www.pudn.com > CS.rar > FormMain.cs

// FormMain.cs - Main form for FindMemoryCard sample. 
// 
// Code from _Programming the .NET Compact Framework with C#_ 
// and _Programming the .NET Compact Framework with VB_ 
// (c) Copyright 2002-2004 Paul Yao and David Durant.  
// All rights reserved. 
 
using System; 
using System.Drawing; 
using System.Collections; 
using System.Windows.Forms; 
using System.Data; 
using System.Runtime.InteropServices; 
 
namespace FindMemoryCard 
{ 
   /// 
 
   /// Summary description for Form1. 
   /// 
 
   public class frmMain : System.Windows.Forms.Form 
   { 
      private System.Windows.Forms.Button cmdFindFirst; 
      private System.Windows.Forms.Button cmdFindNext; 
      private System.Windows.Forms.Button cmdFindClose; 
      private System.Windows.Forms.MainMenu mainMenu1; 
 
      public frmMain() 
      { 
         // 
         // Required for Windows Form Designer support 
         // 
         InitializeComponent(); 
 
         // 
         // TODO: Add any constructor code after InitializeComponent call 
         // 
      } 
      /// 
 
      /// Clean up any resources being used. 
      /// 
 
      protected override void Dispose( bool disposing ) 
      { 
         base.Dispose( disposing ); 
      } 
      #region Windows Form Designer generated code 
      /// 
 
      /// Required method for Designer support - do not modify 
      /// the contents of this method with the code editor. 
      /// 
 
      private void InitializeComponent() 
      { 
         this.mainMenu1 = new System.Windows.Forms.MainMenu(); 
         this.cmdFindFirst = new System.Windows.Forms.Button(); 
         this.cmdFindNext = new System.Windows.Forms.Button(); 
         this.cmdFindClose = new System.Windows.Forms.Button(); 
         //  
         // cmdFindFirst 
         //  
         this.cmdFindFirst.Location = new System.Drawing.Point(32, 48); 
         this.cmdFindFirst.Size = new System.Drawing.Size(176, 20); 
         this.cmdFindFirst.Text = "FindFirstFlashCard()"; 
         this.cmdFindFirst.Click += new System.EventHandler(this.cmdFindFirst_Click); 
         //  
         // cmdFindNext 
         //  
         this.cmdFindNext.Location = new System.Drawing.Point(32, 104); 
         this.cmdFindNext.Size = new System.Drawing.Size(176, 20); 
         this.cmdFindNext.Text = "FindNextFlashCard()"; 
         this.cmdFindNext.Click += new System.EventHandler(this.cmdFindNext_Click); 
         //  
         // cmdFindClose 
         //  
         this.cmdFindClose.Location = new System.Drawing.Point(32, 160); 
         this.cmdFindClose.Size = new System.Drawing.Size(176, 20); 
         this.cmdFindClose.Text = "Call FindClose()"; 
         this.cmdFindClose.Click += new System.EventHandler(this.cmdFindClose_Click); 
         //  
         // frmMain 
         //  
         this.Controls.Add(this.cmdFindClose); 
         this.Controls.Add(this.cmdFindNext); 
         this.Controls.Add(this.cmdFindFirst); 
         this.Menu = this.mainMenu1; 
         this.MinimizeBox = false; 
         this.Text = "FindMemoryCard"; 
 
      } 
      #endregion 
 
      /// 
 
      /// The main entry point for the application. 
      /// 
 
 
      static void Main()  
      { 
         Application.Run(new frmMain()); 
      } 
 
      string strAppName = "FindMemoryCard"; 
 
      IntPtr hffc = new IntPtr(EnumFlash.INVALID_HANDLE_VALUE); 
      EnumFlash.WIN32_FIND_DATA wfd = new EnumFlash.WIN32_FIND_DATA(); 
 
      private void cmdFindFirst_Click(object sender, System.EventArgs e) 
      { 
          hffc = EnumFlash.FindFirstFlashCard (ref wfd); 
          if (hffc.ToInt32() == EnumFlash.INVALID_HANDLE_VALUE) 
              MessageBox.Show("Error in FindMemoryCard()", strAppName);  
          else 
              MessageBox.Show(wfd.cFileName, strAppName); 
      } 
 
      private void cmdFindNext_Click(object sender, System.EventArgs e) 
      { 
         if (hffc.ToInt32() == EnumFlash.INVALID_HANDLE_VALUE) 
            MessageBox.Show("Must first call FindMemoryCard()", strAppName); 
          
         if (EnumFlash.FindNextFlashCard(hffc, ref wfd)) 
            MessageBox.Show(wfd.cFileName, strAppName); 
         else 
            MessageBox.Show("No more flash cards available", strAppName);  
      } 
 
      private void cmdFindClose_Click(object sender, System.EventArgs e) 
      { 
         if (hffc.ToInt32() == EnumFlash.INVALID_HANDLE_VALUE) 
            MessageBox.Show("Must first call FindMemoryCard()", strAppName); 
         else 
         { 
            EnumFlash.FindClose(hffc); 
            hffc = new IntPtr(EnumFlash.INVALID_HANDLE_VALUE); 
         } 
      }  // cmdFindClose_Click 
 
   } // class 
} // namespace