VS2019 : adding or renaming file in asp.net core project terribly slow

Question

When we add a file, create a folder, rename a file or folder it lasts for seconds until this is done.

Even when directly doing those changes on the folder structure, it takes seconds in VS2019 to see them.

In other projects, part of the same solution we do not have this problem.

Any suggestions?

Why not attach a debugger (VS itself will be sufficient) to VS and see what is happening in these slow periods? Alternatively/additionally, attach a Performance Profiler like e.g. [this one](https://www.red-gate.com/products/dotnet-development/ants-performance-profiler/) to VS. — Uwe Keim, Jun 16 '20 at 09:54
I'm doing this since years. Of course you need to start a second instance of VS. — Uwe Keim, Jun 23 '20 at 09:10

score 3 · Answer 1 · answered Jun 16 '20 at 09:39

3

STEP 1 Clear Cache

Win+E to open File Explorer
Click tab "File" and "Change folder and search options"
Click Clear

STEP 2 Minimize Index scope

I. Open Windows Settings and Select "Indexing Options"

II. Click "Modify"

III. Unselect Driver C:// and others

answered Jun 16 '20 at 09:39

Michael Wang

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We already applied this in the past. Not a solution. – BrilBroeder Jun 16 '20 at 09:51
Sorry for not solving your problem. – Michael Wang Jun 17 '20 at 02:20

score 0 · Answer 2 · answered Jun 22 '20 at 23:53

0

You can do the dotnet restore in a command prompt in the web application directory. This solved the long freezes.
Clean this directory:

%SystemRoot%\Microsoft.NET\Framework\versionNumber\Temporary ASP.NET Files

You can exclude extra folders by adding the property to the .csproj file, like <DefaultItemExcludes>$(DefaultItemExcludes);ClientLib\node_modules\**</DefaultItemExcludes>

references here:

https://developercommunity.visualstudio.com/content/problem/35570/create-new-file-and-file-rename-are-extremely-slow.html?page=1&pageSize=10&sort=votes&type=problem

https://learn.microsoft.com/en-us/previous-versions/ms366723(v=vs.140)?redirectedfrom=MSDN#compilation-folder-location

ASP.NET Temporary files cleanup

answered Jun 22 '20 at 23:53

Filipe Piletti Plucenio

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The slowness happens as you have donwnloaded the sources. No caching / temp files involved I guess. – BrilBroeder Jun 23 '20 at 08:06
Is an asp.net core mvc project so no client folders for angular or alike. – BrilBroeder Jun 23 '20 at 08:07
What about other solutions on my post, like dotnet restore, do you try that? – Filipe Piletti Plucenio Jun 24 '20 at 15:53
Was not a solution. – BrilBroeder Jun 02 '21 at 09:13

score 0 · Answer 3 · answered Nov 12 '20 at 04:39

I had slow file add, delete, save, and slow folder add.

I just fixed mine, however my project also has React frontend, the culprit was the "node_modules" folder. I had moved the project from another drive and VS2019 included it as an active folder. Excluding it from the project brought everything back to normal. Since my project is .Net Core 3.1 + React - doing this might serve others - not sure if the OP is using node.js

In Solutions Explore --> Right click node_modules folder --> select "Exclude from Project"

If you are using source control (git) will still work ok as will the rest of your application.

VS2019 : adding or renaming file in asp.net core project terribly slow

3 Answers3