I have tried several versions of Xamarin and monodevelop versions. I have the same problem on each version: My Toolbox is empty. When i click on "add components", i cannot add any control (i ve tried to select dlls like System.Web but it does not work)
What should i do ?
Mono project gave up its attempt to support ASP.NET WebForms (aka System.Web) with a visual designer like Visual Studio.
I think that's why you cannot add any controls to the tool box.
It would be good enough for ASP.NET MVC, Web API and SignalR though, as they don't need a visual designer.
Related
I have been asked to update my Visual Studio with asp.net core. But the update told me I already have this component. However when I look in the list for New Project I can find nothing which includes the word CORE.
How do I work this out?
I'm not talking about a single Visual Studio Project or File. I'm talking about the whole program. I have to update the program.
You need to download Tooling Preview 2 to get the asp.net core templates. That is a bug in the visual studio 2015. Please follow the following steps to resolve this issue
This is what your add new project dialog will look like once you have .net core installed correctly. Were you able to resolve this?
Is it a console app or a web app? If you have a .xproj file in your Visual Studio project, then you have ASP.NET Core web application. Probably the same for an ASP.NET Core console application.
I am following this setup tutorial
https://docs.asp.net/en/latest/tutorials/your-first-aspnet-application.html#create-a-new-asp-net-5-project
And have come across a problem. In the tutorial the instructions are as follows:
Start Visual Studio 2015. From the File menu, select New > Project.
Select the ASP.NET Web Application project template. It appears under
Installed > Templates > Visual C# > Web. Name the project ContosoBooks
and click OK.
This is fine, but in the next step :
In the New ASP.NET Project dialog, select Web Application under
ASP.NET 5 Preview Templates. Also, make sure the Host in the cloud
checkbox is not selected and click OK.
I am seeing no ASP.NET 5 Preview templates!
The only thing I am noticing is that my Authentication states No Authentication but I am signed in so I am not sure what this means or whether or not this is a factor.
The version I have installed of Visual Studio is "Community 2015".
I have already gone through the perquisites as outlined in This Article.
I am hoping that someone with a more thorough knowledge on the topic can help me out as I have not been able to find any threads etc. of the same issue or what could be causing the Templates to be missing.
Asp.net 5 templates no longer exist - they are renamed to Asp.net Core: ASP.NET 5 is dead - Introducing ASP.NET Core 1.0 and .NET Core 1.0
So, when creating your project, instead of picking "ASP.NET Web Application" as it is in the video - you would select "ASP.NET Core Web Application" and then on the next page those 3 templates (Empty, Web API, Web Application) are the same as the video's asp.net 5 preview templates
VS 2015 Preview is going under ASP.net Core web application. If you cant see that one under templates you may go to this site and download .NET Core 1.0 for Visual Studio then install.
I have concluded, by following another stackoverflow question on How to check the ASP.NET version loaded on a system as I noticed that the templates were categorized in the ASP.NET versions (4.6.1 & 5) in the tutorials but mine were not.
So I then checked and my files in C:\Windows\Microsoft.NET\Framework are as follows
Revealing no v5.0 directory. I rectified this and now all of the templates are available
AMENDMENT:
To fix it:
I went to http://www.asp.net/downloads and downloaded ASP.NET MVC 5
I ensured I had Developer Tools checked in the download process.
This issue was now resolved - As I then had the MVC 5 template files. Because I downloaded them, so I had them... and no longer didn't have them.
ALTERNATE FIX:
Furthermore From my research, some people had not included Developer Tools. To resolve: go to old mate 'Add or remove programs' and find your Microsoft Visual Studio 20xx install, 'change' and install Microsoft Web Developer Tools
I have had the same problem but it is actually even better because "The new dialog enables you to change the default authentication options for many of the templates. For example, when you create an ASP.NET Web Forms project you can select any of the following options:
No Authentication
Individual User Accounts (ASP.NET membership or social provider log in)
Organizational Accounts (Active Directory in an internet application)"
check out this >> http://www.asp.net/mvc/mvc5
I recently had this problem and finally fixed it by uninstalling (control panel -> uninstall a program) Microsoft.NET Core and Microsoft Visual C++ redistrutable 2015 (x64 & x86) and then re-installing the asp.net core rc2 (https://www.microsoft.com/net/core#windows or possibly check Tools->Extensions and Updates->Updates inside of Visual Studio).
I uninstalled the Visual C++ redistrutables because I kept getting an error when trying to re-install asp.net core rc2. It kept telling me that it already existed even after I had just uninstalled it and the update was showing in the "Extensions and Updates" section of Visual Studio after trying (but failing) to install the asp.net core rc2 update.
has anyone else dealt with this? My ultimate goal is to create a new empty web api project. I've been following tutorials and I've encountered the following issue:
My issue is that when I try to create a ASP.NET Web Application project in Visual Studio Pro 2012 I do not see that template as an option. I go to Installed --> Templates --> Visual C# --> Web
All I see is ASP.NET Empty Web Application. So I selected that and then expected the ASP.Net project window to pop up so that I could select "Web Api". However, that dialog never opened.
Does anyone know how/where I can get the ASP.NET Web Application template?
I came across your question as I had the same problem. When I first installed Visual Studio I didn't tick the box to install the Web Components. Here is how I solved the issue:
Close all your instances of Visual Studio.
Run the Visual Studio Installer (I found mine in the Downloads folder still and was named "vs_professional.exe").
For VS 2013 a grey window appears similar to when first installing VS.
When prompted select "Modify" from the list of options.
Tick the list item which I think was named "Web Development" or something similar.
Click update.
Once the installer has finished running launch Visual Studio.
When selecting New Project in Visual Studio I can now see the required templates.
Try to select Framework 4.5.
The Framework 4.0 don't have :)
Jorge Rocha
If you have ASP.NET MVC 4 Web Application as an option under Web when you select it as a new project the project window pops up and you will be able to select Web API.
kale909's solution worked for me. I just added pics here to make it more clear:
then here:
I have created a website using Visual Studio 2012. It is working just fine. The problem is I have to deploy it on a server that has .Net Framework 2.0 only. So I created another website using Visual Studio 2012 and set its version to 2.0. After copying the code of just a single page I tried to run it. But I am getting the errors "Unknown server tag asp:ScriptManager" and "Unknown server tag asp:UpdatePanel". I need them both as I have to use PageMethods in my page. How can I create a .Net Framework 2.0 website with ScriptManager and UpdatePanel without any error? Thanks in advance.
You didn't have to recreate your project. Go to the project settings, application, then change the "Target Framework".
To clearly answer your question, the answer is : you can't.
As Jamie Keeling suggested, Script Manager and Update Panel came with .Net Framework version 3.5.
You will have to find other components or some kind of workaround.
You might have to install ASP.NET 2.0 AJAX Extensions 1.0 if you are planning to use scriptmanager and update panel in .NET 2.0. Prior to .NET 3.5, Ajax was available as a separate library.
I have one ASP.NET web application projrct, created in Visual Studio 2008, .NET 3.5 Framework, IIS 6.1 and I'm using Ajax updatepanel, cache options for caching the datatable in a gridview. This project is working good in local, but when I deployed in a cert environment (.NET Framework 2.0 and IIS 6.0) I faced that caching issue.
So that, now I'm trying to change the project from 3.5 to 2.0 framework. But I'm facing an Ajax update panel error.
How can this problem be fixed?
You mean the target framework? You can right click the application name and then click on Property Pages, in that go to Build and then choose the target framework to 2.0.
Also, have a look at this:
http://msdn2.microsoft.com/en-us/library/bb398791(VS.90).aspx
reference : http://forums.asp.net/t/1194067.aspx
It will not be very straight forward though. As there may be some language features that are only available in 3.5.
The ASP.NEt AJAX framework for ASP.NET 2.0 has a separate DLL you have to install manually from this link: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=ca9d90fa-e8c9-42e3-aa19-08e2c027f5d6&displaylang=en
You'll have to use an older version of the AJAX control toolkit too; the latest is only supported on 3.5 and 4.0.
HTH.