今天没事，看到一个用C#开发OutLook插件的例子，顺便自己做了一个
用C#开发OutLook插件引言：
我们可以用VS.Net 2003开发OutLook插件，把自己的代码集成到OutLook中去。比如说我们可以在简单做一个邮件的统计功能。
软件原理：
利用C#调用Office的接口
代码实现：
1． 我们新建一个addin项目
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这样我们根据.net的向导就自动生成了插件项目。
2． 如果你的应用程序中没有自动引用Microsoft.Office.Interop.Outlook.dll，那么我们手工来添加Microsoft.Office.Interop.Outlook.dll到引用中
3． 最终的界面：
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Connect.cs最后的代码：
namespace EmailSum
{
using System;
using Microsoft.Office.Core;
using Extensibility;
using System.Runtime.InteropServices;
using Microsoft.Office.Interop.Outlook;
#region Read me for Add-in installation and setup information.
// When run, the Add-in wizard prepared the registry for the Add-in.
// At a later time, if the Add-in becomes unavailable for reasons such as:
// 1) You moved this project to a computer other than which is was originally created on.
// 2) You chose 'Yes' when presented with a message asking if you wish to remove the Add-in.
// 3) Registry corruption.
// you will need to re-register the Add-in by building the MyAddin21Setup project
// by right clicking the project in the Solution Explorer, then choosing install.
#endregion
/// <summary>
/// The object for implementing an Add-in.
/// </summary>
/// <seealso class='IDTExtensibility2' />
public class Connect : Object, Extensibility.IDTExtensibility2
{
private Microsoft.Office.Interop.Outlook.Application
applicationObject;
private object addInInstance;
private CommandBarButton btnGetEMailStats;
/// <summary>
///Implements the constructor for the Add-in object.
///Place your initialization code within this method.
/// </summary>
public Connect()
{
}
/// <summary>
/// Implements the OnConnection method of the IDTExtensibility2 interface.
/// Receives notification that the Add-in is being loaded.
/// </summary>
/// <param term='application'>
/// Root object of the host application.
/// </param>
/// <param term='connectMode'>
/// Describes how the Add-in is being loaded.
/// </param>
/// <param term='addInInst'>
/// Object representing this Add-in.
/// </param>
/// <seealso class='IDTExtensibility2' />
public void OnConnection(object application, Extensibility.ext_ConnectMode connectMode, object addInInst, ref System.Array custom)
{
applicationObject = (Microsoft.Office.Interop.Outlook.Application)
application;
addInInstance = addInInst;
}
/// <summary>
/// Implements the OnDisconnection method of the IDTExtensibility2 interface.
/// Receives notification that the Add-in is being unloaded.
/// </summary>
/// <param term='disconnectMode'>
/// Describes how the Add-in is being unloaded.
/// </param>
/// <param term='custom'>
/// Array of parameters that are host application specific.
/// </param>
/// <seealso class='IDTExtensibility2' />
public void OnDisconnection(Extensibility.ext_DisconnectMode disconnectMode, ref System.Array custom)
{
if(disconnectMode !=
ext_DisconnectMode.ext_dm_HostShutdown)
{
OnBeginShutdown(ref custom);
}
applicationObject = null;
}
/// <summary>
/// Implements the OnAddInsUpdate method of the IDTExtensibility2 interface.
/// Receives notification that the collection of Add-ins has changed.
/// </summary>
/// <param term='custom'>
/// Array of parameters that are host application specific.
/// </param>
/// <seealso class='IDTExtensibility2' />
public void OnAddInsUpdate(ref System.Array custom)
{
}
/// <summary>
/// Implements the OnStartupComplete method of the IDTExtensibility2 interface.
/// Receives notification that the host application has completed loading.
/// </summary>
/// <param term='custom'>
/// Array of parameters that are host application specific.
/// </param>
/// <seealso class='IDTExtensibility2' />
public void OnStartupComplete(ref System.Array custom)
{
CommandBars commandBars =
applicationObject.ActiveExplorer().CommandBars;
try
{
// If our button is already
// on the Standard CommandBar, use it.
btnGetEMailStats = (CommandBarButton)
commandBars["Standard"].Controls["Email统计"];
}
catch
{
// OOPS!Our button is not there, so
// we need to make a new instance.
// Note that the Add() method was
// defined to take optional parameters,
// which are not supported in C#.
// Thus we must specify Missing.value.
btnGetEMailStats = (CommandBarButton)
commandBars["Standard"].Controls.Add(1,
System.Reflection.Missing.value,
System.Reflection.Missing.value,
System.Reflection.Missing.value,
System.Reflection.Missing.value);
btnGetEMailStats.Caption = "Email统计";
btnGetEMailStats.Style = MsoButtonStyle.msoButtonCaption;
}
// Setting the Tag property is not required, but can be used
// to quickly reterive your button.
btnGetEMailStats.Tag = "Email统计";
// Setting OnAction is also optional, however if you specify
// the ProgID of the Add-in, the host will automatically
// load the Add-in if the user clicks on the CommandBarButton when
// the Add-in is not loaded. After this point, the Click
// event handler is called.
btnGetEMailStats.OnAction = "!<EMailStatsAddIn.Connect>";
btnGetEMailStats.Visible = true;
// Rig-up the Click event for the new CommandBarButton type.
btnGetEMailStats.Click += new
_CommandBarButtonEvents_ClickEventHandler(
btnGetEMailStats_Click);
}
private void btnGetEMailStats_Click(CommandBarButton Ctrl,
ref bool CancelDefault)
{
string statInfo;
DateTime today = DateTime.Today;
// The stats we are tracing.
int eMailsToday = 0;
int eMailsThisMonth = 0;
int eMailSentToday = 0;
int eMailSentThisMonth = 0;
// Get items in user's inbox.
NameSpace outlookNS = applicationObject.GetNamespace("MAPI");
MAPIFolder inboxFolder
= outlookNS.GetDefaultFolder(OlDefaultFolders.olFolderInbox);
// Compare time received to current day / month
// and update our counters.
foreach(object item in inboxFolder.Items)
{
MailItem mi = item as MailItem;
if(mi != null)
{
if(mi.ReceivedTime.Day == today.Day)
eMailsToday++;
if(mi.ReceivedTime.Month == today.Month)
eMailsThisMonth++;
}
}
// Build first part of statInfo string.
statInfo = string.Format("今天收到Email: {0}\n",
eMailsToday);
statInfo += string.Format("这个月收到Email: {0}\n",
eMailsThisMonth);
statInfo += "--------------------------------------\n";
// Get items in user's sent item folder and
// test again.
MAPIFolder SentFolder =
outlookNS.GetDefaultFolder(OlDefaultFolders.olFolderSentMail);
foreach(object item in SentFolder.Items)
{
// See if current item is a MailItem
MailItem mi = item as MailItem;
if(mi != null)
{
// It is, so get day/month stats.
if(mi.SentOn.Day == today.Day)
eMailSentToday++;
if(mi.SentOn.Month == today.Month)
eMailSentThisMonth++;
}
}
// Build last part of statInfo string.
statInfo += string.Format("今天发送Email: {0}\n",
eMailSentToday);
statInfo += string.Format("这个月发送Email: {0}\n",
eMailSentThisMonth);
// Show results.
System.Windows.Forms.MessageBox.Show(statInfo, "Email统计结果：");
}
/// <summary>
/// Implements the OnBeginShutdown method of the IDTExtensibility2 interface.
/// Receives notification that the host application is being unloaded.
/// </summary>
/// <param term='custom'>
/// Array of parameters that are host application specific.
/// </param>
/// <seealso class='IDTExtensibility2' />
public void OnBeginShutdown(ref System.Array custom)
{
CommandBars commandBars =
applicationObject.ActiveExplorer().CommandBars;
try
{
// Find our button and kill it.
commandBars["Standard"].Controls["GetEMailStats"].Delete(
System.Reflection.Missing.value);
}
catch(System.Exception ex)
{System.Windows.Forms.MessageBox.Show(ex.Message);}
}
//private object applicationObject;
//private object addInInstance;
}
}
4． 我们运行安装程序，然后打开outlook我们可以看到：
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点击按钮，可以看到结果：
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总结：
我们还可以在word、access等office软件实现相似的功能。
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