語言在VS2010中的文本查看擴展

Question

我是新來Visual Studio的構建插件，但已設法爲VS2010構建一個簡單的工具，在當前活動的代碼窗口中進行一些文本操作。我已經到了需要了解當前文本視圖的語言（VB.Net，C＃或其他）的地步。

我試圖讓文件名（這樣我就可以看擴展名來確定語言）使用下面的代碼：

IVsTextManager txtMgr = (IVsTextManager)GetService(typeof(SVsTextManager)); 
int mustHaveFocus = 1;//means true 
txtMgr.GetActiveView(mustHaveFocus, null, out currentTextView); 

userData = currentTextView as IVsUserData; 
if (userData == null)// no text view 
{ 
    Console.WriteLine("No text view is currently open"); 
    return; 
} 

object pathAsObject; 
Guid monikerGuid = typeof(IVsUserData).GUID; 
userData.GetData(ref monikerGuid, out pathAsObject); 
string docPath = (string)pathAsObject; 

不幸的是pathAsObject總是返回null。有沒有其他的方式來獲得文件名/語言？

Answer 1

看起來是這樣工作的：

// Get the current text view. 
IVsTextManager txtMgr = (IVsTextManager)GetService(typeof(SVsTextManager)); 
int mustHaveFocus = 1;//means true 
txtMgr.GetActiveView(mustHaveFocus, null, out currentTextView); 

userData = currentTextView as IVsUserData; 
if (userData == null)// no text view 
{ 
    Console.WriteLine("No text view is currently open"); 
    return; 
} 

// In the next 4 statments, I am trying to get access to the editor's view 
object holder; 
Guid guidViewHost = DefGuidList.guidIWpfTextViewHost; 
userData.GetData(ref guidViewHost, out holder); 
viewHost = (IWpfTextViewHost)holder; 

// Get a snapshot of the current editor's text. 
allText = viewHost.TextView.TextSnapshot.GetText(); 

// Get the language for the current editor. 
string language = viewHost.TextViewtextView.TextDataModel.ContentType.TypeName; 

這將返回「基本」爲VB.Net，而這正是我需要知道。