I just re-installed windows, got visual studio back on it, cloned it from my github repo. And all of a sudden I can't see my preview design screen anymore. Tried a bunch of things already.
I got the lates jdk,
got the latest xamarin nuget packages.
Restarted VS,
rebuild/ clean solution
Got into my tools > options > xamarin, did see the option for splitview, but no matter what. it didnt bring it. I can't even see the 3 buttons for preview, split vertical and split horizontal.
Screenshot of visual studio window where the buttons are missing
if anyone knows the solutions i would be very happy to know, makes the desigining way easier instead of always building the project to see the change, even with hot reload on
After set the settings in Tools > Options > Xamarin > Xamarin.Forms XAML Previewer dialog, you need to restart the Visual Studio.
If it still does not work when you create a new project, you could right click the content page, select the View Designer. It was able to open the previewer.
Updated:
The XAML Previewer has been deprecated in Visual Studio 2019 version 16.8 and Visual Studio for Mac version 8.8, and replaced by the XAML Hot Reload feature in Visual Studio 2019 version 16.9 and Visual Studio for Mac version 8.9.
For now, I use the Hot Reload insead and provide a live visual tree to receive a real-time view of your running XAML code. It shows a tree view of the UI elements of your running Xamarin.Forms application.
When you debug you project, by default, it appears on the IDE's left. If you don't see it, use Debug > Windows > Live Visual Tree to show it.
you can choice Tools > Options > XAML Designer > General > Default document view > Split View in Visual Studio 19.9 or later.
When I want to edit C# Unity scripts, they open in Visual Studio. It is supposed to provide auto complete for all Unity related code, but it doesn't work.
Here you can see the missing functionality:
As seen, the transform object does not open the autocomplete menu.
Unity version: 5.5.2f1
Visual studio 2015
Visual Studio Tools for Unity is installed
There is no auto-completion because the script says "Miscellaneous Files" instead of the of the name of the Project. Take a look at the image below that came from the video in your question:
The "Miscellaneous Files" message can happen for many reasons:
It can happen when you open your Unity C# file from another folder instead of opening it from Unity Editor.
This can also happen because Unity crashed while Visual Studio is still open therefore corrupting some files.
It can happen because Unity was closed then re-opened but is no longer connected to Visual Studio. When Visual Studio is opened you get "Miscellaneous Files" and no auto-completion.
This can happen when Visual Studio Tools for unity is not installed.
When you create a script from Unity then quickly open it before Unity finish processing it or before the round icon animation stuff finish animating.
Most of the times, restarting Unity and Visual Studio should fix this.
I can't tell which one is causing the problem but I will cover the most likely solution to fix this.
Fix Part 1:
Download and Install Visual Studio Tools for unity from this link. Do this while Unity and Visual Studio are both closed.
From Unity Editor, go to Edit → Preferences... → External Tools. On the External Script Editor drop down menu, change that to Visual Studio 2015.
Fix Part 2:
If newly created C# files are coming up as Miscellaneous then follow the instruction below:
From Visual Studio, go to Tools → Options... → Tools for Unity → Miscellaneous. Under Show connectivity icon, set it to true then restart Visual Studio.
When you re-start, connection icon should now be available in Visual Studio. Click it then choose the Unity instance to connect to. The red 'x' icon should now turn into a brown checkmark icon. Now, when you create a new C# file in Unity, it should open without saying Miscellaneous.
Fix Part 3:
Still not fixed?
Re-import project then open C# Project.
Close Visual Studio.
From Unity, re-import project by going to Assets → Reimport All.
Now, open the project in Visual Studio by going to Assets → Open C# Project. This will reload the project and fix possible solution file problems.
Fix Part 4:
Still not fixed?
Fix each C# file individually.
Click on Show All Files icon.
Select the script that doesn't do auto-complete then right-click and select Include In Project.
Fix Part 5:
Not fixed yet?
Credit goes to chrisvarnz for this particular solution which seems to have worked for multiple people.
Close Visual Studio
Go your project directory and delete all the generated Visual Studio files.
These are the files extensions to delete:
.csproj
.user
.sln
Example:
Let's say that the name of your Project is called Target_Shoot, these are what the files to delete should look like:
Target_Shoot.csproj
Target_Shoot.Editor.csproj
Target_Shoot.Editor.csproj.user
Target_Shoot.Player.csproj
Target_Shoot.Player.csproj.user
Target_Shoot.sln
Do not delete anything else.
Double click on the script again from Unity which should generate new Visual Studio file then open Visual Studio. This may solve your problem.
Fix Part 6:
If not working, check if you are having this error:
The "GetReferenceNearestTargetFrameworkTask" task was not found
Install Nuget PackageManager from here.
Restart Visual Studio.
See this answer for more information.
Fix Part 7
Make sure all of the projects are loaded.
In Solution Explorer it should tell you # of # projects.
If all of the projects are not showing, right click on "Solution (# of # projects)" and click Load Projects.
Try this,
In Unity Editor Go to Menu, Click on Edit -> Preferences -> External Tools -> External Script Editor. Set it to Visual Studio (your installed version of VS).
Now in Menubar go to Edit -> Project Settings -> Player Settings -> Other Settings -> Under Configuration -> Check API Compatibility Level -> Change it to your installed .Net version. In my case I set it to .Net 4.x
Now if Visual Studio is running already go to Visual Studio, it will ask to reload project. Reload the project. Check if it works, if not close Visual Studio. Now Open cs file from Unity Editor, and now it should work.
I found another way to fix this issue in a more convenient manner:
Select the broken file in Solution Explorer.
Open its Properties.
Switch field "Build Action" from "Compile" to "None".
Then switch it back to "Compile".
This will kill the synchronization between Unity and Visual Studio somehow.
The next time Visual Studio will reload the project, it will prompt a warning.
Just click on "Discard".
If you have done all of the above and still isn't working , just try this:
Note: you should have updated VS.
Goto Unity > edit> preference >External tools> external script editor.
Somehow for me I had not selected "visual studio" for external script editor and it was not working. As soon as i selected this and doubled clicked on c# file from unity it started working.
I hope it helps you too.
Unload and reload the project, in Visual Studio:
right click your project in Solution Explorer
select Unload Project
select Reload Project
Fixed!
I found this solution to work the best (easiest), having run into the problem multiple times.
Source: https://alexdunn.org/2017/04/26/xamarin-tips-fixing-the-highlighting-drop-in-your-xamarin-android-projects/
This page helped me fix the issue.
Fix for Unity disconnected from Visual Studio
In the Unity Editor, select the Edit > Preferences menu.
Select the External Tools tab on the left.
For External Script Editor, Choose the Visual Studio version you have.
Click regenerate Files
You Done
Select project in Visual Studio
Click "Refresh" button
I hit the same issues today using Visual Studio 2017 15.4.5 with Unity 2017.
I was able to fix the issue by right clicking on the project in Visual Studio and changing the target framework from 3.5 to 4.5.
Hope this helps anyone else in a similar scenario.
Two Alternative Options:
Fix 1
#singleton pointed me in this direction. Instead of changing the target in Visual Studio you should change it in Unity since the project is auto-generated.
First delete the auto generated Visual Studio files:
.csproj
.user
.sln
Then from within Unity go to PlayerSettings and under 'Other Settings' change the 'Scripting Runtime Version' from Stable 3.5 to Experimental 4.6.
However, that didn't fix it for me.
Fix 2
I noticed all of the references to Unity related code was marked with a yellow warning. Check your error logs and see if this is the case. In particular see if you get the following error: getreferenceNearestTargetframeworkTask
If so try:
Start Visual Studio Installer again.
On the Build Tools 2017, click Modify,
Ensure that "Nuget targets and build tasks" are ticked. This should become ticked if you click on Universal Windows Platform development.
Update 2020 with Visual Studio Community 2019 and Unity 2019.3:
Open Visual Studio Installer as Administrator, select to modify your current installation and add "Game development for Unity"
If you add a new c# script in Unity now, and open it (automatically) with Visual Studio, it is not described as "Miscellaneous" at the top of the window but with "Assembly-CSharp", and the autocomplete works.
i found my solution by creating the .cs file from visual studio itself instead of unity editor
right click on project folder in solution explorer
add > new item
type "unity" on the search field on the top right
select "CSharp MonoBehaviour"
name your script on the bottom and click Add
In my case, correct .net version was not installed on my PC. I install the .net 3.5 on my pc and that worked for me.
For Windows or macOS:
Download/Install the Visual Studio IDE (with Unity Tools)
When installing, make sure you include installation of
Game development with Unity
Then using Unity (you can double click one of your C# files), open a new C# project and the Visual Studio IDE should open with your new project structure.
From there, you should be able to see what you are looking for.
For example:
For Linux (suggestion):
Try Monodevelop - Additional Information, it provides code completion/hints.
My autocomplete also didn't work because Visual Studio Tools for Unity wasn't installed. So, after you install that, delete the auto generated Visual Studio files. Others said that you open file again and the problem is solved but it's not.
The trick is: instead of normally double-clicking the file, you need to open the C# file from Unity by right click and then "Open C# Project".
The issue I faced was that the C# Project was targeting a different .NET Framework (4.7.2), whereas the Unity project had a different target (.NET 3.5).
I fixed this by changing the target in Unity as-
File -> Build Settings -> Player Settings -> Other Settings -> API
Compatibility Level : Set it to the .NET version you already have
installed (Check your .NET Version here). In my case, it was 4.x
After this, Visual Studio worked perfectly and autocorrect was fixed too.
Try pressing Ctrl + Alt + Space (which toggles between suggestion and standard completion modes)
For some odd reason, the "Game development with Unity" tool can become disabled in Visual Studio.
To fix this..
Open Visual Studio
Go to Extensions → "Manage Extensions" → Installed
Find "Visual Studio 2019 Tools for Unity"
If it is disabled, enable it
Restart VS
Credit to Yuli Levtov's answer on another Thread
The following works for me.
Go to Edit->Preferences->External Tools->External Script Editor Select Scripting Editor
I solved to install the same version of .NET on WIN that was configured in my Unity project. (Player Settings)
Go to Options on the Tools menu and then select Documents in the Environment node. (If Documents does not appear in the list, select Show all settings in the Options dialog box.)
Put a tick on "Miscellaneous files in Solution Explorer" and Click OK. (This option displays the "Miscellaneous Files" node in Solution Explorer. Miscellaneous files are files that are not associated with a project or solution but can appear in Solution Explorer for your convenience if you tick this option.)
Locate your file in the Solution Explorer under "Miscellaneous Files". Then drag and drop your file to where it should belong and voila! This will copy the file to where you drop it. You may now safely delete the older file under Miscellaneous Files folder if you wish to do so
Credits: https://stackoverflow.com/a/47662523/10471480
In case Scripts folder is not visible:
Click on "Show all files" in Solution Explorer
Locate the Scripts folder.
Right Click on Scripts and select "Include in Project"
Keep in mind that if you are using the ReSharper tool, it will override the IntelliSense and show it's own. To change that, on VS, go to Extensions -> ReSharper -> Options -> IntelliSense -> General then choose Visual Studio and not ReSharper.
Before restarting and/or re-installing VS, First try opening any other of your projects to see if Intellisence works, if it does, then issue probably lies with your current project. First, most probable victim would be the NUGET packages with pending updates. To Fix this,
Right click on references
Proceed to Manage NUGET Packages Under NUGET Packages
proceed to updates Install Updates and recheck Intellisence
I tried all of these but ended up finding out that I needed to right-click the solution in Solution Explorer and add existing items and find the C# assembly file in Window's Explorer. There seem to be a bazillion different problems that give you this error, this is likely the most simple solution. If you double click on your script from unity, it does not seem to drag the assembly along.
Another possible fix:
In the project window, click on the Assets folder
Right click, and Create -> C# Script
Double click that, and wait.
For some reason, this work.
None of the above solutions worked for me. However I opened the ProjectName.CSPROJ file and manually added the new file and it worked like charm
What worked me is that I copied all the code inside the broken class and removed that file.
Then, I opened an empty file with the same name and pasted back.
Result: beautiful syntax highlights came back!
"Preferences" -> "External tools" -> set you exteranl tool
Thats one fix. Also for VS you can use ReSharper by JetBrains, but I recommend use Rider. That one is also free for students.
It provides less performance than visual studio, but more than VS+Resharper definitely.
Have a good day, mate)
Try with combination: Ctrl + Alt + Space
one of the above methods are worked for me and I just found a solution to this problem,
1. First, go to the project directory and delete .sln file
2. Second, go to unity and double click your script. Then Visual Studio will be open with an error,
Then click ok and close Visual Studio editor.
Finally, turn off your Windows Defender and then go to your project directory and there will be .csproj file. Just double click and open this from your Visual Studio editor and open the scripts folder inside the assets folder and open the scripts and autocompletion will be working perfectly fine.
These actions solved the problem for my projects in Visual Studio 2022
FIX 1
Solution
Assembly-CSharp (right-click)
Load Entire Dependency Tree
FIX 2
Solution
Assembly-CSharp
References
Double click on any lib to force loading
Design View for Xaml on Visual Studio Professional RC 2012 used to work for me. But suddenly stopped for no reason I can figure.
Visual Studio 11 No longer Recognizes Xaml Files.
In properties, it treats XAML files like XML.
In solution Explorer it recognizes it as a xaml file
Right Click -> Design View opens a new Xaml code page
Controls Toolbox shows nothing
My OS is Windows 7 x64.
I have applied all updates up to July 2012 to VS11
I have tried Repairing Visual Studio & Resetting Settings but to no avail.
There is nothing in search or stackoverflow I could find to remedy this.
I have not tried un/reinstalling
Visual Studio 2012 RC designer does not recognize xaml for a Windows Metro app looks identical to my case but my problem suggests the issue is more general than his title.
Reinstalling fixed his issue but does not shed light on this frustrating problem.
Can someone help?
EDIT - Reinstalling nearly resolved the issue. Design view works, toolbox is populated, auto complete is back, XAML is available under tool-> options->text... and control element properties can be viewed.
Everything is normal except for the passing strange fact that XAML Code View no longer does syntax highlighting. This is not suprising since unlike what http://msdn.microsoft.com/en-us/library/bb907395(v=vs.90).aspx expects, there are no XAML prefixed items in the displayed items.
Perhaps relatively minor in the scheme of things but also a very annoying loss.
Suggestion 4 in this link worked for me:
devenv /resetuserdata in Command Prompt.
So at least in my case, re-installing and then the above command cleared all issues. It is possible that resetting user data could have made it unnecessary to re-install but I can't know that now.
I still can't say what caused this but it seems a pretty long tail issue that occurs sporadically and looks to have precursors in older versions.
Check the following:
Tools -> Options
Expand Text Editor -> XAML -> Miscellaneous
Make sure that "Always open documents in full XAML view" is not checked
Or perhaps the default program for opening .xaml files has changed:
Right-click your .xaml file in Solution Explorer
Click Open With...
Select XAML UI Designer
Click Set as Default button
Click OK
EDIT
This does appear to be a known bug with an earlier version of VS11.
If anybody is interested. I had the failure: Could not open XAML and config files in Visual Studio 2012. Now I detected the cause: the Solutions suo files were corrupted after a System Crash. So I (was not sure) rebuilt the sln file in a different Folder and copied the sln and suo files (they are hidden!) to the old Folder. That definitely brought me back the lost functionality. Maybe it is only necessary to delete the old suo files.
Juergen
I had the same issue in Vs 2012 express edition. Solved by running vs2012 command prompt and executing the code
WDExpress/ResetSettings
In Visual Studio 2013 I had a similar issue - I change my build action & from BundleResource to AndroidResource and I was able to get it working.
I downloaded my working last repo from github, and then I opened it to check it worked, which it did. I replaced the xaml, and cs files and it still didn't work. So I just copied all the files in the root,
App.config
App.xaml
App.xaml.cs
MainWindow.Xaml
MainWindow.xaml.cs
packages.config
.csproj
.sln
Everything loaded again, thank goodness.
I want to clear the list of projects on the start page...how do I do this? I know I can track it down in the registry, but is there an approved route to go?
There is an MSDN article here which suggests that you just move the projects to a new directory.
However, as you mentioned, the list of projects is kept in the registry under this key:
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\<version>\ProjectMRUList
and the list of recent files is kept in this key:
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\<version>\FILEMRUList
Note For Visual Studio 2015:
The location has changed. You can check out this answer for details.
Some people have automated clearing this registry key with their own tools:
Visual Studio Most Recent Files Utility
Add-in for cleaning Visual Studio 2008 MRU Projects list
PowerCommands for Visual Studio 2008
Features
Clear Recent File List
Clear Recent Project List
Clear All Panes
Copy Path
Email CodeSnippet
Insert Guid Attribute
Show All Files
Undo Close
Collapse Projects
Copy Class
Paste Class
Copy References
Paste References
Copy As Project Reference
Edit Project File
Open Containing Folder
Open Command Prompt
Unload Projects
Reload Projects
Remove and Sort Usings
Extract Constant
Transform Templates
Close All
If you try opening up a project that can no longer be found, Visual Studio will prompt you for permission to remove it from the MRU list. So if you temporarily rename an appropriate top level folder to fake the projects' disappearance, you can get rid of the projects one by one.
In Visual Studio 2015 all the history lists (including search history, file MRU and project MRU) are now located at:
HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\14.0\MRUItems
You will see a different GUID folder for each list, and a sub-folder called Items in each of them. Find the Items folder that contains the relevant list, and just delete its parent GUID folder.
Visual Studio will re-create the GUID folder together with a new Items child folder, next time it wants to add something to the list again.
I found the MRU editor from Code Project a great tool for that. No problems with it, and it works on 2003, 2005, and 2008.
Note: This answer is specific to Visual Studio 2010.
If you don't want to manually edit the registry, you can use PowerCommands for Visual Studio 2010.
PowerCommands 10.0 is a set of useful extensions for the Visual Studio
2010 adding additional functionality to various areas of the IDE.
The specific command for clearing the registry from the extension is:
Clear Recent Project List This command clears the Visual Studio recent project list. The Clear Recent Project List command brings up a
Clear File dialog which allows any or all recent projects to be
selected.
The PowerCommands can be installed with the Visual Studio extension manager: Tools > Extension Manager > Online Gallery: search for PowerCommands for Visual Studio 2010.
Try Recently Used Files: a free addin for Visual Studio that manages MRU files on a per-project basis:
Supported for VS 2010, 2012, 2013.
For Visual Studio 2012, 2013:
http://visualstudiogallery.msdn.microsoft.com/a61cbd1d-b5a2-490b-a6bb-f0ea3ecf214a
For Visual Studio 2010:
http://visualstudiogallery.msdn.microsoft.com/45283881-5a62-4dc1-8ffb-4cbc02709947
For Visual Studio 2013:
Open the Run dialog (Press Win + R)
type: regedit
navigate to: HKEY_CURRENT_USER > Software > Microsoft > VisualStudio
click 12.0 then the files will show up on the right side.
Look for the "LastLoadedSolution", right click then click Modify
change the value to 0.
This worked for me.
I'm not sure if this solution has been posted somewhere here, but if you have VS 2013 Update 5 you can open start page, and right click project below "Recent" list, and choose "Remove from list". I don't know how about other VS versions, maybe this feature is available.
I had this issue as applied to VS 2017 where you do not have any MRU items in the registry as in the previous versions. The solution was, on the other hand, simple: go to "Tools->Extensions and Updates" and install "Power Commands for Visual Studio". After they have been installed, your File menu will look as shown below.
Just click the menu item to clear the project MRU.