Working with Form

Chapter II

Message Boxes

• A message box is a special dialog box used to display a piece of information to user.– MessageBox class – EX:

MessageBox.Show("Hello, how are you?","My SMS");MessageBox.Show("Welcome to the Wonderful World of Visual C#","Visual C# Tutorials", MessageBoxButtons.OKCancel);

MessageBox.Show("Your order appears to be correct" + "\nAre you ready to provide your credit card information?", "Customer Order Processing", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Information);

EX:MessageBox.Show("Your order appears to be correct" + "\nAre you ready to provide your credit card information?",

"Customer Order Processing", MessageBoxButtons.YesNoCancel,

MessageBoxIcon.Information, MessageBoxDefaultButton.Button1);NOTE:Button1 , Button2 , Button3

private void txtNumber_KeyPress(object sender, KeyPressEventArgs e) { if ((e.KeyChar >= 'a' && e.KeyChar <= 'z') || (e.KeyChar >= 'A' && e.KeyChar <= 'Z') || e.KeyChar==' ') { e.Handled =true; } }

private void textBox1_KeyPress(object sender, KeyPressEventArgs e) { if ((e.KeyChar >= '0' && e.KeyChar <= '9')) { e.Handled = true; } }Note: || (e.KeyChar == (char)Keys.Back)

1. Button2. OpenFileDialog Control3. Picture Box

this.WindowState = FormWindowState.Minimized; this.WindowState = FormWindowState.Normal; this.WindowState = FormWindowState.Maximized;EX:foreach (Control c in this.Controls) { TextBox t = c as TextBox; ComboBox cbo = c as ComboBox;

if (t != null) { t.Text = " "; } else if (cbo != null) { cbo.Text = " "; } }

Radiobutton and CheckBox

ListBox

Creating Timers

Creating Tabbed Dialog Boxes

Creating List View

1. Adding Menu Items2. Creating Checked Menu Items3. Assigning Shortcut Keys4. Using the Toolbar Control

Creating MDI FormsAll the projects you've created so far have been single-document interface (SDI) projects. In SDI programs, every form in the application is a peer of all other forms; no intrinsic hierarchy exists between forms. C# also lets you create multiple-document interface (MDI) programs. A MDI program contains one parent window (also called a container) and one or more child windows. A classic example of a MDI program is Microsoft Word 95 (200 behaves slightly different, depending on how it's set up).

this.Hide();Form2 frm2 = new Form2();frm2.Show();