I have a project in visual studio ultimate 2010 (MVVM) and database, in SQLITE.
Everything worked fine, but now I have a problem with the ADO.NET Entity Data Model.
I searched for information about this and have not found much .. Every time I want to open the wizard, it just closes.
I think I should reinstall Visual Studio, but before doing so if anyone has had this error before and know what can be, I'd be grateful.
I've found this can be a bug with third party data adapters being left in strange states. Open your View > Server Explorer and remove your third-party data connections. Then, try opening the wizard again.
I had this problem with VS 2013 (Entity Model Wizard disappearing). I solved it by first uninstalling the MySQL .NET/Connector (I had 6.8.3) and installing it back, and then retrying the wizard. Wizard completes and I could select tables etc.
Try deleting the following file
c:\users\myusername\appdata\roaming\microsoft\visualstudio\10.0\SeverExplorer\DefaultView.SEView.
If you are creating a web application such as through MVC check the AttachDBFilename in web.config for characters such as |.
I had the same issue and was unable to resolve it by removing connections from Server Explorer.
I attached a visual studio debugger to visual studios.
Turned on CLI exceptions and turned off Just my Code.
I then saw the hidden exception.
The wizard was throwing an exception with the message "Invalid Character in Path" in System.IO.Path.CheckInvalidPathChars(string path, bool checkAdditional).
The value of path was "|DataDirectory|\\aspnet-Mvs4Dummy1-20140402113853.mdf".
I realised that this was the database that visual studios had automatically generated with my MVC application and that the offending character was probably the '|' symbol.
So I performed a Grep search of my directory and found that this was being stored in my web.config in this apparently unsupported format.
I changed the entry to a full local path and the wizard stopped disappearing.
Open VS,
View->Server Explorer and delete connections under the data connection files.
I had already this error before and solve it doing like this.
My solution for VS2015 was:
Install MySQL.NET Connector 6.9.8 to replace 6.9.5.
I already has installed MySQL for Visual Studio 1.2.6 and had got the appropratiate MySQL NuGet packages (MySQL.Data, MySQL.Data.Entity.EF6, MySQL.Web).
I solved the problem by doing some steps below:
1/ Open "Server Explorer" window in Visual Studio
2/ Delete all Connections under "Data Connections" sections
3/ Then, Add the ADO.net Entity Data Model as normal
Related
When I try to set SqlDataSource I've got provider error. Server connection checked and it works
Editor image：
Error message image：
Problem is similar to this thread but recommended fix doesn't work and IDK what to do
Error picture from thread above
I've installed MySQL connector, MySQL for Visual Studio, but it doesn't help to me
UPD: Here's a minimal project with an SQL DB (var_23.sql). In Web.config described a connecting to DB, the "Doctors" page has a SqlDataSource element, that do connection
From my experience, Please install "Data storage and processing" in visual studio installer.
If the corresponding package is missing during the compilation process, use Alt+enter to pop up a quick prompt to add it (you could also right-click Reference->Manage Nuget Packages to add the corresponding package)
Updated：
It turns out that I can run your program correctly, I downloaded a community version of mysql 8.0, and imported your database.
Because you create in Framework, I suggest you can remove providerName="MySql.Data.MySqlClient".
Please let me know if I misunderstood your question.
When I try to open an .sql file (even if i have just created it), I encounter the following error Could not load file or assembly 'Microsoft.Sql.Server.BatchParser.dll' or one of its dependencies.
Exactly like in this 6 years thread about VS2015: social.msdn.microsoft.com
Some info:
Visual Studio 2022
Windows 11
SQL Server Data Tools is installed.
Edit: Reproduced with another computer and on another solution, but still on VS2022
I had the same issue, resolved by uninstalling the SQL Server Data Tools.
I had the same problem. Fixed like this:
Right click => Open With => Select another editor => Set as default => OK
The other answers work, but I do like the functionality of SQL Server Data Tools.
Therefore, my workaround is to hit Ctrl+Tab twice, in quick succession (...assuming that I have more than one file open)
The act of changing context to another file, and then back again, causes the Sql Editor to sort itself out.
I'm trying to do a connection on C# with Oracle on Visual Studio 2015, and at first I had this error "could not load file or Assembly Oracle.DataAccess" then I did a lot of stuff to solve it until I found the
"32-bit Oracle Data Access Components (ODAC) with Oracle Developer Tools for Visual Studio" and the problem did not appeared anymore but when I tried to Open the connection it started to appear this problem "ORA-12154 TNS: could not resolve the connect identifier specified"
And I tried adding the ORACLE_HOME to the system environment variables as one forum suggested it, but it didn't worked and now I'm stuck and don't know what to do, I can connect to the database through sqldeveloper, so I think that the listener is fine.
Have you tried adding the Devart Package?
You can add a new reference to your Project by right clicking it in the Solution Explorer.
My second guess would be that maybe the .Net Version of your Project differs from your references.
Although this seems not the case, but maybe it will still help: looking up the ORA Error
I've been getting an error while trying to generate a MySQL database from my ADO.NET Entity Model. I've setup a connection properly and can connect to it through my Server Explorer. Also the settings in the model seem correct: T4 Code generation strate, Database schema name is correct and the DDL Generation Template is set to SSDLToMySQL.tt.
Also i cannot seem to map Entities to tables, the dropdown remains empty.
This is the error message:
I've yet to find a solution and hope someone could help me out :)
I'm new to EF and C#/VS etc.
Cheers,
I found a solution on the MySQL bug pages.
Here goes:
Additionally there's a workaround:
On the machine where VS 2013 is installed, VS plugin (1.1.3 GA) and
Connector/Net please do the following:
Note: close all VS instances before doing the steps.
On a Windows Explorer window go to this path or wherever the
Connector/Net binaries were installed to. By default this is the
location:
C:\Program Files (x86)\MySQL\MySQL Connector Net
6.8.3\Assemblies\v4.5\
Copy the file:
MySql.Data.Entity.EF6.dll
And paste it to this folder
C:\Program Files (x86)\Microsoft Visual Studio
12.0\Common7\IDE\PrivateAssemblies
If it asks to overwrite it please do so.
In order to copy the file administrator rights are necessary.
Then you can try again to generate the script for your model. It
should work fine.
It is important to have the 1.1.3 version of the VS plugin installed
since this workaround is for that. The download link is at:
http://dev.mysql.com/downloads/windows/installer/
Taken from the following page: http://bugs.mysql.com/bug.php?id=71427.
I've reinstalled my laptop - Windows 7, VS2010, VS2010 SP1, SQL2008 and SQL2008 SP2.
I've also done windows updates - no updates available from update window anymore
The issue I've is: When I double click on the EDMX file it gets directly in to the XML. Why is that?
I don't get any error....
I can't do update from Database or add entities from Database etc....
I googled and found you should do open with and choose XML and then close XML and double click again. I've tried several options (open with ) and I don't get the UI Designer for my Entity Framework (edmx ) file.
I clicked on the properties of the file (*.edmx)
and I see Cusotmtool: EntityModelCodeGenerator and build action : EntityDeploy
I then right clicked on EDMX and choose 'Run Custom Tool" and then I receive this error
"cannot find custom tool 'EntityModelCodeGenerator' on this system."
I checked VS2010 and VS2010 SP1 is installed. I did again install from DVD and choose REPAIR and I still have this problem....
so what could be problem?
thanks
you had unchecked some of recommended features while installing the Visual Studio. Just Reinstall the visual studio to configure the features. after installation open the .edmx file with the "ADO.Net Entity Framwork designer".
Try devenv.exe option /resetskippkgs, then solve the error.
The question is about VS2010, but if you're looking at the same problem on a newer Visual Studio (e.g. VS2013), you probably need to reapply the latest VS update (worked for me) or reinstall VS.