Chapter 11 Advanced Topics in Windows Forms

11.1 Drag-Drop P523Source control Target control +MouseDown -TXT1.DoDragDrop textBox1.Text, DragDropEffects.Copy AllowDrop=true +DragEnter if e.Data.GetDataPresent DataFormats.Text e.E

Week 10

Chapter 11 Advanced Topics in

Windows Forms

Chapter 12 Enhancing Usability

Chapter 15: Crystal Report

Chapter 11 Advanced Topics

in Windows Forms

11.1 Drag-Drop (P523)

11.2 MDI (P543)

11.1 Drag-Drop (P523)

Windows users fall into two general

categories:

use the keyboard

use the mouse

Drag and drop: same as cutting and pasting

using keyboard

11.1 Drag-Drop (P523)

Sequence of events

Dragging is initiated (call DoDragDrop for the source )

The DoDragDrop method takes two parameters:

data

allowedEffects

A new DataObject object is automatically created

Raises the GiveFeedback event (display a custom

mouse pointer during the drag)

Control with AllowDrop =True can receive drop.

DragEnter raised (mouse pass).

11.1 Drag-Drop (P523)

Source control

Target control

+MouseDown

-TXT1.DoDragDrop

(textBox1.Text,

DragDropEffects.Copy )

AllowDrop=true

+DragEnter

if (e.Data.GetDataPresent (DataFormats.Text))

e.Effect = DragDropEffects.Copy;

+DragDrop

TXT2.Text = (string)e.Data.GetData ( DataFormats.Text);

Drag-Drop: demo: Textbox

Using Textbox

Step1: DragEnter event

Step2: DragDrop event

Step3: MouseDown event

Drag-Drop: demo: PictureBox

AllowDrop

DragEnter

DragDrop

KeyState

11.1 DragDrop (P523)

-demo: treeview

Example: Drag-Drog in Treeview

treeview1.PointToClient(new Point(e.X, e.Y));

Clone node;

}

form tree

Xform

Yform

Xcontrol

Ycontrol

Point_form(Xform,Yform)

Point_control(Xform,Yform)

C PointToClient(Point_form )

11.1 DragDrop (P523)

-demo: Listview

Make new collection

Array

ArrayList

List<generic>

11.2 MDI

parent form/child form model

Has a single parent form

The parent form organizes and

arranges all of the child documents that

are currently open.

11.2 MDI

What is an MDI Form?

Multiple-document interface (MDI)

applications allow you to display multiple

documents at the same time, with each

document displayed in its own window

11.2 MDI

How do I create an MDI Parent form ?

Creating an MDI Parent Form

IsMDIContainer=true

How do I create an MDI Child form ?

Creating MDI Child Forms

Set MdiParent to parent form

11.2 MDI

How do I change the Background color of an MDI Parent form?

private void MDIParent1_Load(object sender, EventArgs e)

foreach (Control c in this.Controls) {

MdiClient m = (MdiClient)c;

m.BackColor = Color.Red;

11.2 MDI

Identifying the Active Child Form

Form aForm;

aForm = this.ActiveMDIChild;

11.2 MDI

Arranging MDI Child Forms

this.LayoutMdi(System.Windows.Forms.Mdi

Layout.Cascade);

11.2 MDI

Window List Menu

MenuStrip component

Set the MdiWindowListItem property to the

menu item

11.2 MDI

How do I check if an MDI Child form already exists,

so that we don't show the same form twice?

foreach (Form f in this.MdiChildren)

if (f.Text == "Window 2")

this.ActivateMdiChild(f);

Chapter 12 Enhancing

Usability

Lesson 2: Using User Assistance

Controls and Components

The ProgressBar Control

StatusStrip Control

ToolTip Component

ErrorProvider Component

HelpProvider Component

Chapter 12 Using User Assistance

Controls and Components

The ProgressBar Control

Visually indicate progress for a

time-consuming operation

Maximum, Minimum, Value, Step

progressBar1.Minimum = 0;

progressBar1.Maximum = 100;

progressBar1.Step = 1;

Chapter 12 Using User Assistance

Controls and Components

StatusStrip Control

Display status information about the

application

ToolStripStatusLabel

Text

Chapter 12 Using User Assistance

Controls and Components

ToolTip Component

To set a tooltip in the Designer

To set a tooltip in code

toolTip1.SetToolTip(button1,

"This button activates the self-destruct

Chapter 12 Using User Assistance

Controls and Components

ErrorProvider Component

provide feedback to the user when an error

condition results for a control in the form

Turn on

errorProvider1.SetError(TextBox1, "Value must

be numeric");

Turn off

errorProvider1.SetError(TextBox1, "");

Chapter 15: Report

Chapter 15: Crystal Report

Crystal Report File

Crystal Report Viewer

Chapter 15: Crystal Report

1 Create Type Dataset

2 Create Crystal Report Template

Menu Project -> Add new item -> Crystal Report

->Using Report Wizard->choose

Typed-Dataset->…

Chapter 15: Crystal Report

Typed Dataset

Dataset

Crystal Report.Rpt

Crystal Report Viewer

Class

Chapter 15: Crystal Report

//Create and Fill data into Dataset ds

CrystalReport1 c = new CrystalReport1();

c.SetDataSource(ds);

crystalReportViewer1.ReportSource = c;