Metadata file not found - Data.Entity.Model

问题:

Anyone having similar problem, while creating webservices?

Compiling transformation: Metadata file 'D:\Program Files\VS2013\Common7\Tools..\IDE\Microsoft.Data.Entity.Design.dll' could not be found D:\PROJEKTY\apki\ws2\WS\WS\DataModel.tt

I tried adding data model again, restarting VS, cleaning and building solution, creating new project, deleting and adding reference, installing the newest version. I think that any solution found on internet does not work for me.

Any suggestions? I think of pasting file into this directory, but can't think what may be there.

回答1:

Based on

C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\Extensions\Microsoft\Entity Framework Tools\Templates\Includes\EF6.Utility.CS.ttinclude

, the code generator is looking for the missing DLLs in the following locations:

<#@ assembly name="%VS120COMNTOOLS%..\IDE\EntityFramework.dll" #>
<#@ assembly name="%VS120COMNTOOLS%..\IDE\Microsoft.Data.Entity.Design.dll" #>

I discovered that the environment variable %VS120COMNTOOLS% is not compatible with the correct installation path of visual studio, so I changed it from Advanced system properties and it worked

回答2:

1. Check your install location. I installed VS to the other location D:\ than default C:\ so I got the error.
2. modify "Environment Variables" to your location, for me it means changing C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\Tools\ to D:\Microsoft Visual Studio 12.0\Common7\Tools\.
3. DON'T Forget to add a \ to the end of word.

回答3:

I believe VS is not updating the VS120COMNTOOLS variable correctly when reinstalling VS to a different drive. See this SO thread for an extended answer.

回答4:

The problem lies in the fact that the file originally EF6.Utility.CS.ttinclude wrong. Even if the variable %VS120COMNTOOLS% is the correct value, the error still occurs.

Blame the two stupid points in the following lines (%VS120COMNTOOLS%..\IDE):

<#@ assembly name="%VS120COMNTOOLS%..\IDE\EntityFramework.dll" #>
<#@ assembly name="%VS120COMNTOOLS%..\IDE\Microsoft.Data.Entity.Design.dll" #>

If that's the way to fix the error no longer occurs:

<#@ assembly name="%VS120COMNTOOLS%\IDE\EntityFramework.dll" #>
<#@ assembly name="%VS120COMNTOOLS%\IDE\Microsoft.Data.Entity.Design.dll" #>

And the variable %VS120COMNTOOLS% must have the correct value, of course.

The question is old, but the answer is still relevant now, because this error persists, and in the VS2015. Below lines from the ill-fated file:

<#@ assembly name="%VS140COMNTOOLS%..\IDE\EntityFramework.dll" #>
<#@ assembly name="%VS140COMNTOOLS%..\IDE\Microsoft.Data.Entity.Design.dll" #>

Sorry.

回答5:

Not sure why this is happening. One of my colleague faced this issue when he is trying to generate database from Model in a common server that we are using. I tried in the same machine with my login from my PC and it worked for first time and i tried again and i got the same error. I just did a

devenv /resetsetting

in VS 2013 command prompt and it worked. Did the same in my colleagues machine and it worked too. Not sure it will workbut wort a try

回答6:

This worked for me.

1. Go to C:\Program Files (x86)\Microsoft Visual Studio 12.0\Common7\IDE\Extensions\Microsoft\Entity Framework Tools\Templates\Includes\EF6.Utility.CS.ttinclude

2. Edit it with Visual Studio.

3. Remove the two dots after the URL, so the new lines like:

   <#@ assembly name="%VS120COMNTOOLS%\IDE\EntityFramework.dll" #>
   <#@ assembly name="%VS120COMNTOOLS%\IDE\Microsoft.Data.Entity.Design.dll" #>
   

4. Fix your environment variables to end with directory just befor IDE. In my case

   C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\
   

5. Rebuild the project or delete the entity framework and recreate it.

回答7:

Try this:

1. Double Click on the .edmx Model
2. Right click anywhere on the "Entity Data Model Designer"
3. Click "Update Model from Database"
4. Click Finish