Outlook加载项和Windows窗体协作

Question

I'm developing an outlook add in that collaborates with SharePoint. I've added a new item to the Outlook add in: a Windows Form. When a button is being clicked in the Windows Form, I want to perform an action with Outlook, like this:

Outlook.NameSpace outlookNameSpace = this.Application.GetNamespace("MAPI");

This isn't working, because I'm in the Windows Form instead of in the Outlook Add In. I'm not sure how to let those though collaborate.

Answer 1

Add a new parameter to your WinForm constructor, to receive a reference to the Outlook Application object:

using Outlook = Microsoft.Office.Interop.Outlook;
.
.
.
public partial class MyWinForm : Form
{
    private Outlook.Application m_OutlookApp;

    public MyWinForm(Outlook.Application OutlookApp)
    {
        m_OutlookApp = OutlookApp;

        InitializeComponent();
    }

Your add-in code to launch the form then becomes something like:

MyWinForm myWinForm = new MyWinForm(Application);

myWinForm.Show();

You can then use the Outlook Application within the WinForm:

private void button1_Click(object sender, EventArgs e)
{
    Outlook.NameSpace outlookNameSpace = m_OutlookApp.GetNamespace("MAPI");
    .
    .
    .
}

Answer 2

The Outlook Application object passed to the add-in during initialization is already intrinsically declared in the ThisAddIn class within your VSTO project. You can access it from any other item in the project using Globals.ThisAddIn.Application . You must use this object and not a new Outloook Application object because it won't be fully trusted as it wasn't passed to the add-in initialization by Outlook.

Answer 3

I think you can use something like this below,

var output = Globals.YourAddin.Application.GetNamespace("MAPI");

Hope this helps.