開啟並顯示 iCalendar 檔案的內容

這個範例示範如何開啟和顯示 iCalendar 檔案的內容，視檔案是否包含單一或週期性約會，或檔案包含一組約會而定。

範例

此程式代碼範例會先嘗試使用 NameSpace 物件的 OpenSharedItem 方法，以單一約會 iCalendar 檔案開啟 iCalendar 檔案。 如果成功，它會在偵測器視窗中顯示約會專案詳細數據。 不過，它不會將專案複製到預設存放區。 如果範例無法以單一約會 iCalendar 檔案開啟檔案，則會使用 NameSpace 物件的 OpenSharedFolder 方法，嘗試將內容匯入為預設存放區中的新行事曆。 如果匯入成功，則會在總管視窗中顯示行事曆。

此程式代碼範例會使用建立協助 程序類別以存取一般 Outlook 專案成員中定義的 OutlookItem 協助程式類別，方便地呼叫 OutlookItem.Display 方法來顯示約會專案，而不需要先轉換專案。

If you use Visual Studio to test this code example, you must first add a reference to the Microsoft Outlook 15.0 Object Library component and specify the Outlook variable when you import the Microsoft.Office.Interop.Outlook namespace. The Imports or using statement must not occur directly before the functions in the code example but must be added before the public Class declaration. The following lines of code show how to do the import and assignment in Visual Basic and C#.

Imports Outlook = Microsoft.Office.Interop.Outlook

using Outlook = Microsoft.Office.Interop.Outlook;

Private Sub OpenICalendarFile(ByVal fileName As String)
    If String.IsNullOrEmpty(fileName) Then
        Throw New ArgumentException(_
        "Parameter must contain a value.", "exportFileName")
    End If
    If Not File.Exists(fileName) Then
        Throw New FileNotFoundException(fileName)
    End If

    '' First try to open the icalendar file as an appointment 
    '' (not a calendar folder).
    Dim item As Object = Nothing
    Try
         item = Application.Session.OpenSharedItem(fileName)
    Catch
    End Try

    If Not item Is Nothing Then
        '' Display the item
        Dim olItem As OutlookItem = New OutlookItem(item)
        olItem.Display()
        Return
    End If

    '' If unsucessful in opening it as an item, 
    '' try opening it as a folder
    Dim importedFolder As Outlook.Folder = Nothing
    Try
        importedFolder = TryCast( _
            Application.Session.OpenSharedFolder(fileName), _
            Outlook.Folder)
    Catch
    End Try

    '' If sucessful, open the folder in a new explorer window
    If Not importedFolder Is Nothing Then
        Dim explorer As Outlook.Explorer = _
            Application.Explorers.Add( _
            importedFolder, _
            Outlook.OlFolderDisplayMode.olFolderDisplayNormal)
        explorer.Display()
    End If
End Sub

private void OpenICalendarFile(string fileName)
{
    if (string.IsNullOrEmpty(fileName))
        throw new ArgumentException("exportFileName", 
        "Parameter must contain a value.");
    if (!File.Exists(fileName))
        throw new FileNotFoundException(fileName);

    // First try to open the icalendar file as an appointment 
    // (not a calendar folder).
    object item = null;
    try
    {
        item = Application.Session.OpenSharedItem(fileName);
    }
    catch
    { }

    if (item != null)
    {
         // Display the item
         OutlookItem olItem = new OutlookItem(item);
         olItem.Display();
         return;
    }

    // If unsucessful in opening it as an item, 
    // try opening it as a folder
    Outlook.Folder importedFolder = null;
    try
    {
        importedFolder = Application.Session.OpenSharedFolder(
            fileName, Type.Missing, Type.Missing, Type.Missing) 
            as Outlook.Folder;
    }
    catch
    { }

    // If sucessful, open the folder in a new explorer window
    if (importedFolder != null)
    {
        Outlook.Explorer explorer =
            Application.Explorers.Add(importedFolder, 
            Outlook.OlFolderDisplayMode.olFolderDisplayNormal);
        explorer.Display();
    }
}

另請參閱

• Calendar