Xamarin, Visual Studio 2015 - AXML Designer loading forever - xamarin

I try to edit an axml file in Visual Studio, because drag and drop doesn't work in Xamarin Studio. But when I open my axml file, it's loading forever.
I've been waiting for more than 10 minutes, but it is still loading. When I restart VS I can open the axml file without any problems.
The same applies for all my other axml files (in other projects).
Does anyone knows how to fix this?
I'm using the newest stable version(cycle 8) of Xamarin btw.
EDIT:
I'm using Visual Studio Community 2015 Version 14.0.25425.01 Update 3 and I've got all the latest updates installed.
More detailed explanation:
I open my project in Visual Studio
I open my foo_bar.axml file
I switch from the Designer tab to the Source tab
I remove the android:background="blablabla" attribute
I switch from the Source tab to the Designer tab
The Designer tab is loading forever
AND
I open my project in Visual Studio
I open my foo_bar.axml file
I make some changes
I close the foo_bar.axml file
I reopen the foo_bar.axml file
the foo_bar.axml file is loading forever
NOTE:
The problem doesn't happen when I change the android:text="blablabla" attribute at step 4 and when I change some other attributes it also doesn't happen, so it is specific to just some attributes.

According to a forumer at Xamarin Forums, it has something to do with Cycle 8's AXML Designer not being able to render using the newest API.
But even in Cycle 8 when I choose to compile under Android 6.0 instead of 7.0 in the project's properties, the designer is still wonky as it is. Switch between "Designer" and "Source" on one .axml file and the designer still loads until Harambe cometh.
Therefore, your best bet is to downgrade Xamarin Studio to Cycle 7, and you can finally get the AXML Designer as working as before.
Until Cycle 9 or an incremental update/hotfix of Cycle 8 comes about, this is the way to go for now.
You can download and install the previous cycle in the link below:
https://store.xamarin.com/account/my/subscription/downloads#cycle7
For your own interest, you can read more about the aforementioned forum thread below:
https://forums.xamarin.com/discussion/77992/axml-layout-designer-inside-visual-studio-keeps-loading-forever

This happened to me also. Then I realised I hadn't opened Visual Studio in Admin mode. After I did, everything was fine.

Open the visual studio as admin and it loads perfectly. All the best.

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Visual studio 2022 is not auto-completing certain methods

I have recently downloaded visual studio 2022 for use in Unity and it was working correctly for a while, but today it has stopped auto-completing certain method names such as OnMouseButtonDown() and OnTriggerEnter2D(). Other methods such as Start() and Update() do work, but a majority of Unity specific methods are no longer auto completed. I've tried restarting visual studio code, restarting my computer and uninstalling and reinstalling visual studio code, but the error still persists. Any help would be greatly appreciated. Thanks.
This problem can cause various of reasons, even some IDE bug (which Visual Studio 2022 has a large number) but there is pretty common solution for this one
Firstly you'll have to make sure, that your Game development with Unity workload is checked
So
Open Visual Studio Installer and click Modify button across your version of Visual Studio.
Click on a Workloads panel and make sure that Game development with Unity workload is checked as shown on the image
Click Modify button at the bottom right corner.
Then you need to ensure, that desired version of Visual Studio is set as a External Script Editor inside Unity engine
Open Unity
Edit -> Preferences -> External Tools
And make sure that External Script Editor set as a current version of like so
Click on Regenerate project files button and try to always open your scripts directly from Unity
Restart Unity after those steps

Unable to open axml with design view with Visual Studio 2015

I created a new android layout file using visual studio 2015 and am unable to view with the designer that is built in to visual studio.
After selecting 'design' tab, I just see a waiting icon in the center of the view and it never finishes. After a while, i have to close the design tab and open in xml editor. The form is valid as it runs fine in emulator.
ideas?
I was able to resolve after uninstalling all platforms using Android SDK Manager and re-installing each platform 1 by 1. If there is an issue with the installation nothing will be installed (note: watch the logs for errors and review after each platform is installed)
Initially, I did have to manually download SDK Manager and copy the tools folder to my existing installation. I am not sure why my Tools folder was empty but after performing this step I could again run SDK Manager.

vs C#2015 solution's backwards compatibility wont run on vs2010 even when nothing was done to it

so i was in the middle of making a program, when i decided to try upgrading to vs2015 just because i like the newer UI.
so i opened the .sln in vs2015 test run the program again, and re arrange the ui of my program, but i didnt add or remove anything, or even touched the code.
saved the file, and tried opening it again on my laptop that still on vs2010.
i can open the solution,i can access and edit the code, but i can't open the designer at all, or run the program that i made.
although i can also upgrade the one on my laptop to the newer one, im doing this project with a friend that is also still on vs2010, is there any way to make it compatible again?
Whenever you try to open the project in visual studio 2015 which was basically developed in visual studio 2010 will prompt the window for the make some changes in the .sln file also it shows all changes in the browser.
If you try to open that file which is changed by the VS2015 will not be able to open in VS 2010 but available to open in VS 2012 and on word

VS2013 Build "Does not support previewing"

Every time I try to build my solution in VS2013, nothing builds, no errors - But in the status bar it says: "This item does not support previewing"
I googled around a bit but have come up empty.
But if I right click on each project and select build it works fine.
Any ideas?
Perhaps this message is totally unrelated... Post hoc ergo propter hoc
Steps to reproduce on my machine:
Right Click any project in solution: select build
Status bar displays Build successful
Right click solution select build
Status bar displays : "This item does not support previewing"
Perhaps it isnt related, but it sure does appear to be.
I was able to fix this... Somehow nothing was selected to build in the solution configuration. I right clicked on the solution, went to properties and then selected COnfiguration Properties and clicked the Build box for all the projects...
I have no idea how they became unchecked, only thing I can think of is a co-worker was trolling me.....
I've had this problem (i.e. debug not starting, and no error message) with Visual Studio 2015 in the following two cases:
after loading a solution that had previously been built with Visual Studio 2010
and also after using the "save as" function in Visual Studio 2015 to update a solution that had been started with Visual Studio 2010 (using Save as updates the solution file and sets the active Visual Studio version to 14 - i.e. VS 2015).
In both cases, deleting the bin and obj directories under the startup project fixed the problem. It's also worth closing visual studio and making sure that there are no {yourprojectname}.vshost.exe processes still running - if there are then kill them before running visual studio again. On that note, if you have multiple versions of visual studio on your machine, you should also check that you don't have the same solution open in the other version of visual studio at the same time (I've done that one myself).
One of the comments here suggests disabling the "enable visual studio hosted process" option. Don't do that if you can at all avoid it: you'll lose lots of debugging functionality (particularly in the area of being able to edit code while your solution is running).
Hope that helps someone out there.
Solution for VS2015
"this item does not support previewing" vs2015 (Visual Studio 2015/2016)
Step 1. Go to Control Panel -> Programs and Features
Step 2. Uninstall all: Windows Software Development Kit - Windows 10.0.10586.15 (maybe you have diff ver)
Step 3. Download new latest Windows Software Development Kit
https://go.microsoft.com/fwlink/p/?LinkId=619296
Install & Create new project, Done!
Dclick on MainPage.xaml and you will see Loading designer...
1: Add below lines in App.conf
<specFlow>
<unitTestProvider name="MSTest"></unitTestProvider>
</specFlow>
2: add a reference to Microsoft.VisualStudio.QualityTestTools.UnitTestFramework.dll
right click on your project and select: Add Reference
3: add using Microsoft.VisualStudio.TestTools.UnitTesting; in Step Defination
4: goto feature file and run it. This is what solve my problem on vs2013
I faced same issue with .aspx file. I just right click on the .aspx file and select open with (HTML Editor). You can choose any form the list.
I have come across the same issue for me, I have opened a project in VS 2010 and then when I open the same in VS 2015 then his error has occurred.
Solution:
By Closing the VS2010 project solution fixed the issue.

Why would my Visual Studio 2008 close everytime I open a .xaml file?

Visual Studio 2008 has been very stable for months on my computer.
This morning when I double-click on any .xaml file to open it, or even click on the tab of an already opened .xaml file, Visual Studio says "initializing toolbar" in the status bar and then 20 seconds later fully closes the whole application without any error message.
Other files (e.g. .cs class files) I can open fine.
Has anyone experience this or know what I could check/change to be able to use Visual Studio to edit .xaml files again?
MORE INFO: I can also create a new project and create and edit .xaml files fine.
MORE INFO: I can edit .xaml files in other modules (projects) fine.
MORE INFO: Everytime it crashes, this event is registered:
.NET Runtime version 2.0.50727.3053 - Fatal Error in executable module (72555E00) (80131506).
(odd since I have .NET framework 3.5 installed)
MORE INFO: It is only in one module (project) that .xaml files cause Visual Studio to crash. Even creating a new UserControl in that module crashes Visual Studio.
I get this occasionally (with .xaml and .resx files) and find that if I delete the solutions .suo file things work fine again.
[The suo file just contains per user settings like recently opened files etc so it's nothing important and will just be recreated when you next open the solution.]
I've been getting the same issue whenever I try to access project settings for a C# project.
Found additional information about this:
Here: http://blog.fryhard.com/archive/2008/11/26/visual-studio-2008-closes-at-build-outlook-2007-add-in.aspx
And here: http://social.msdn.microsoft.com/Forums/en-US/vsto/thread/99e124d0-c5d7-49c0-b1dd-71328f9a6571/
Apparently it's a bug in the core CLR engine that causes the entire CLR to crash if certain types of assemblies are loaded in a certain order.
Most of the time it appears to be directly related to the Visual Studio add-in called PowerCommands - uninstalling PowerCommands will make the problem go away.
And (we hope) it's supposed to be fixed for .Net 4.
This sounds very similar to the issue I had when I first installed VS 2008. Unfortunately, after hours of research, I ended up reinstalling the IDE (with my fingers crossed). No problems since then, but it's obviously not the most enjoyable way to solve the problem.
What is likely happening here is that one of the controls referenced directly on indirectly in your designer is stack overflowing during the designer process. Because the designer is hosted in process a stack overflow by one of the components will take down the designer and VS.
Try attaching a debugger to VS, break on first chance StackOverflow Exceptions and open the designer.

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