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.
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.
I'm using Visual Studio 2015 & Syabse ASA DB (ver 16.0.0.2222) alongwith EntityFramework 6.1.3.
I add an ADO.NET Entity Data Model
-> I choose EF Designer from Database
-> Establish a New Connection
-> Select the option to Include information in Connection String
-> Click Next -> Ideally the next window should allow me to add Tables/Views/Procedures but Upon clicking Next the window closes.
You may check this link to understand my issue better (only difference is I'm on Visual Studio 2015 & the DB I'm using as Sybase ASA)- https://www.youtube.com/watch?v=4SwhYYAzx6I
Has anyone come across this kind of problem or know how to fix this?
Kindly advise.
I think you need the connector for avoid this.
You can try this:
Download the "Get a Free "Developer" Edition" here: http://scn.sap.com/community/developer-center/oltp-db
Choose Custom Install when installing.
Only install the .Net ADO package from the custom install.
Reference the Sybase.AdoNet4.AseClient.dll in your solution from where the install put the files on your drive.
After that you should be able to perform queries, updates etc. in your solution.
Read this if needed: http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.help.sdk_12.5.1.adonet/html/adonet/DAFJEFIF.htm
Hope this help.
I came across the solution & posting it so that it may help others.
What I already had done?
Install the latest developer edition from Sybase
Use command prompt with admin priviliges.
Naviagte to the path where SQL Anywhere (Sybase ASA) is installed containing the DLL's (in my case: C:/ProgramFiles/SQL Anywhere 16/Assemble/V4)
Execute SetupVsPackage.Exe -i -v 6
Update app.config file to match the latest provider.
Install EntityFramework 6.1.3 to the project where I would add EDMX file.
What I missed?
After step 4 above I had to run an additional command -
Execute SetupVsPackage.Exe -i -v EF6 (EF in caps)
I've been trying to create a data model off of an existing database table using Entity Framework in Visual Studio 2015 for an MVC application. I'm able to test the connection to the MS SQL database I've been using successfully and choose the database itself, but whenever I click 'finish' I get error shown below.
I've tried following the instructions here, but it has not worked and I can't find any other answer.
Make certain you have added the assembly Microsoft.SqlServer.Management.Sdk.Sfc to your project. You can search for this assembly and install it via NuGet, or run the following command in the Package Manager Console:
Install-Package Microsoft.SqlServer.Management.Sdk.Sfc.dll
I found the answer. Chase's answer was close, but mine was a different version. I'm using SQL server 2012 and, according to the error message, I needed version 12. I found it here.
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
I cannot find the Entity Data Model under the 'Data' tab when adding a new item.
I have looked at several questions and answers, information on this and none of the solutions have worked.
I have repaired, uninstalled and reinstalled, installed the EF Tools package manually and tried uninstalling all VS related programs. I have also tried creating several new projects, Class Libraries, Web Projects under different .NET frameworks and it isn't there.
Main project: Visual Studio 2012, Class Library Project .NET 4.0
I updated Visual Studio 2012 using this link:
http://www.microsoft.com/visualstudio/eng/downloads#d-visual-studio-2012-update. After this update, the "Entity Data Model" option was added to the data tab.
The new Entity Data Model in VS 2012 by default uses T4 templates (.tt) files instead of former custom tool for code generation. The generated context is also based newer DbContext API instead of ObjectContext API used by Visual Studio 2010 (that is the reason why it doesn't have the method - the equivalent method in DbContext API is Set<T>). Both T4 and DbContext API are currently recommended approach for using EF.
I don't have VS 2012 on my current machine but what you can try is to delete both .tt and turn on the old generation as described in .Desinger.cs.
Edit: You may try to Re-install VS2012 and/or repair it. That should fix this issue. In addition, look at the release version of your VS2012.
Another suggested solution to re-install and reason why this happens - Unable to add Entity data model to a Visual Studio project
The accepted answer from here solved the problem in my case:
http://www.datazx.cn/Fv7p5a/xw-US/oaax2pu/2q7xs6/d8x6rssc-b4mt-fsix-bc6c-ct8mf8d6fsbc23rsdfd.html
I finally figured it out. I ran EFTools.msi from a C:\ProgramData\Package Cache\ subfolder, which only allowed me to 'uninstall' or 'repair'. I tried repair, but I get the same problem, so I did 'uninstall', then ran it again and it allowed 'install'. After this install, I can now add Entity Data Models.
Also, the accepted answer in the "Missing Entity Framework Template in Visual Studio 2012 Express for Web" threat on forums.asp.net suggests that repairing Entity Framework Designer for Visual Studio 2012 enu via 'Start -> Control Panel -> Programs and Features' might work as well (I can post only two links with my current 1 point StackOverflow reputation, so I won't provide the exact source).
Another possible solution:
My Problem was: Visual Studio is installed on Drive D:\, whereas the Entity Framework Installer placed the Package in c:...\VisualStudio 10.0\Common7....\ItemTemplates folder. --> Copied the AdoNetEntityDataModelCSharp.zip to drive d: and ran devenv /installvstemplates. This fixxed it for me. Edit: Also had to copy Various DLLs from IDE folder, PrivateAssemblies and PublicAssemblies. then run devenv /ResetSkipPkgs
http://social.msdn.microsoft.com/Forums/en-US/c059069b-eae4-48b4-a06e-ffd5f186077b/adonet-data-entity-model-template-missing-in-vs-2010-ultimate?forum=adodotnetentityframework
I also installed VS in a non-default path (different disk partition), so it indeed may be one of the potential causes of the problem.
You can right-click the designer surface and choose the model browser; Here is the only way to activate the Model browser in solution explorer.
The Model browser is included in VS 2012 recommended settings during installation.