VS2015 Formatting code on save

Question

I spent 30 minutes trying to make a GIF capture of this small enough to embed in the question but I couldn't get below 3MB and it became unintelligible, so the full capture is here .

I have a large ASPX file. When I click Edit > Advanced > Format document it gives me this section:

    </asp:HyperLink></h3>
<asp:UpdatePanel 

And when I save the document, it reformats to this:

    </asp:HyperLink></h3><asp:UpdatePanel ...

Honestly both annoy me, but unless I explicitly format I don't get the former. However sometimes when I save, it formats to the latter. This is just one example, it mangles the file in many places. Like going from this:

                        </td>
                    </tr>
                </table>
            </div>
        </ContentTemplate>
    </asp:UpdatePanel>
</div>
<asp:UpdatePanel ...

To this:

</asp:HyperLink></td></tr></table></div></ContentTemplate></asp:UpdatePanel></div><asp:UpdatePanel ...ny places.

I have ReSharper installed, but I have suspended it for this test to rule it out.

So the question is 2 parts:

1. Why does VS format in 2 different ways, depending on whether it's trigger by a request to format or a save, and
2. How do I disable this format on save? I can only find options for VSCode, this is VS 2015 Community.

Answer 1

Check the other Visual Studio Extensions that you have installed. There might be one (or perhaps even several) which performs custom code formatting on a file save operation.