RDLC Reporting in ASP.NET Core using ReportViewerCore.NETCore

RDLC Reporting in ASP.NET Core using ReportViewerCore.NETCore

Traditionally, RDLC reports were tightly coupled with the Microsoft ReportViewer control in the .NET Framework. But in ASP.NET Core, there is no official ReportViewer control from Microsoft. Developers often wonder if they can still use RDLC reports in Core applications. The good news is – yes, you can!

Step-by-Step Process

  1. Install the ReportViewerCore.NETCore NuGet package: 
    <PackageReference Include="ReportViewerCore.NETCore" Version="15.1.26" />
  2. Create your RDLC report file. Since Visual Studio doesn’t provide the “Report” item template for ASP.NET Core projects, the trick is:
    • Create the RDLC file in a .NET Framework project (e.g., console app).
    • Design the report using the Microsoft RDLC Report Designer extension for Visual Studio.
    • Copy the RDLC file into your ASP.NET Core project under a Reports folder.
  3. Register your RDLC file as an embedded resource in your .csproj: 
    <EmbeddedResource Include="Reports\EmployeeReport.rdlc" />
  4. Use LocalReport to load and render the report into PDF, then send it to the client: 
    
string rdlcFilePath = Path.Combine(Directory.GetCurrentDirectory(), "Reports", "EmployeeReport.rdlc");
LocalReport report = new LocalReport();
using (var fs = System.IO.File.OpenRead(rdlcFilePath))
{
    report.LoadReportDefinition(fs);
}
ReportDataSource rds = new ReportDataSource("DataSetEmployee", employees);
report.DataSources.Add(rds);

byte[] pdfBytes = report.Render("PDF");
return File(pdfBytes, "application/pdf", $"My-Report-{DateTime.Now}.pdf");

Working Example

In my demo, I created an EmployeeRepository with sample data and passed it as a dataset to the RDLC. Parameters can also be passed using: 

report.SetParameters(new ReportParameter("MyParamName", "Sudipto: " + DateTime.Now));

YouTube Tutorial

I have created a full step-by-step video tutorial that explains the complete setup in detail. You can watch it here: RDLC Reporting in ASP.NET Core (YouTube)

About Me

I am Sudipto, a Microsoft Certified Professional with over 20 years of experience in .NET technologies. I provide personalized 1-to-1 online training on C#, ASP.NET Core, MVC, Blazor, SQL Server, and more.

If you are looking to learn .NET from fundamentals to advanced or prepare for interviews, feel free to reach out:

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