The modes and classes are generated by Entity Framework 5 when I updated the mode from exist database . But I want to correct the name of the ObjectContext class. I know we can use the refactor tools of visual studio 2010, But I am not sure all the code files can be updated in this way. please help me .thanks.
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We have recently upgraded our Visual Studio from 2010 to 2013. With it came EF 6.0, which is incompatible with the code generated from EF 4.
I need to update a table in the model with the latest version from the DB schema. When doing that, both "Update" and "Add" after deletion of the table definition do the following:
Remove all custom code already written for all types in the model, even if they are in separate files than the model;
Generate the new EF 6.0 bindings;
(optionally) Generate the new repository.
Now, that's obviously not the same behavior as in EF 4, which only regenerated the repository and did not touch the custom code.
We are not using NuGet, but referencing the EF library inside the project.
I guess VS 2013 uses a different version of the code generator than VS 2010. How can we revert to the old behavior?
UPDATE:
I have tried using NuGet to download EF 4.3.1 and repeat the update model steps (also delete and then recreate), but I am still seeing the old behavior. I think there is a problem with the VS 2013 EF Code Generator.
For me, the following solution worked.
Double-click on your edmx file and open its properties window. Change Code Generation Strategy from T4 to Legacy Object Context. Build your solution. It may cause thousands of errors because you have redeclared functions and properties, so remove all files that weren't there before.
I just installed VS 2013 Ultimate Trial and I noticed there is no EDM option as shown in the following figure.
Why?
According to ADO.NET Blog, the tool should be available out of the box.
From Visual Studio 2013 onwards we will no longer include the extension that enables configuring an "EDM" data source in this way, e.g. if you add an .MDF file to a project you will no longer see the option to create an EF model, and the option of creating an "EDM" data source based on an existing EDMX model as well as the ability to drag and drop to create data-bound controls automatically in WPF application based on those "EDM" data sources are no longer included.
The recommended ways to create an EF model are either creating the classes,manually (Code First) or adding a new "ADO.NET Entity Data Model" using Add New Item.
The recommended way to do data binding against EF models in WPF applications is through use regular object data sources as explained in this walkthrough.
I have 2 instances of VisualStudio 2010 open and both projects are ASP.Net MVC and I'm using Razor view engine. In the first instance, views are recognizing #model value and I get intellisense. The second instance does not recognize the model for the view and no intellisense. I know i have the right namespace for the model because I can run the app and get results. What setting am I missing? Thank you.
Most likely an issue with MVC version and the configuration of dll's to use.
Make sure you have defined all the correct versions of the MVC dll's in the config files.
I had this same issue in Visual Studio 2013, upgraded project from MVC 3 to MVC 4, made sure every config was referencing the correct dll's versions and the problem was gone.
I just fought through this with VS2013 today; the .csproj file had set all of the references to Private (=True) and confused itself that way. Eliminating all of the Private markers (and setting SpecificVersion = False) got Visual Studio thinking clearly again.
The references are once again showing up as Private = True, but the Razor syntax hasn't broken down again (yet).
I'm beginning my first explorations into Silverlight RIAs and EF4, but I can't get a project to run right off the templates that ship with VS2010 SP1.
Bear in mind here that what I've done is to install a brand new Windows 7 VM, and then I immediately installed LightSwitch Beta 2. Following that, I added VS2010 Premium, and applied Service Pack 1 to that.
The client portion of the Template app is kicking off three warnings and two errors; the details are posted below. It's looking for a WebContextBase class that it can't find, in code that it generated into Web.g.vb (and Web.g.cs) files. So far this project is entirely generated off the solution template; I haven't added a single line of code to what VS2010 generated.
I've since gotten EF4 to work fine in WinForms projects and Light Switch projects.
What's going on here, and how do I fix it?
------ Build started: Project: EF4Test, Configuration: Debug Any CPU
------ C:\Users\Rob\Documents\Visual Studio
2010\Projects\EF4Test\EF4Test\Generated_Code\EF4Test.Web.g.vb(21)
: warning BC40056: Namespace or type
specified in the Imports
'System.ServiceModel.DomainServices'
doesn't contain any public member or
cannot be found. Make sure the
namespace or the type is defined and
contains at least one public member.
Make sure the imported element name
doesn't use any aliases.
C:\Users\Rob\Documents\Visual Studio
2010\Projects\EF4Test\EF4Test\Generated_Code\EF4Test.Web.g.vb(22)
: warning BC40056: Namespace or type
specified in the Imports
'System.ServiceModel.DomainServices.Client'
doesn't contain any public member or
cannot be found. Make sure the
namespace or the type is defined and
contains at least one public member.
Make sure the imported element name
doesn't use any aliases.
C:\Users\Rob\Documents\Visual Studio
2010\Projects\EF4Test\EF4Test\Generated_Code\EF4Test.Web.g.vb(23)
: warning BC40056: Namespace or type
specified in the Imports
'System.ServiceModel.DomainServices.Client.ApplicationServices'
doesn't contain any public member or
cannot be found. Make sure the
namespace or the type is defined and
contains at least one public member.
Make sure the imported element name
doesn't use any aliases.
C:\Users\Rob\Documents\Visual Studio
2010\Projects\EF4Test\EF4Test\Generated_Code\EF4Test.Web.g.vb(34)
: error BC30002: Type 'WebContextBase'
is not defined.
C:\Users\Rob\Documents\Visual Studio
2010\Projects\EF4Test\EF4Test\Generated_Code\EF4Test.Web.g.vb(65)
: error BC30451: 'WebContextBase' is
not declared. It may be inaccessible
due to its protection level.
Have a look at LightSwitch Beta 2 Readme
There are few know issues with the LightSwitch. From the steps you have described to setup your system I would guess that the problem could be because
"2.1.1 Visual Studio 2010 users or
Visual Studio 2010 SP1 Beta1 users
must install Visual Studio 2010 SP1
before installing Visual Studio
LightSwitch Beta2"
You should try uninstalling LightSwitch Beta2 and then reinstall, and let us know if you get the same error.
Hope this helps.
Include this reference..
System.ServiceModel.DomainServices.Client.ApplicationServices
In VS2010, I cannot find the template ADO.NET Entity Data Model from the Data section.
I was doing:
create a silverlight(version 4th) project with a WebSite
right click the web project, Add -> New Item -> Data Section(actually, I tried every one)
But I cannot find it!! It's weird!
Then,
I tried to reset my VS template, it didn't work
Tried to re-install VS2010, and I got the "Successful" message. also I am sure that the ADO.NET Entity Framework has been installed appropriately.
So, is there anything else I can do? can I just install this template to VS?
i believe you can add a ADO.NET Entity Data Model in a windows class library
and reference that library where it is required. but you cannot add the data model in a silverlight library.
Update:
in that case, i presuming the website is atleast targeting version 3.5 of the framework
for vs2010, you can check that the required template is available at the locations below
'%programfiles%\Microsoft Visual Studio 10.0\Common7\IDE\ItemTemplates\CSharp\Data\1033\AdoNetEntityDataModelCSharp.zip'
'%programfiles%\Microsoft Visual Studio 10.0\Common7\IDE\ItemTemplates\VisualBasic\Data\1033\AdoNetEntityDataModelVB.zip'
'%programfiles%\Microsoft Visual Studio 10.0\Common7\IDE\ItemTemplates\Web\CSharp\1033\AdoNetEntityDataModelCSharp_ASPNET.zip'
'%programfiles%\Microsoft Visual Studio 10.0\Common7\IDE\ItemTemplates\Web\VisualBasic\1033\AdoNetEntityDataModelVB_ASPNET.zip'
(in a x64 environment use 'Program Files (x86)' for %programfiles%)
hope that helps.
-ryan