
        }
Beispiel #2
0
        // Precondition:  Edit, Patron menu item activated
        // Postcondition: The patron selected from the library has been edited
        //                with the new information replacing the existing object's
        //                properties
        private void patronToolStripMenuItem1_Click(object sender, EventArgs e)
        {
            List <LibraryPatron> patrons; // List of patrons

            patrons = _lib.GetPatronsList();

            if ((patrons.Count() == 0)) // Must have checked out items
            {
                MessageBox.Show("Must have patrons to edit!", "Edit Error");
            }
            else
            {
                SelectPatronForm spForm = new SelectPatronForm(patrons); // The select patron dialog box form
                DialogResult     result = spForm.ShowDialog();           // Show form as dialog and store result

                if (result == DialogResult.OK)                           // Only edit if OK
                {
                    int editIndex;                                       // Index of patron to edit

                    editIndex = spForm.PatronIndex;

                    if (editIndex >= 0)                                // -1 if didn't select item from combo box (should never happen!)
                    {
                        LibraryPatron editPatron = patrons[editIndex]; // The patron being edited

                        PatronForm patronForm = new PatronForm();      // The patron dialog box form

                        // Populate form fields from selected patron
                        patronForm.PatronName = editPatron.PatronName;
                        patronForm.PatronID   = editPatron.PatronID;

                        DialogResult editResult = patronForm.ShowDialog(); // Show form as dialog and store result

                        if (editResult == DialogResult.OK)                 // Only update patron if OK
                        {
                            //Edits the dictionary so that it isn't corrupted due to the keys changing
                            //_lib.ChangePatronKey(patrons[editIndex].PatronID, editPatron.PatronID, editPatron);

                            // Edit patron properties using form fields
                            editPatron.PatronName = patronForm.PatronName;
                            //editPatron.PatronID = patronForm.PatronID; //(Edited out to prevent corruption of dictionary)
                        }

                        patronForm.Dispose(); // Good .NET practice - will get garbage collected anyway
                    }
                }
                spForm.Dispose(); // Good .NET practice - will get garbage collected anyway
            }
        }