sendmailform.cs

点对点通信的资料 是论文加程序性质的 计算机网络方向的

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Net ;
using System.Net .Sockets ;
using MailSend;
using System.Data ;
using System.Runtime .InteropServices ;
namespace MailManageSystem
{
	/// <summary>
	/// Send 的摘要说明。
	/// </summary>
	public class SendMailForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.MenuItem menuItem6;
		private System.Windows.Forms.MenuItem menuItem7;
		private System.Windows.Forms.MenuItem menuItem8;
		private System.ComponentModel.IContainer components;
		private System.Windows.Forms.OpenFileDialog openFileDialog1;//语言编码 

		private System.Windows.Forms.ToolBar toolBar1;
		private System.Windows.Forms.ToolBarButton tbSend;
		private System.Windows.Forms.ToolBarButton tbSave;
		private System.Windows.Forms.ToolBarButton toolBarButton1;
		private System.Windows.Forms.ToolBarButton tbAttachment;
		private System.Windows.Forms.SaveFileDialog saveFileDialog1;
		private System.Windows.Forms.ImageList imlSendMail;
		private System.Windows.Forms.ImageList imlAttachment;
		private System.Windows.Forms.ContextMenu conAttachment;
		private System.Windows.Forms.MenuItem menuItem9;
		private System.Windows.Forms.MenuItem menuItem10;
		private System.Windows.Forms.MenuItem menuItem11;
		private System.Windows.Forms.MenuItem menuItem12;
		private System.Windows.Forms.MenuItem menuItem13;
		private System.Windows.Forms.MenuItem menuItem14;
		private System.Windows.Forms.MenuItem menuItem15;
		private System.Windows.Forms.MenuItem menuItem16;
		private System.Windows.Forms.MenuItem menuItem17;
		private System.Windows.Forms.GroupBox groupBox2;
		private System.Windows.Forms.TextBox txtTo;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox txtSubject;
		private System.Windows.Forms.Splitter splitter1;
		private System.Windows.Forms.Panel panel1;
		private System.Windows.Forms.RichTextBox txtMessage;
		private ArrayList array=new ArrayList ();
		private System.Windows.Forms.ListView ltAttachment;
		private System.Windows.Forms.ComboBox cbHtml;

		int i = 0;

		//EntryPoint 给出Dll入口点的名称，如果没有给出，则用方法本身的名称。
		[DllImport("shell32.dll",EntryPoint="ShellExecute")]

		private static extern int ShellExecute(IntPtr hwnd, string lpOperation,string lpFile, string lpParameters, string lpDirectory, int nShowCmd);



		//函数SHGetFileInfo()的返回值也随uFlags的取值变化而有所不同。
		//通过调用SHGetFileInfo()可以由psfi参数得到文件的图标句柄，但要注意在uFlags参数中不使用SHGFI_PIDL时，SHGetFileInfo()不能获得"我的电脑"等虚似文件夹的信息。

		[DllImport("Shell32.dll")]
		private static extern int SHGetFileInfo(string pszPath, uint dwFileAttributes, ref SHFILEINFO psfi, uint cbFileInfo, SHGFI uFlags);


		[StructLayout(LayoutKind.Sequential)]
		private struct SHFILEINFO
		{
			//重载一个构造函数
			public SHFILEINFO(bool b)
			{
				hIcon = IntPtr.Zero ; iIcon = 0; dwAttributes = 0; szDisplayName = ""; szTypeName = "";
			}
			public IntPtr hIcon;
			public int iIcon;
			public uint dwAttributes;
			[MarshalAs(UnmanagedType.LPStr, SizeConst =256)]
			public string szDisplayName;
			[MarshalAs(UnmanagedType.LPStr, SizeConst = 80)]
			public string szTypeName;
		};

		//图标类型的结构体
		private enum SHGFI
		{
			SHGFI_ICON            =0x000000100,     // get icon
			SHGFI_DISPLAYNAME     =0x000000200,     // get display name
			SHGFI_TYPENAME        =0x000000400,     // get type name
			SHGFI_ATTRIBUTES      =0x000000800,     // get attributes
			SHGFI_ICONLOCATION    =0x000001000,     // get icon location
			SHGFI_EXETYPE         =0x000002000,     // return exe type
			SHGFI_SYSICONINDEX	  =0x000004000,     // get system icon index
			SHGFI_LINKOVERLAY     =0x000008000,     // put a link overlay on icon
			SHGFI_SELECTED        =0x000010000,     // show icon in selected state
			SHGFI_ATTR_SPECIFIED  =0x000020000,     // get only specified attributes
			SHGFI_LARGEICON       =0x000000000,     // get large icon
			SHGFI_SMALLICON       =0x000000001,     // get small icon
			SHGFI_OPENICON        =0x000000002,     // get open icon
			SHGFI_SHELLICONSIZE   =0x000000004,     // get shell size icon
			SHGFI_PIDL			  =0x000000008,     // pszPath is a pidl
			SHGFI_USEFILEATTRIBUTES     =0x000000010,     // use passed dwFileAttribute
			SHGFI_ADDOVERLAYS           =0x000000020,     // apply the appropriate overlays
			SHGFI_OVERLAYINDEX          =0x000000040     // Get the index of the overlay

		}

		/// <summary>
		/// 调用获的程序图标句柄的函数
		/// </summary>
		/// <param name="strPath">选定程序的绝对路径</param>
		/// <returns></returns>

		private  static Icon GetIcon(string strPath)
		{
			try
			{
				SHFILEINFO info = new SHFILEINFO();
				int cbFileInfo = Marshal.SizeOf(info);
				SHGFI flags;
			
				flags = SHGFI.SHGFI_ICON|SHGFI.SHGFI_LARGEICON|SHGFI.SHGFI_ATTRIBUTES|SHGFI.SHGFI_EXETYPE;

				SHGetFileInfo(strPath, 32|0, ref  info,(uint)cbFileInfo,flags);
				return Icon.FromHandle(info.hIcon);
			}
			catch(Exception ex)
			{
				MessageBox.Show (ex.ToString ());
				return null;
			}
		}
			

		




		
   
		
		

		public SendMailForm()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(SendMailForm));
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.menuItem8 = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.menuItem5 = new System.Windows.Forms.MenuItem();
			this.menuItem6 = new System.Windows.Forms.MenuItem();
			this.menuItem7 = new System.Windows.Forms.MenuItem();
			this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
			this.toolBar1 = new System.Windows.Forms.ToolBar();
			this.tbSend = new System.Windows.Forms.ToolBarButton();
			this.tbSave = new System.Windows.Forms.ToolBarButton();
			this.toolBarButton1 = new System.Windows.Forms.ToolBarButton();
			this.tbAttachment = new System.Windows.Forms.ToolBarButton();
			this.imlSendMail = new System.Windows.Forms.ImageList(this.components);
			this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
			this.imlAttachment = new System.Windows.Forms.ImageList(this.components);
			this.conAttachment = new System.Windows.Forms.ContextMenu();
			this.menuItem9 = new System.Windows.Forms.MenuItem();
			this.menuItem10 = new System.Windows.Forms.MenuItem();
			this.menuItem11 = new System.Windows.Forms.MenuItem();
			this.menuItem12 = new System.Windows.Forms.MenuItem();
			this.menuItem13 = new System.Windows.Forms.MenuItem();
			this.menuItem14 = new System.Windows.Forms.MenuItem();
			this.menuItem15 = new System.Windows.Forms.MenuItem();
			this.menuItem17 = new System.Windows.Forms.MenuItem();
			this.menuItem16 = new System.Windows.Forms.MenuItem();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			this.cbHtml = new System.Windows.Forms.ComboBox();
			this.txtTo = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.txtSubject = new System.Windows.Forms.TextBox();
			this.ltAttachment = new System.Windows.Forms.ListView();
			this.splitter1 = new System.Windows.Forms.Splitter();
			this.panel1 = new System.Windows.Forms.Panel();
			this.txtMessage = new System.Windows.Forms.RichTextBox();
			this.groupBox2.SuspendLayout();
			this.panel1.SuspendLayout();
			this.SuspendLayout();
			// 
			// mainMenu1
			// 
			this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem1,
																					  this.menuItem5,
																					  this.menuItem6});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem2,
																					  this.menuItem3,
																					  this.menuItem8,
																					  this.menuItem4});
			this.menuItem1.Text = "邮件(M)";
			// 
			// menuItem2
			// 
			this.menuItem2.Index = 0;
			this.menuItem2.Text = "立即发送";
			this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
			// 
			// menuItem3
			// 
			this.menuItem3.Index = 1;
			this.menuItem3.Text = "草稿";
			// 
			// menuItem8
			// 
			this.menuItem8.Index = 2;
			this.menuItem8.Text = "-";
			// 
			// menuItem4
			// 
			this.menuItem4.Index = 3;
			this.menuItem4.Text = "退出";
			this.menuItem4.Click += new System.EventHandler(this.menuItem4_Click);
			// 
			// menuItem5
			// 
			this.menuItem5.Index = 1;
			this.menuItem5.Text = "";
			// 
			// menuItem6
			// 
			this.menuItem6.Index = 2;
			this.menuItem6.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					  this.menuItem7});
			this.menuItem6.Text = "插入(I)";
			// 
			// menuItem7
			// 
			this.menuItem7.Index = 0;
			this.menuItem7.Text = "增加附件";
			this.menuItem7.Click += new System.EventHandler(this.menuItem7_Click);
			// 
			// toolBar1
			// 
			this.toolBar1.Appearance = System.Windows.Forms.ToolBarAppearance.Flat;
			this.toolBar1.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
																						this.tbSend,
																						this.tbSave,
																						this.toolBarButton1,
																						this.tbAttachment});
			this.toolBar1.ButtonSize = new System.Drawing.Size(100, 80);
			this.toolBar1.DropDownArrows = true;
			this.toolBar1.Font = new System.Drawing.Font("宋体", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
			this.toolBar1.ImageList = this.imlSendMail;
			this.toolBar1.Location = new System.Drawing.Point(0, 0);
			this.toolBar1.Name = "toolBar1";
			this.toolBar1.ShowToolTips = true;
			this.toolBar1.Size = new System.Drawing.Size(800, 41);
			this.toolBar1.TabIndex = 3;
			this.toolBar1.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.toolBar1_ButtonClick);
			// 
			// tbSend
			// 
			this.tbSend.ImageIndex = 0;
			this.tbSend.Text = "发送";
			// 
			// tbSave
			// 
			this.tbSave.ImageIndex = 1;
			this.tbSave.Text = "保存";
			// 
			// toolBarButton1
			// 
			this.toolBarButton1.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
			// 
			// tbAttachment
			// 
			this.tbAttachment.ImageIndex = 2;
			this.tbAttachment.Text = "附件";
			// 
			// imlSendMail
			// 
			this.imlSendMail.ImageSize = new System.Drawing.Size(16, 16);
			this.imlSendMail.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imlSendMail.ImageStream")));
			this.imlSendMail.TransparentColor = System.Drawing.Color.Transparent;
			// 
			// imlAttachment
			// 
			this.imlAttachment.ImageSize = new System.Drawing.Size(16, 16);
			this.imlAttachment.TransparentColor = System.Drawing.Color.Transparent;
			// 
			// conAttachment
			// 
			this.conAttachment.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																						  this.menuItem9,
																						  this.menuItem10,
																						  this.menuItem11,
																						  this.menuItem12,
																						  this.menuItem13,
																						  this.menuItem14});
			// 
			// menuItem9
			// 
			this.menuItem9.Index = 0;
			this.menuItem9.Shortcut = System.Windows.Forms.Shortcut.Alt0;
			this.menuItem9.Text = "增加(A)...";
			this.menuItem9.Click += new System.EventHandler(this.menuItem9_Click_1);
			// 
			// menuItem10
			// 
			this.menuItem10.Index = 1;
			this.menuItem10.Shortcut = System.Windows.Forms.Shortcut.Alt1;
			this.menuItem10.Text = "删除(D)...";
			this.menuItem10.Click += new System.EventHandler(this.menuItem10_Click);
			// 
			// menuItem11
			// 
			this.menuItem11.Index = 2;
			this.menuItem11.Text = "-";
			// 
			// menuItem12
			// 
			this.menuItem12.Index = 3;
			this.menuItem12.Shortcut = System.Windows.Forms.Shortcut.Alt2;
			this.menuItem12.Text = "打开(O)...";
			this.menuItem12.Click += new System.EventHandler(this.menuItem12_Click);
			// 
			// menuItem13
			// 
			this.menuItem13.Index = 4;
			this.menuItem13.Text = "-";
			// 
			// menuItem14
			// 
			this.menuItem14.Index = 5;
			this.menuItem14.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																					   this.menuItem15,
																					   this.menuItem17,
																					   this.menuItem16});
			this.menuItem14.Text = "排列图标(V)...";
			// 
			// menuItem15