C# VS2010扩展中的文本视图语言

我不熟悉为VisualStudio构建加载项，但已经为VS2010构建了一个simpe工具，该工具在当前活动的代码窗口中执行一些文本操作。我需要了解当前文本视图的语言（VB.Net、C#或其他）

我已尝试使用以下代码获取文件名（以便查看扩展名以确定语言）：

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总是返回null。是否有其他方法可以获取文件名/语言？

看起来这样可以：

// 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;

这将返回VB.Net的“Basic”，这正是我需要知道的。

看起来像这样：

// 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;

---

这将返回VB.Net的“Basic”，这正是我需要知道的。

仅供参考，您应该尽量避免使用snapshot.GetText（）。将缓冲区自身转换为一个大字符串（它存储在“片段树”中，而不是作为一个隐藏的字符串）的成本相对较高。仅供参考，您应该尽量避免使用snapshot.GetText（）。将缓冲区自身转换为一个大字符串（它存储在一个“片段树”中，而不是作为一个单独的字符串隐藏）的成本相对较高。