Here are a couple solutions. Number two is much better as it doesn't require needlessly duplicating your assemblies.

### Solution 1 (okay)

As added to the question itself and described in the post [Visual Studio 2010 Report Viewer - Object Datasource][1], just create a separate library for the project and add the rdlc file there. This appears to be a bug with the MVC Web Application project type itself so any other project type (like a Class Library) should work. The data source configuration wizard should now look like this:

![data source configuration wizard][3]

### Solution 2 (better)

As figured out in [Can't see or add Website Data Sources in RDLC report in ASP.NET MVC][2], you can just add an **.aspx** page anywhere to the MVC project in order to trick Visual Studio into pulling in the right design time libraries. 

Just do the following:

* Close all windows
* Clean & Rebuild Solution
* Add WebForm1.aspx to the Project
* Open up the RDLC file and choose a DataSource from the dropdown:

 ![DataSource Dropdown][4]


[1]: http://wraithnath.blogspot.com/2011/02/visual-studio-2010-report-viewer-object.html
[2]: https://stackoverflow.com/q/2923569/1366033
[3]: http://i.imgur.com/n44iRKu.png
[4]: http://i.imgur.com/qGkHTNu.png

I've created more projects using ReportViewer 2005 and 2008 in local processing mode than I can count on my hands. All Visual Studio 2005 or 2008 ASP.NET web forms projects. I always used some flavor of Object data source for the reports.

Tonight, I attempted to add the same functionality to a Visual Studio 2010 MVC 2 project and am failing miserably. First, the Add New Item > Reporting > Report is now a 2008 RDLC and not a 2005 RDLC report. Secondly, when trying to add a DataSet, my usual method of create a data proxy class with static methods that return `IEnumerables(Of Stuff)` will not show up as sources in the DataSources drop down

![Empty Data Source][1]

Thirdly, my *only* option is to add a Database connection. There is no "Object Data Source" to pick from:

![Database connections only][2]

I'm stumped. Like I kind of alluded to, I have no problems whatsoever actually rendering a report using the ReportViewer control. What I can't do is figure out how set up a Data Source in these new-fangled 2008 reports with Visual Studio 2010 so that I can pump a list of domain objects into the ReportViewer and display the report.

**UPDATE**

With some more research, I've found that MVC projects do not allow object data sources to be used within them. One solution for my issue is to create a separate project in the solution -- a web application, a service, or even just a class library, to add the report to and design it accordingly.

I'm still looking for alternatives here.

  [1]: https://i.stack.imgur.com/0fLnN.png
  [2]: https://i.stack.imgur.com/7cptm.png

Visual Studio 2010 Local SSRS Report (.rdlc) with Object Data Source

Here are a couple solutions, but I prefer the second one.

### Solution 1 (okay)

As this appears to be a bug with the MVC Web Application project type itself, you can add the report to a different project type (like Class Library). As described in the post [Visual Studio 2010 Report Viewer - Object Datasource][1], just create a separate library for the project and add the rdlc file there. The data source configuration wizard should now look like this:

![data source configuration wizard][3]

### Solution 2 (better)

As figured out in [Can't see or add Website Data Sources in RDLC report in ASP.NET MVC][2], you can just add an **aspx** page anywhere to the MVC project to trick Visual Studio into pulling in the right design time libraries. 

Just do the following:

* Close all windows
* Clean & Rebuild Solution
* Add WebForm1.aspx to the Project
* Open up the RDLC file and choose a DataSource from the dropdown:

 ![DataSource Dropdown][4]


[1]: http://wraithnath.blogspot.com/2011/02/visual-studio-2010-report-viewer-object.html
[2]: https://stackoverflow.com/q/2923569/1366033
[3]: http://i.imgur.com/n44iRKu.png
[4]: http://i.imgur.com/qGkHTNu.png

I have a MVC4 application in Visual Studio 2010 which contains plenty of classes. I'm trying to use them to pass in as the DataSource for a Report Definition Language Client ([RDLC][1]) file. But I can't access the classes from my assembly anywhere in the data source designer

According to the MSDN Walkthrough on [Using a Business Object Data Source with the ReportViewer Web Server Control in Local Processing Mode][2], I should be able to do so in the Dataset Properties page

> In the **Dataset Properties** page, in the **Data source** box, select **global**.

According to this Stackoverflow question on [How to use an Object data source in report (.rdlc)][3], when in Dataset Properties page, I should be able to create a new data source like this:

>**Creating a New Data source**: 

>* Select **Object** and click Next.
* Browse the solution tree and select the class(es) you want to bind to.
* Click Finish.

**But neither of these present as options...**

When I create a new dataset, nothing shows up under Data Source:

![DataSet Properties][4]

When I click New to create a New DataSource, I just get a connection Wizard that forces me to connect to a database:

![Data Source Configuration Wizard][5]

**Where can I add classes from my assembly?**

As a trivial example, here's an example of an object I have built into the assembly that I would expect to show up:



 Public Class Employee
 Public Property Name As String
 Public Property ID As Integer
 End Class

I would eventually like to populate this information programmatically like this:



 Dim lr As New LocalReport
 lr.ReportPath = Server.MapPath("~\Reports\Report1.rdlc")
 lr.DataSources.Add(New ReportDataSource("Data", New Employee("Kyle",27)))


[1]: http://msdn.microsoft.com/en-us/library/ms252067.aspx
[2]: http://msdn.microsoft.com/en-us/library/ms251692(v=vs.100).aspx
[3]: https://stackoverflow.com/q/3717517/1366033
[4]: http://i.imgur.com/wJgW17y.png
[5]: http://i.imgur.com/AP58Hmx.png