How can I use a reportviewer control in an asp.net mvc 3 razor view?

ReportViewer is a server control and thus can not be used within a razor view. However you can add a ASPX view page, view user control or traditional web form that containing a ReportViewer into the application.

You will need to ensure that you have added the relevant handler into your web.config.

If you use a ASPX view page or view user control you will need to set AsyncRendering to false to get the report to display properly.

Update:

Added more sample code. Note there are no meaningful changes required in Global.asax.

Web.Config

Mine ended up as follows:

<?xml version="1.0"?>
<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=152368
  -->

<configuration>
  <appSettings>
    <add key="webpages:Version" value="1.0.0.0"/>
    <add key="ClientValidationEnabled" value="true"/>
    <add key="UnobtrusiveJavaScriptEnabled" value="true"/>
  </appSettings>

  <system.web>
    <compilation debug="true" targetFramework="4.0">
      <assemblies>
        <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Helpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="Microsoft.ReportViewer.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
      </assemblies>
    </compilation>

    <authentication mode="Forms">
      <forms loginUrl="~/Account/LogOn" timeout="2880" />
    </authentication>

    <pages>
      <namespaces>
        <add namespace="System.Web.Helpers" />
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Routing" />
        <add namespace="System.Web.WebPages"/>
      </namespaces>
    </pages>
  </system.web>

  <system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <modules runAllManagedModulesForAllRequests="true"/>
    <handlers>
      <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
    </handlers>
  </system.webServer>

  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="3.0.0.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

Controller

The controller actions are very simple.

As a bonus the File() action returns the output of "TestReport.rdlc" as a PDF file.

public class PDFController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    public FileResult File()
    {
        ReportViewer rv = new Microsoft.Reporting.WebForms.ReportViewer();
        rv.ProcessingMode = ProcessingMode.Local;
        rv.LocalReport.ReportPath = Server.MapPath("~/Reports/TestReport.rdlc");
        rv.LocalReport.Refresh();

        byte[] streamBytes = null;
        string mimeType = "";
        string encoding = "";
        string filenameExtension = "";
        string[] streamids = null;
        Warning[] warnings = null;

        streamBytes = rv.LocalReport.Render("PDF", null, out mimeType, out encoding, out filenameExtension, out streamids, out warnings);

        return File(streamBytes, mimeType, "TestReport.pdf");
    }

    public ActionResult ASPXView()
    {
        return View();
    }

    public ActionResult ASPXUserControl()
    {
        return View();
    }
}

ASPXView.apsx

The ASPXView is as follows.

<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<dynamic>" %>
<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
    Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>

<!DOCTYPE html>

<html>
<head runat="server">
    <title>ASPXView</title>
</head>
<body>
    <div>
        <script runat="server">
            private void Page_Load(object sender, System.EventArgs e)
            {
                ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Reports/TestReport.rdlc");
                ReportViewer1.LocalReport.Refresh();
            }
        </script>
        <form id="Form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">          
        </asp:ScriptManager>
        <rsweb:reportviewer id="ReportViewer1" runat="server" height="500" width="500" AsyncRendering="false"></rsweb:reportviewer>
        </form>        
    </div>
</body>
</html>

ViewUserControl1.ascx

The ASPX user control looks like:

<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %>
<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
    Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>
<script runat="server">
  private void Page_Load(object sender, System.EventArgs e)
  {
      ReportViewer1.LocalReport.ReportPath = Server.MapPath("~/Reports/TestReport.rdlc");
      ReportViewer1.LocalReport.Refresh();
  }
</script>
<form id="Form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<rsweb:ReportViewer ID="ReportViewer1" runat="server" AsyncRendering="false"></rsweb:ReportViewer>
</form>

ASPXUserControl.cshtml

Razor view. Requires ViewUserControl1.ascx.

@{
    ViewBag.Title = "ASPXUserControl";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>ASPXUserControl</h2>
@Html.Partial("ViewUserControl1")

References

http://blogs.msdn.com/b/sajoshi/archive/2010/06/16/asp-net-mvc-handling-ssrs-reports-with-reportviewer-part-i.aspx