Hvis du har grupperinger i din rapport. Fra .NET 4 og fremefter, da ældre CAS blev fjernet, tager RDLC-rapporter, der behandles lokalt, enorm tid til at udføre dynamiske grupperinger eller dynamiske filtre. Der er en eksisterende diskussion relateret til denne https://social.msdn.microsoft.com/Forums/sqlserver/en-US/6d89e2ce-3528-465f-9740-7e22aa7b7aae/slow-performance-with-dynamic-grouping-and- reportviewer-in-local-mode?forum=sqlreportingservices
Den bedste løsning, jeg har fundet blandt dem, er
1. Opret et nyt .NET 3.5-biblioteksprojekt og opret en fil, der udfører selve behandlingen af Rapport .
using Microsoft.Reporting.WebForms;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
//As you would expect, the new assembly WebReportviewer.FullTrustReportviewer
//all it does is just run the report. that's it. here is the code, it should be in a separated project:
namespace WebReportviewer
{
[Serializable]
public class FullTrustReportviewer : MarshalByRefObject
{
private ReportViewer FullTrust;
public FullTrustReportviewer()
{
FullTrust = new ReportViewer();
FullTrust.ShowExportControls = false;
FullTrust.ShowPrintButton = true;
FullTrust.ShowZoomControl = true;
FullTrust.SizeToReportContent = false;
FullTrust.ShowReportBody = true;
FullTrust.ShowDocumentMapButton = false;
FullTrust.ShowFindControls = true;
//FullTrust.LocalReport.SubreportProcessing += LocalReport_SubreportProcessing;
//FullTrust.LocalReport.SetBasePermissionsForSandboxAppDomain(new PermissionSet(PermissionState.Unrestricted));
}
public void Initialize(string DisplayName, string ReportPath, bool Visible, ReportParameter[] reportParam, string reportRenderFormat, string deviceInfo, string repMainContent, List<string[]> repSubContent)
{
FullTrust.LocalReport.DisplayName = DisplayName;
FullTrust.LocalReport.ReportPath = ReportPath;
//FullTrust.Visible = Visible;
//FullTrust.LocalReport.LoadReportDefinition(new StringReader(repMainContent));
FullTrust.LocalReport.SetParameters(reportParam);
repSubContent.ForEach(x =>
{
FullTrust.LocalReport.LoadSubreportDefinition(x[0], new StringReader(x[1]));
});
FullTrust.LocalReport.DataSources.Clear();
}
public byte[] Render(string reportRenderFormat, string deviceInfo)
{
return FullTrust.LocalReport.Render(reportRenderFormat, deviceInfo);
}
public void AddDataSources(string p, DataTable datatable)
{
FullTrust.LocalReport.DataSources.Add(new ReportDataSource(p, datatable));
}
public SubreportProcessingEventHandler SubreportProcessing { get; set; }
public static void LocalReport_SubreportProcessing(object sender, SubreportProcessingEventArgs e)
{
LocalReport lr = (LocalReport)sender;
e.DataSources.Clear();
ReportDataSource rds;
if (e.ReportPath.Contains("DataTable2"))
{
DataTable dt = (DataTable)lr.DataSources["DataTable2"].Value;
DataView dv = new DataView(dt);
dv.RowFilter = string.Format("Id={0}", e.Parameters["Id"].Values[0]);
rds = new ReportDataSource("DataTable2", dv.ToTable());
e.DataSources.Add(rds);
}
}
}
}
2. Kald koden fra det eksisterende projekt
public static byte[] GeneratePBAReport()
{
string l_spName = string.Empty;
string l_reportPath = string.Empty;
var repCol = new List<ReportDataSource>();
var repParCol = new ReportParameter[1];
if (id == "")
{
l_reportPath = HttpContext.Current.Server.MapPath("~\\.rdlc");
l_spName = "";
}
else
{
l_reportPath = HttpContext.Current.Server.MapPath("~\\.rdlc");
l_spName = "";
}
repParCol[0] = new ReportParameter("pID", "");
var ds = new DataSet();
using (var sqlCmd = new SqlCommand(l_spName, new SqlConnection(ConfigurationManager.ConnectionStrings[""].ConnectionString)))
{
sqlCmd.CommandType = CommandType.StoredProcedure;
var sqlParam = new SqlParameter() { Value = "", ParameterName = "" };
sqlCmd.Parameters.Add(sqlParam);
sqlCmd.CommandTimeout = 300;
using (var sqlAdapter = new SqlDataAdapter(sqlCmd))
{
sqlAdapter.Fill(ds);
}
}
var rds = new ReportDataSource();
rds.Name = "";
rds.Value = ds.Tables[0];
//l_report.DataSources.Add(rds);
repCol.Add(rds);
rds = new ReportDataSource();
rds.Name = "";
rds.Value = ds.Tables[1];
//l_report.DataSources.Add(rds);
repCol.Add(rds);
rds = new ReportDataSource();
rds.Name = "";
rds.Value = ds.Tables[2];
//l_report.DataSources.Add(rds);
repCol.Add(rds);
rds = new ReportDataSource();
rds.Name = "";
rds.Value = ds.Tables[3];
//l_report.DataSources.Add(rds);
repCol.Add(rds);
Warning[] warnings;
string[] streamids;
string mimeType;
string encoding;
string extension;
string deviceInfo;
deviceInfo = "<DeviceInfo><SimplePageHeaders>True</SimplePageHeaders></DeviceInfo>";
return NewDomainReport.Render("PDF", deviceInfo, "-" , l_reportPath, true, repCol, string.Empty, new List<string[]>(), repParCol);
}
For virkelig hurtig test kan du prøve at tilføje CAS i web.config som nævnt i artiklen.
I en ASP Net-applikation kan du bruge <trust legacyCasModel="true" level="Full"/>
i system.web-sektionen i web.config-filen for at opnå det samme resultat.
Hvis hastighederne viser væsentlig forbedring, vil ovenstående kode opføre sig på samme måde. Fordelen ved ovenstående kode er at skabe et separat AppDomain i stedet for at påvirke hele løsningen.