Help me please!
I have project on ASP.NET MVC, EF 4.5 and WCF services.
Problem is that data from database are not loading to View.
I traced host WCF project with debugger and saw logs in SvcTraceViewer and
I saw similar errors for entities(which are not loading), but I cant stand what they mean.:
Image with error description.
Check the connection string in the WCF project.
For reference:
The context cannot be used while the model is being created
EF CTP4 : "The context cannot be used while the model is being created."
Related
I have tried several guides I find online, and nothing seems to work. I am trying to follow this guide, Setting up a new Silverlight 4 Project with WCF RIA Services, but when I try and add a Domain Services class to the RIA x.Web project, I get an error about an index dialoguie out of range etc. Google reveals this is maybe because VS can't find a connection string, although I have added one in App.config.
Then, if I try and add the DS class directly into my Silverlight host, bypassing teh RIA project, I get the same error, until I add an App.Config. After that, I can proceed an iota further, and I get to choose my DbContext and select a few entity classes to include in the DS class. But then I get an unspecified error.
Maybe something code-first specific? I find a NuGet package for CodeFirst EF and RIA, RIAServices.EntityFramework, but it doesn't support EF 4.3. I am going to try and duplicate my model in a dirty old edmx model and see.
Has anyone had any success doing any of this in VS 2012?
You should be adding connection strings to the Web.Config not an App.config
Last year someone reported encountering this problem ("The Silverlight project you are about to debug uses web services. Calls to the web service will fail unless the silverlight project is hosted in and launched from the same web project that contains the web services.") and accepted the answer to "set the web project which hosts the Silverlight application to be your startup project."
I'm seeing the same message, but think the solution might have to be different. I am building in VS 2010 a Silverlight application to access the Google Weather API, with VB as the code-behind. The API will return a XML file with data for the specified city (ex., "http://www.google.com/ig/api?weather=london,england"). The Solution Explorer only shows my VB/Silverlight project ("GetWeather"), and the Project Properties dialog box shows the Startup Object as "GetWeather.App" -- the only choice. I'm trying to use a WebClient object to make the call and an XDocument object to parse the return. But I repeatedly get the above error message, with no other result. What am I doing wrong?
Thank you in advance!
I would add a simple Web project and configure it to host the Silverlight app. You'll need to host the app somewhere anyways, so why not create a stub ASP.NET application in your solution? The easiest way is to create a new Silverlight app solution selecting an ASP.NET web project as the host, and then copying your existing code to that solution. Then you should set the web project as the startup one. This should make debugging a lot easier.
Besides, do remember to configure the client access policy to enable cross-domain calls. Check out this article
I am trying to convert an existing silverlight application to use a MVC web application versus a regular asp.net web application.
I have taken a look at fiddler and it is not able to access the domain service methods as the service does not exist (this is because these files are autogenerated once they are called with ria services). But with MVC since it looks for the controller if files don't physically exist we are getting this error.
I have tried to ignore svc files by:
routes.IgnoreRoute("{allsvc}", new { allsvc = #"..svc(/.*)?" });
and also have tried;
http://xamlcoder.com/blog/2010/01/15/upgrading-to-wcf-ria-services-asp-net-mvc-2/
With no success. Has anyone been able to successfully do this, if so, how?
Thanks in advance.
Good day!
I'm developing a Silverlight Solution with a lot of projects that uses RIA Services. Each silverlight project have Silverlight + Own Ria Services project. I want to make only one RIA services project and all silverlight project consume it.
The problem is when I set the "WCF RIA Services Link" to the new RIA Services, the Silverlight project works ok, my ViewModel class works ok, but, when I'm running, the application give me the error:
"Load operation failed for query 'GetList'. The remote server returned an error: NotFound."
When I test on the browse http://localhost/Project-Web-Services-Patrimonio-ClassService.svc runs ok.
How can i do to make it ok?
[]'s
Tiago Schäffer
I think you will find you are missing the RIA services web library config settings in your web app.
Taken from my answer here. Key notes in bold.
Use the RIA services project option to create your service library. That creates 2 projects that are bound together (for code gen of the proxy objects). Both are effectively just libs (1 Silverlight and 1 .Net)
Link any RIA services client library to you Silverlight app. Then link the .web RIA project to your hosting web app (for the standard RIA use). You can also add the .web library to your Wcf service as a .Net lib (not consume it as a service).
If you did not create your main Silverlight project as a RIA services project you will need to move the settings across from the app.config file to your web.config file. If you already have the service support settings you only need to copy the db connection string across. The db connection string only should be needed for you Wcf project.
You should then be able to either use the server-side RIA calls (don't forget to add your own submitchanges calls as RIA does that behind the scenes once per batch of updates), or just use the data layer (EF etc) directly.
I've made a service for my silverlight 4 database (SQL) affairs (VS2010, C# ASP.NET web app), now I'm writing my SQL functions in this service, how can I use this functions? I've read some articles about deploying services but I think my case should not be much complicated, I have a big ASP.net web app with several web pages (I have a server running on winserver2008), it works great, also I have a SL app, what kind of files should I upload for using service? do I need an asmx? how can I create it? should I change anything in web.config?
what is the easiest way to use my service for communicating between SQL and SL? thanks
WCF RIA Services is the way to go. You do not want to bother with old-school ASMX web-services.
You will use an EF model and a DomainContext on the server to handle all database access via CRUD methods (Create, Read, Update & Delete).
On the client you will use the generated Domain Service client to access data.
Notes from my previous RIA post:
My suggestion is to always create RIA Service libraries instead of adding directly to a Silverlight application. Then you can link the Client-side library to any number of Silverlight applications, then link the .Web part of the RIA library to your website to provide the WCF service. Again the key is to migrate the config settings.
It will probably make a lot more sense if you create a new RIA services library project, add your EDM etc, then link the halves to a separate Silverlight app and your new ASP.net website.
Step-by-step:
Create RIA Services Library project by selecting Add New Project. Select Silverlight on the left. Select WCF RIA Services Class Library on the right. I will assume it is called the default name RIAServicesLibrary1 for this example. It will create a Silverlight client library called RIAServicesLibrary1 and a standard .Net library called RIAServicesLibrary1.Web for use by the Web server.
Add your EDMX to the RiaServices.web project. Select Add new item. Select Data on the left. Select ADO.Net Entity Data Model on the right. I will assume it is called the default Model1.edmx for this example. Connect it to your database tables etc.
Build your project so that the next step will find your data model.
Create a Domain Service referencing your EDMX models in your RiaServices.web project. Select Add new item. Select Web on the left. Select Domain Service Class on the right. I will assume it is called DomainService1.cs for this example. Choose your data items from the Add New Domain Service Class popup window by ticking the checkboxes. A set of RIA services objects and methods will be created for each item you select.
Add a reference to the client Ria services library project (RIAServicesLibrary1) to your Silverlight application.
Add a reference to the web RIA services library project (RIAServicesLibrary1.Web) to your hosting web application (e.g. you ASP.Net website).
Copy/merge the various sections in the RIAServicesLibrary1.Web/app.config file into your <webapplication>/web.config file. This will include any connection strings and the module sections.
Build the project again so that the Data Source window will see your new Domain Context data sources.
Use the RIAServicesLibrary1 client object (called DomainService1 in this example) directly from your Silverlight code like this:
DomainService1 client = new DomainService1();
or use the Data Sources window to drag/drop a new grid etc onto a page.
If the Data Sources window is not visible select the "Data" menu then the "Show Data Sources" option.
For more information try this Microsoft link: Using WCF RIA Services