How to Connect Crystal Report with EF CodeFirst dbContext into Mvc.Net

I want Crystal Report connected to my App but the problem i face arises when i use EF Code First Approach with Repository Pattern. I dont understand how can I connect my Crystal Report Connection with My DBContext, in Crystal Report Connection Viewer i am unable to see my DbContext. Most of the help that i saw points me to create dataSets i.e .XSD file but all of DataSets are already available with DbContext. Is this possible or not , if it is then can any 1 guide me over this following is my Error

    Invalid index. (Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX))
string reportPath = Path.Combine(reportFolder, rpt);
             ReportDocument.Load(reportPath);
             ReportDocument.Database.Tables[0].SetDataSource(companies); //Line 29 this where i am getting error
Line 30: //            ReportDocument.SetDataSource(companies);
             await Task.Delay(10);

Now the error is obvious i dont have connection created, as i am using DBcontext and i assume this is where it will get all connection related detail from.As per my understanding My DbContext should be available for whole application. If i dont go for Dbcontext i have to recreate the connection which kinda negates the whole Layering concept.

This is how i am using crystal reports with my repos,

namespace RPS.Reporting
{
    public sealed class ReportGenerator
    {
        private ReportDocument ReportDocument { get; set; }
        public ReportGenerator()
        {
            ReportDocument = new ReportDocument();
        }

        public async Task<Stream> GetCompaniesReport(IEnumerable<Company> companies)
        {
            string rpt = "VoucherSummary.rpt";
            //            string reportFolder = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
            string reportFolder = AppDomain.CurrentDomain.BaseDirectory.Replace("WebApp", "Reporting")+ "Accounting";
            string reportPath = Path.Combine(reportFolder, rpt);
            ReportDocument.Load(reportPath);
            ReportDocument.Database.Tables[0].SetDataSource(companies);
//            ReportDocument.SetDataSource(companies);
            await Task.Delay(10);
            Stream stream = ReportDocument.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);
            stream.Seek(0, SeekOrigin.Begin);
            return stream;
        }
    }
}

And this is my controller.

 public class HomeController : Controller
    {
        private readonly ICompanyService _companyService;

        public HomeController(CompanyService companyService)
        {
            _companyService = companyService;
        }

        .........
        public async Task<ActionResult> ExportCompanies()
        {
            Response.Buffer = false;
            Response.ClearContent();
            Response.ClearHeaders();
            ReportGenerator reportGenerator = new ReportGenerator();
//            string rptPath = Path.Combine(System.Web.HttpContext.Current.Server.MapPath("~"));
            Stream stream = await reportGenerator.GetCompaniesReport(_companyService.GetCompanies());
            return File(stream, "application/pdf", "Companies.pdf");
        }

    }