.NET 在 Office 2010 中创建带附件的电子邮件

Question

我知道通过 mailto 链接，您可以打开默认邮件客户端并填充主题和标题。我需要做类似的事情，但还要附上一份文件。

我的所有用户都将使用 Outlook 2010，并将其设置为默认邮件客户端。它只需要适用于这种情况。

如何创建打开 Outlook 新邮件窗口并填充附件字段的电子邮件？

Answer 1

您需要对 Outlook COM 库的引用，然后类似的内容应该可以工作：

    /// <summary>
    /// Get Application Object
    /// </summary>
    public static OL.Application Application
    {
        get
        {
            try
            {
                return Marshal.GetActiveObject("Outlook.Application") as OL.Application;
            }
            catch (COMException)
            {
                return new OL.Application();
            }
        }
    }

    /// <summary>
    /// Prepare An Email In Outlook
    /// </summary>
    /// <param name="ToAddress"></param>
    /// <param name="Subject"></param>
    /// <param name="Body"></param>
    /// <param name="Attachment"></param>
    public static void CreateEmail(string ToAddress, string Subject, string Body, string AttachmentFileName)
    {
        //Create an instance of Outlook (or use existing instance if it already exists
        var olApp = Application;

        // Create a mail item
        var olMail = olApp.CreateItem(OL.OlItemType.olMailItem) as OL.MailItem;
        olMail.Subject = Subject;
        olMail.To = ToAddress;

        // Set Body
        olMail.Body = Body;

        // Add Attachment
        string name = System.IO.Path.GetFileName(AttachmentFileName);
        olMail.Attachments.Add(AttachmentFileName, OL.OlAttachmentType.olByValue, 1, name);

        // Display Mail Window
        olMail.Display();
    }

为此，您还需要：

using System.Runtime.InteropServices;
using OL = Microsoft.Office.Interop.Outlook;