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使用 Outlook 加载项，到目前为止一切都按预期工作： - 加载项 - 创建组合框和更改事件处理程序 - 为用户单击新电子邮件时创建事件处理程序

加载项取决于用户在组合框中选择的内容，将加载 HTML 模板或白色模板（只是为了返回原始状态）。

在两个模板之间来回进行几次测试后，不再捕获更改事件。正如您在下面的代码中看到的那样，我使用它来处理更改事件：

cmboBxKeyWord.Change += new CommandBarComboBoxEvents_ChangeEventHandler(cmboBxKeyWord_Change);

这是其余的代码：

    public partial class ThisAddIn
{
    private string templateName = "";
    private string subject="";
    private int messageType;
    private string customerId;
    private CommandBar menuBar;
    private Outlook.Inspectors inspectors;

    StringBuilder sb = new StringBuilder();

    private void ThisAddIn_Startup(object sender, System.EventArgs e)
    {
        CreateControl();

        inspectors = this.Application.Inspectors;
        inspectors.NewInspector += new Microsoft.Office.Interop.Outlook.InspectorsEvents_NewInspectorEventHandler(Inspectors_NewInspector);
    }

    private void CreateControl(){
             menuBar = this.Application.ActiveExplorer().CommandBars.ActiveMenuBar;
            CommandBarComboBox cmboBxKeyWord = (Office.CommandBarComboBox)menuBar.Controls.Add(Office.MsoControlType.msoControlComboBox, missing, missing, 1, true);
            cmboBxKeyWord.AddItem("Template Email");
            cmboBxKeyWord.AddItem("Regular Email");
            cmboBxKeyWord.Change += new _CommandBarComboBoxEvents_ChangeEventHandler(cmboBxKeyWord_Change);
    }

    private void cmboBxKeyWord_Change(CommandBarComboBox Ctrl)
    {

       this.messageType = Ctrl.ListIndex - 1;
       if (this.messageType == 1)
       {
           this.templateName = @"c:\templates\Blank Email.txt";
       }
       else
       {
           this.templateName = @"c:\templates\Template Email.txt";
           this.customerId = Microsoft.VisualBasic.Interaction.InputBox("Enter Customer ID of the customer to which you want to send this email", "Customer ID");

           if (this.customerId == null || this.customerId.Length == 0)
               this.messageType = 1;
       }
    }

    private void Inspectors_NewInspector(Microsoft.Office.Interop.Outlook.Inspector Inspector)
    {
        Outlook.MailItem mailItem = Inspector.CurrentItem as Outlook.MailItem;

        if (mailItem != null)
        {
            if (mailItem.EntryID == null)
            {
                if (this.messageType == 0) //HTML template email not the blank email...
                {

                    mailItem.HTMLBody = getBody(); // the get body is a func that returns string, after fetching data from DB and processing it...nothing magic
                    mailItem.Subject = getSubject();
                }
                else
                {
                    mailItem.HTMLBody = "";
                    mailItem.Subject = "";
                }
            }
        }
    }
}

我怀疑事件处理程序，我的想法是代码继续运行并且事件处理程序总是被添加（+=）从不删除（-=）我只是假设这是因为我对委托/事件处理程序的经验很少。谢谢

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1 回答 1

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CommandBarComboBox cmboBxKeyWord = (Office.CommandBarComboBox)menuBar.Controls.Add(Office.MsoControlType.msoControlComboBox, missing, missing, 1, true);

组合框需要在类外部声明，当过程完成时它超出范围，然后被 GC 收集......

于 2013-03-06T16:39:24.620 回答