chap26.lst

Csharp2完全参考手册源代码 详细的说明可以在书里看到 该书是08年刚出炉很新鲜

listing 1
// A form-based Windows Skeleton. 
 
using System; 
using System.Windows.Forms; 
 
// WinSkel is derived from Form. 
class WinSkel : Form { 
 
  public WinSkel() { 
    // Give the window a name. 
    Text = "A Windows Skeleton"; 
  }   
 
  // Main is used only to start the application. 
  [STAThread] 
  public static void Main() { 
    WinSkel skel = new WinSkel(); // create a form 
 
    // Start the window running. 
    Application.Run(skel); 
  } 
}

listing 2
// Add a Button. 
 
using System; 
using System.Windows.Forms; 
using System.Drawing; 
 
class ButtonForm : Form { 
  Button MyButton = new Button(); 
 
  public ButtonForm() { 
    Text = "Using a Button"; 
 
    MyButton = new Button(); 
    MyButton.Text = "Press Here"; 
    MyButton.Location = new Point(100, 200); 
 
    Controls.Add(MyButton); 
  }   
 
  [STAThread] 
  public static void Main() { 
    ButtonForm skel = new ButtonForm(); 
 
    Application.Run(skel); 
  } 
}

listing 3
// Handle button messages. 
 
using System; 
using System.Windows.Forms; 
using System.Drawing; 
 
class ButtonForm : Form { 
  Button MyButton = new Button(); 
 
  public ButtonForm() { 
    Text = "Respond to a Button"; 
 
    MyButton = new Button(); 
    MyButton.Text = "Press Here"; 
    MyButton.Location = new Point(100, 200); 
 
    // Add button event handler to list. 
    MyButton.Click += MyButtonClick; 
 
    Controls.Add(MyButton); 
  }   
 
  [STAThread] 
  public static void Main() { 
    ButtonForm skel = new ButtonForm(); 
 
    Application.Run(skel); 
  } 
 
  // Handler for MyButton. 
  protected void MyButtonClick(object who, EventArgs e) { 
 
    if(MyButton.Top == 200) 
      MyButton.Location = new Point(10, 10); 
    else 
      MyButton.Location = new Point(100, 200); 
  } 
}

listing 4
// An Alternative button handler. 
protected void MyButtonClick(object who, EventArgs e) {  
  Button b = (Button) who;  
  
  if(b.Top == 200)  
    b.Location = new Point(10, 10);  
  else  
    b.Location = new Point(100, 200);  
}

listing 5
// Add a stop button. 
 
using System; 
using System.Windows.Forms; 
using System.Drawing; 
 
class ButtonForm : Form { 
  Button MyButton; 
  Button StopButton; 
 
  public ButtonForm() { 
    Text = "Adding a Stop Button"; 
 
    // Create the buttons. 
    MyButton = new Button(); 
    MyButton.Text = "Press Here"; 
    MyButton.Location = new Point(100, 200); 
 
    StopButton = new Button(); 
    StopButton.Text = "Stop"; 
    StopButton.Location = new Point(100, 100); 
 
    // Add the button event handlers to the window. 
    MyButton.Click += MyButtonClick; 
    Controls.Add(MyButton); 
    StopButton.Click += StopButtonClick; 
    Controls.Add(StopButton); 
  }   
 
  [STAThread] 
  public static void Main() { 
    ButtonForm skel = new ButtonForm(); 
 
    Application.Run(skel); 
  } 
 
  // Handler for MyButton. 
  protected void MyButtonClick(object who, EventArgs e) { 
 
    if(MyButton.Top == 200) 
      MyButton.Location = new Point(10, 10); 
    else 
      MyButton.Location = new Point(100, 200); 
  } 
 
  // Handler for StopButton. 
  protected void StopButtonClick(object who, EventArgs e) { 
 
    // If users answers Yes, terminate the program. 
    DialogResult result = MessageBox.Show("Stop Program?", 
                            "Terminate", 
                            MessageBoxButtons.YesNo); 
 
    if(result == DialogResult.Yes) Application.Exit(); 
  } 
}

listing 6
// Add a Main Menu. 
 
using System; 
using System.Windows.Forms; 
 
class MenuForm : Form { 
  MainMenu MyMenu; 
 
  public MenuForm() { 
    Text = "Adding a Main Menu"; 
 
    // Create a main menu object. 
    MyMenu  = new MainMenu(); 
 
    // Add top-level menu items to the menu. 
    MenuItem m1 = new MenuItem("File"); 
    MyMenu.MenuItems.Add(m1); 
 
    MenuItem m2 = new MenuItem("Tools"); 
    MyMenu.MenuItems.Add(m2); 
 
    // Create File submenu 
    MenuItem subm1 = new MenuItem("Open"); 
    m1.MenuItems.Add(subm1); 
 
    MenuItem subm2 = new MenuItem("Close"); 
    m1.MenuItems.Add(subm2); 
 
    MenuItem subm3 = new MenuItem("Exit"); 
    m1.MenuItems.Add(subm3); 
 
    // Create Tools submenu 
    MenuItem subm4 = new MenuItem("Coordinates"); 
    m2.MenuItems.Add(subm4); 
 
    MenuItem subm5 = new MenuItem("Change Size"); 
    m2.MenuItems.Add(subm5); 
 
    MenuItem subm6 = new MenuItem("Restore"); 
    m2.MenuItems.Add(subm6); 
 
 
    // Add event handlers for the menu items. 
    subm1.Click += MMOpenClick; 
    subm2.Click += MMCloseClick; 
    subm3.Click += MMExitClick; 
    subm4.Click += MMCoordClick; 
    subm5.Click += MMChangeClick; 
    subm6.Click += MMRestoreClick; 
 
    // Assign the menu to the form. 
    Menu = MyMenu; 
  }   
 
  [STAThread] 
  public static void Main() { 
    MenuForm skel = new MenuForm(); 
 
    Application.Run(skel); 
  } 
 
  // Handler for main menu Coordinates selection. 
  protected void MMCoordClick(object who, EventArgs e) { 
    // Create a string that contains the coordinates. 
    string size = 
      String.Format("{0}: {1}, {2}\n{3}: {4}, {5} ", 
                    "Top, Left", Top, Left, 
                    "Bottom, Right", Bottom, Right); 
 
    // Display a message box. 
    MessageBox.Show(size, "Window Coordinates", 
                    MessageBoxButtons.OK); 
  } 
 
  // Handler for main menu Change selection. 
  protected void MMChangeClick(object who, EventArgs e) { 
    Width = Height = 200; 
  } 
 
  // Handler for main menu Restore selection. 
  protected void MMRestoreClick(object who, EventArgs e) { 
    Width = Height = 300; 
  } 
 
  // Handler for main menu Open selection. 
  protected void MMOpenClick(object who, EventArgs e) { 
 
    MessageBox.Show("Inactive", "Inactive", 
                    MessageBoxButtons.OK); 
  } 
 
  // Handler for main menu Open selection. 
  protected void MMCloseClick(object who, EventArgs e) { 
 
    MessageBox.Show("Inactive", "Inactive", 
                    MessageBoxButtons.OK); 
  } 
 
  // Handler for main menu Exit selection. 
  protected void MMExitClick(object who, EventArgs e) { 
 
    DialogResult result = MessageBox.Show("Stop Program?", 
                            "Terminate", 
                             MessageBoxButtons.YesNo); 
 
    if(result == DialogResult.Yes) Application.Exit(); 
  } 
}

listing 7
// Use a MenuStrip. 
  
using System;  
using System.Windows.Forms;  
  
class MenuForm : Form {  
  MenuStrip MyMenu; // use a MenuStrip  
  
  public MenuForm() {  
    Text = "Use a MenuStrip";  
  
    // Create a main menu object.  
    MyMenu  = new MenuStrip();  
  
    // Add top-level menu items to the menu.  
    ToolStripMenuItem m1 = new ToolStripMenuItem("File");  
    MyMenu.Items.Add(m1);  
  
    ToolStripMenuItem m2 = new ToolStripMenuItem("Tools");  
    MyMenu.Items.Add(m2);  
  
    // Create File submenu  
    ToolStripMenuItem subm1 = new ToolStripMenuItem("Open");  
    m1.DropDownItems.Add(subm1);  
  
    ToolStripMenuItem subm2 = new ToolStripMenuItem("Close");  
    m1.DropDownItems.Add(subm2);  
  
    ToolStripMenuItem subm3 = new ToolStripMenuItem("Exit");  
    m1.DropDownItems.Add(subm3);  
  
    // Create Tools submenu  
    ToolStripMenuItem subm4 = new ToolStripMenuItem("Coordinates");  
    m2.DropDownItems.Add(subm4);  
  
    ToolStripMenuItem subm5 = new ToolStripMenuItem("Change Size");  
    m2.DropDownItems.Add(subm5);  
  
    ToolStripMenuItem subm6 = new ToolStripMenuItem("Restore"); 
    m2.DropDownItems.Add(subm6);  
  
  
    // Add event handlers for the menu items.  
    subm1.Click += MMOpenClick;  
    subm2.Click += MMCloseClick;  
    subm3.Click += MMExitClick;  
    subm4.Click += MMCoordClick;  
    subm5.Click += MMChangeClick;  
    subm6.Click += MMRestoreClick;  
 
    // Add to list of controls. 
    Controls.Add(MyMenu); 
 
    // Assign the menu to the form.  
    MainMenuStrip = MyMenu;  
  }    
  
  [STAThread]  
  public static void Main() {  
    MenuForm skel = new MenuForm();  
 
    // Enable visual styles for Windows XP. 
    Application.EnableVisualStyles();  
  
    Application.Run(skel);  
  }  
  
  // Handler for main menu Coordinates selection.  
  protected void MMCoordClick(object who, EventArgs e) {  
    // Create a string that contains the coordinates.  
    string size =  
      String.Format("{0}: {1}, {2}\n{3}: {4}, {5} ",  
                    "Top, Left", Top, Left,  
                    "Bottom, Right", Bottom, Right);  
  
    // Display a message box.  
    MessageBox.Show(size, "Window Coordinates",  
                    MessageBoxButtons.OK);  
  }  
  
  // Handler for main menu Change selection.  
  protected void MMChangeClick(object who, EventArgs e) {  
    Width = Height = 200;  
  }  
  
  // Handler for main menu Restore selection.  
  protected void MMRestoreClick(object who, EventArgs e) {  
    Width = Height = 300;  
  }  
  
  // Handler for main menu Open selection.  
  protected void MMOpenClick(object who, EventArgs e) {  
  
    MessageBox.Show("Inactive", "Inactive",  
                    MessageBoxButtons.OK);  
  }  
  
  // Handler for main menu Open selection.  
  protected void MMCloseClick(object who, EventArgs e) {  
  
    MessageBox.Show("Inactive", "Inactive",  
                    MessageBoxButtons.OK);  
  }  
  
  // Handler for main menu Exit selection.  
  protected void MMExitClick(object who, EventArgs e) {  
  
    DialogResult result = MessageBox.Show("Stop Program?",  
                            "Terminate",  
                             MessageBoxButtons.YesNo);  
  
    if(result == DialogResult.Yes) Application.Exit();  
  }  
}