asp.net core - How can I hide files from Solution Explorer by name in VS2015? -

i writing website in vs2015 using asp.net preview template. unfortunately, dropbox has added bunch of .dropbox.attr files in each folder of project, solution explorer displaying:

note have not added them project manually, (they not referenced in web.xproj,) , not have "show files" selected. have added them .gitignore. there no "remove" option when selecting file:

lastly, have tried adding them project.json's exclude section:

...  "publishexclude": [     "node_modules",     "bower_components",     "**.xproj",     "**.user",     "**.vspscc",     ".dropbox.attr" ],  "exclude": [     "wwwroot",     "node_modules",     "bower_components",     ".dropbox.attr" ]  ... 

is there way files name not appear in solution explorer?

i'm not sure of interaction between vs2015 , new project structure, result of of factors.

you can modify .xproj file of project , add following exclude folders:

<itemgroup>     <dnxinvisiblefolder include="wwwroot\jspm_packages\" />     <dnxinvisiblefolder include="wwwroot\node_modules\" />      <dnxinvisiblecontent include="wwwroot\tsd.json" /> </itemgroup> 

you can use dnxinvisiblefolder folders , dnxinvisiblecontent files. folders (like node_modules) have thousands of folders/files seem pose major problem vs2015 scan , load.