Medium trust not working

[Mattias]

Hi,
I was testing the latest build (3.1.9.807) for the medium trust support with this code:

protected void Page_Init(object sender, EventArgs e)
        {
            Swh.Ih7.Reports.ShopInvoice report = new Swh.Ih7.Reports.ShopInvoice();
            report.OrderID = new Guid(Request.QueryString["OrderID"]);

            DisplayPDF(report);
        }

        void DisplayPDF(Telerik.Reporting.Report reportToExport)
        {
            ReportProcessor reportProcessor = new ReportProcessor();
            RenderingResult result = reportProcessor.RenderReport("PDF", reportToExport, null);

            string fileName = result.DocumentName + ".pdf";

            Response.Clear();
            Response.ContentType = result.MimeType;
            Response.Cache.SetCacheability(HttpCacheability.Private);
            Response.Expires = -1;
            Response.Buffer = false;

            Response.AddHeader("Content-Disposition",
                               string.Format("{0};FileName=\"{1}\"",
                                             "attachment",
                                             fileName));

            Response.OutputStream.Write(result.DocumentBytes, 0, result.DocumentBytes.Length);
            Response.End();
}

But I'm getting security exception:

Server Error in '/' Application.
--------------------------------------------------------------------------------

Security Exception
Description: The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error:


[No relevant source lines]


Source File: App_Web_zzaoc31d.4.cs    Line: 0

Stack Trace:


[SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
   Telerik.Reporting.Pdf.Rendering.PdfRenderer.DrawString(String text, PdfFont font, Brush brush, RectangleF rect, Boolean rightToLeft) +0
   Telerik.Reporting.Pdf.Drawing.PdfGraphics.DrawString(String s, Font font, Brush brush, RectangleF rect, StringFormat format) +124
   Telerik.Reporting.ImageRendering.CanvasPdf.DrawString(String s, Font font, Brush brush, RectangleF rect, StringFormat format) +107
   Telerik.Reporting.ImageRendering.TextLine.Render() +1436
   Telerik.Reporting.ImageRendering.RenderingElement.RenderToPage(RectangleRF clip, RoundedFloat parentLeft, RoundedFloat parentTop) +1864
   Telerik.Reporting.ImageRendering.RenderingElement.RenderChildren(RectangleRF clip) +161
   Telerik.Reporting.ImageRendering.RenderingElement.RenderToPage(RectangleRF clip, RoundedFloat parentLeft, RoundedFloat parentTop) +1970
   Telerik.Reporting.ImageRendering.RenderingElement.RenderChildren(RectangleRF clip) +161
   Telerik.Reporting.ImageRendering.RenderingElement.RenderToPage(RectangleRF clip, RoundedFloat parentLeft, RoundedFloat parentTop) +1970
   Telerik.Reporting.ImageRendering.CompositionBase.RenderPageSection(PageArea pageArea, RenderingElement pageSection, Single height) +339
   Telerik.Reporting.ImageRendering.CompositionBase.ApplyPageSections() +311
   Telerik.Reporting.ImageRendering.CompositionBase.SendPhysicalPages(Boolean force) +52
   Telerik.Reporting.ImageRendering.CompositionBase.End() +75
   Telerik.Reporting.ImageRendering.CompositionPdf.End() +39
   Telerik.Reporting.ImageRendering.CompositionBase.Dispose(Boolean disposing) +22
   Telerik.Reporting.ImageRendering.CompositionPdf.Dispose(Boolean disposing) +11
   Telerik.Reporting.ImageRendering.CompositionBase.System.IDisposable.Dispose() +17
   Telerik.Reporting.ImageRendering.ImageRendererBase.RenderReport(Report report, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback, EvaluateHeaderFooterExpressions evalHeaderFooterCallback) +242
   Telerik.Reporting.ImageRendering.ImageRendererBase.Telerik.Reporting.Processing.IRenderingExtension.Render(Report report, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback, EvaluateHeaderFooterExpressions evalHeaderFooterCallback) +21
   Telerik.Reporting.Processing.ReportProcessor.Render(IList`1 reports, ExtensionInfo extensionInfo, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback) +353
   Telerik.Reporting.Processing.ReportProcessor.RenderReport(String format, IReportDocument reportDocument, Hashtable deviceInfo, CreateStream createStreamCallback, String& documentName) +421
   Telerik.Reporting.Processing.ReportProcessor.RenderReport(String format, IReportDocument reportDocument, Hashtable deviceInfo) +108
   Swh.Reports.Web.UI._Default.DisplayPDF(Report reportToExport) +91
   Swh.Reports.Web.UI._Default.Page_Init(Object sender, EventArgs e) +184
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnInit(EventArgs e) +99
   System.Web.UI.Page.OnInit(EventArgs e) +12
   System.Web.UI.Control.InitRecursive(Control namingContainer) +333
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +6785
   System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +242
   System.Web.UI.Page.ProcessRequest() +80
   System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context) +21
   System.Web.UI.Page.ProcessRequest(HttpContext context) +49
   ASP.ih7shopinvoice_aspx.ProcessRequest(HttpContext context) in App_Web_zzaoc31d.4.cs:0
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75




--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.3082; ASP.NET Version:2.0.50727.3082

[Chavdar]

Hello Mattias,

Currently PDF rendering extension is not working in Medium Trust environment. For more information about what limitations exist when you use Telerik Reporting in medium trust, please refer to the following documentation article: Medium Trust.

All the best,
Chavdar
the Telerik team

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[Mattias]

Ohh, not good! :(
Will this be supported in future release?
Can you specify how to append web_mediumtrust.config in c:\windows\microsoft.net\framework\2.0.50727\config\ so pdf rendering will work?

/Mattias

[Chavdar]

Hi Mattias,

In web_mediumtrust.config find the SecurityPermission class and add the UnmanagedCode flag:

<NamedPermissionSets>
  ...
  <PermissionSet class="NamedPermissionSet" version="1" Name="ASP.Net">
    ...
    <IPermission class="SecurityPermission" version="1" Flags="Assertion, Execution, ControlThread, ControlPrincipal, RemotingConfiguration, UnmanagedCode"/>   
    ...
  </PermissionSet>
</NamedPermissionSets>

Hope this helps.

Best wishes,
Chavdar
the Telerik team

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Check out the tips for optimizing your support resource searches.