Đang chuẩn bị liên kết để tải về tài liệu:
Week 2 - Windows Controls

Steps: Instantiate a new control Set some properties of the control Name property Location property Text property Add it to the Controls collection of the form or the container (GroupBox,Panel, FlowLayoutPanel, ) | Week 2 Windows Controls (Chapter 1 - 4) Contents Adding control and event at run-time (p.23+ p.30+ p.137+ p.172) Sharing event handler (p.167) ImageList component (p.115) ListView control (p.98) Slide Adding control at run-time (p.23+ p.30+ p.137) Steps: Instantiate a new control Set some properties of the control Name property Location property Text property Add it to the Controls collection of the form or the container (GroupBox,Panel, FlowLayoutPanel, ) Slide Adding control at run-time: Example Button aButton = new Button(); aButton.Location = new Point(20,20); aButton.Text = "Test Button"; this.Controls.Add(aButton); // add button to form // panel1.Controls.Add(aButton); // add button to panel Exercise 3 – Module 3 Slide Module 2, bài 3: TextBox txt = new TextBox(); txt.Text = ""; txt.Name = "txt1"; txt.Location = new Point(20,20); txt.Width = groupBox1.Size.Width - 40; groupBox1.Controls.Add(txt); Creating event handlers at run-time (p.172) Steps: Create a method whose signature matches the signature for the event Use the += operator to associate the method with the event Example: private void EventMethod( object sender, EventArgs e ) { MessageBox.Show("aaaa"); } aButton.Click += new EventHandler(EventMethod); Remove an event handler by using the =- operator Slide Exercise 3 – Module 3 Exercise 3 – Module 3 private void textBox1_TextChanged(object sender, EventArgs e) { TextBox t=(TextBox)sender; } private void textBox1_DoubleClick(object sender, EventArgs e) { } this.textBox1.DoubleClick += new System.EventHandler(this.textBox1_DoubleClick); this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged); Sharing event handler (p.167) Sharing event handler for case: Multi-controls use the same event handler At design-time: See near figure Exercise 2,6 – Module 3 At run-time: Write code: use += Exercise 5 – Module 3 Slide Exercise 2 – Module 3: private void radioButton_CheckedChanged(object sender, EventArgs e) { . | Week 2 Windows Controls (Chapter 1 - 4) Contents Adding control and event at run-time (p.23+ p.30+ p.137+ p.172) Sharing event handler (p.167) ImageList component (p.115) ListView control (p.98) Slide Adding control at run-time (p.23+ p.30+ p.137) Steps: Instantiate a new control Set some properties of the control Name property Location property Text property Add it to the Controls collection of the form or the container (GroupBox,Panel, FlowLayoutPanel, ) Slide Adding control at run-time: Example Button aButton = new Button(); aButton.Location = new Point(20,20); aButton.Text = "Test Button"; this.Controls.Add(aButton); // add button to form // panel1.Controls.Add(aButton); // add button to panel Exercise 3 – Module 3 Slide Module 2, bài 3: TextBox txt = new TextBox(); txt.Text = ""; txt.Name = "txt1"; txt.Location = new Point(20,20); txt.Width = groupBox1.Size.Width - 40; groupBox1.Controls.Add(txt); Creating event handlers at run-time (p.172) Steps: Create a method