Out of memory errors in StiWebViewerFx

[Lynn]

We are using the following code (in OnPreRender) to display a .mdc file in the viewer:

Code: Select all

       Stream reportFile = null;
                if (Request.QueryString["FileID"] != null)
                    reportFile = ePrismFileManagerServiceHelper.GetFileStream(Convert.ToInt64(Request.QueryString["FileID"].ToString()));
                else if (Request.QueryString["FileName"] != null)
                    reportFile = ePrismFileManagerServiceHelper.GetFileStream(Request.QueryString["FileName"]);

                if (reportFile != null)
                {
                    byte[] tempBuffer = new byte[reportFile.Length - reportFile.Position];
                    reportFile.Read(tempBuffer, (int)reportFile.Position, (int)(reportFile.Length - reportFile.Position));
                    MemoryStream stream = new MemoryStream(tempBuffer);

                    StiReport reportOutput = new StiReport();
                    reportOutput.LoadDocument(stream);

                    StiWebViewerFxOptions.Connection.RelativeUrls = true;

                    StiWebViewer1.Report = reportOutput;

                    StiWebViewer1.CacheMode = StiWebViewerFx.StiCacheMode.Session;
                }

When the report file is approx 16 MB or larger, we get an exception of type 'System.OutOfMemoryException'.

Stack Trace: at System.String.GetStringForStringBuilder(String value, Int32 startIndex, Int32 length, Int32 capacity) at System.Text.StringBuilder.GetNewString(String currentString, Int32 requiredLength) at System.Text.StringBuilder.Append(Char[] value, Int32 startIndex, Int32 charCount) at System.IO.StreamReader.ReadToEnd() at Stimulsoft.Report.StiReport.SaveDocumentToString() at Stimulsoft.Report.StiReport.SavePackedDocumentToString() at Stimulsoft.Report.WebFx.StiWebViewerFx.ProcessReport() at Stimulsoft.Report.WebFx.StiWebViewerFx.set_Report(StiReport value) at Mercer.ePRISM.Web.UI.analysis.ReportViewerPopup.OnPreRender(EventArgs e) at System.Web.UI.Control.PreRenderRecursiveInternal() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Is there some other way of loading large report files into the viewer that will avoid the out of memory issue?

[Jan]

Hello,

Can you send sample project to support@stimulsoft.com ? How many pages you receive in standalone report designer when preview report?

Thank you.