clang-format_on-save_VS2017.md

 # Setting up clang-format to format on save in VisualStudio 2017 
+* **Step 1** 
+Install the ClangFormat and Visual Commander Extensions for Visual Studio
+Go to **Tools -> Extensions and Updates** and search for the Extensions under the Online tab.
+An already existing Clang Format Installation outside of Visual Studio is not sufficient; Visual Studio still needs the Extension.
+
+* **Step 2**
+Visual Commander allows the user to create Extensions for Visual Studio. Go to the new VCmd tab in Visual Studio and select Extensions. Select **Add** in the Extensions area and **Edit** on the newly created extension. You can give the Extension a name like "clang_on_save", but what's important is making sure the language is set to C#. Copy the following code into the extension:
+```
+using EnvDTE;
+using EnvDTE80;
+
+public class E : VisualCommanderExt.IExtension
+{
+  public void SetSite(EnvDTE80.DTE2 DTE_, Microsoft.VisualStudio.Shell.Package package)
+  {
+    DTE = DTE_;
+    events = DTE.Events;
+    documentEvents = events.DocumentEvents;
+    documentEvents.DocumentSaved += OnDocumentSaved;  
+  }
+
+  public void Close()
+  {
+    documentEvents.DocumentSaved -= OnDocumentSaved;
+  }
+
+  private void OnDocumentSaved(EnvDTE.Document doc)
+  {
+    if(doc.Language == "C/C++")
+    {       
+      DTE.ExecuteCommand("Tools.ClangFormatDocument");
+    }
+  }
+
+  private EnvDTE80.DTE2 DTE;
+  private EnvDTE.Events events;
+  private EnvDTE.DocumentEvents documentEvents;
+}
+```
+Then hit **Save**, **Compile** and **Install**. Visual Studio should now apply Clang Format to any C and C++ documents upon saving them.
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