ICachedReport Interface

Cette interface identifie une classe d'implémentation pouvant être mise en cache dans l'objet Cache ASP.NET à l'aide du SDK de Crystal Reports.

Pour obtenir la liste de tous les membres de ce type, voir les membres de la classe ICachedReport.

ICachedReport

[Visual Basic]

Public Interface ICachedReport
   Inherits System.Object

[C#]

public interface ICachedReport : System.Object

Remarques

Pour utiliser le mécanisme de mise en cache intégré, implémentez cette interface dans votre propre classe. Les méthodes et propriétés que vous implémentez seront appelées par le modèle d'objet ReportDocument pour extraire les informations nécessaires à la mise en cache de vos rapports. Attribuez une instance de votre classe à la propriété ReportSource du contrôle CrystalReportViewer pour permettre la mise en cache.

Exemple

[Visual Basic]

      Imports System
      Imports System.ComponentModel
      Imports CrystalDecisions.CrystalReports.Engine
      Imports CrystalDecisions.ReportSource
      Imports CrystalDecisions.Shared
      
      Public Class CachedReport
         Inherits Component
         Implements ICachedReport
      
         Private blIsCacheable As Boolean
         Private blShareDBLogonInfo As Boolean
         Private tsCacheTimeOut As TimeSpan
         Private Report As New ReportDocument()
         Private reportName As String
      
         Public Sub New(ByVal s As String)
            reportName = s
         End Sub
      
         Public Overridable Property IsCacheable() As [Boolean] _
            Implements CrystalDecisions.ReportSource.ICachedReport.IsCacheable
            Get
                Return blIsCacheable
            End Get
            Set(ByVal Value As [Boolean])
                blIsCacheable = Value
            End Set
         End Property
      
         Public Overridable Property ShareDBLogonInfo() _
            As [Boolean] Implements _
            CrystalDecisions.ReportSource.ICachedReport.ShareDBLogonInfo
            Get
              Return blShareDBLogonInfo
            End Get
            Set(ByVal Value As [Boolean])
               blShareDBLogonInfo = Value
            End Set
         End Property
      
         Public Overridable Property CacheTimeOut() _
            As TimeSpan Implements _
            CrystalDecisions.ReportSource.ICachedReport.CacheTimeOut
            Get
               Return tsCacheTimeOut
            End Get
            Set(ByVal Value As TimeSpan)
               tsCacheTimeOut = Value
            End Set
         End Property
      
      
         Public Overridable Function CreateReport() _
            As ReportDocument Implements _
            CrystalDecisions.ReportSource.ICachedReport.CreateReport
            Report.Load _
               (reportName, OpenReportMethod.OpenReportByTempCopy)
            Report.Site = Me.Site
            Return Report
         End Function
      
         Public Overridable Function GetCustomizedCacheKey _
            (ByVal request As RequestContext)
            As [String] Implements _
            CrystalDecisions.ReportSource. _
            ICachedReport.GetCustomizedCacheKey
      
            Dim key As [String] = Nothing
   
            key = RequestContext.BuildCompleteCacheKey _
               (request, reportName, Me.GetType(), Me.ShareDBLogonInfo)
            Return key
         End Function
      End Class
      

[C#]

      using System;
      using System.ComponentModel;
      using CrystalDecisions.CrystalReports.Engine;
      using CrystalDecisions.ReportSource;
      using CrystalDecisions.Shared;
      
      public class CachedReport : Component, ICachedReport
      {
         protected ReportDocument Report = new ReportDocument();
         protected bool isCacheable;
         protected bool shareDBLogonInfo;
         protected string reportName;
         protected TimeSpan cacheTimeOut;
      
         public CachedReport(string s)
         {
            reportName = s;
         }
      
         public virtual Boolean IsCacheable
         {
            get
            {
               return isCacheable;
            }
            set
            {
               isCacheable = value;
            }
         }
         public virtual Boolean ShareDBLogonInfo
         {
            get
            {
               return shareDBLogonInfo;
            }
            set
            {
               shareDBLogonInfo = value;
            }
         }
      
         public virtual TimeSpan CacheTimeOut
         {
            get
            {
               return cacheTimeOut;
            }
            set
            {
               cacheTimeOut = value;
            }
         }
      
         public virtual ReportDocument CreateReport()
         {
            Report.Load
               (reportName, OpenReportMethod.OpenReportByTempCopy);
            Report.Site = this.Site;
            return Report;
         }
      
         public virtual String GetCustomizedCacheKey
            (RequestContext request)
         {
            String key = null;
      
            key = RequestContext.BuildCompleteCacheKey(
                request,
                reportName,
                this.GetType(),
                this.ShareDBLogonInfo);
             return key;
         }
      }
      

Configuration requise

Espace de noms CrystalDecisions.ReportSource

Assembly CrystalDecisions.ReportSource (CrystalDecisions.ReportSource.dll)

Voir aussi

ICachedReport Membres | CrystalDecisions.ReportSource Espace de noms

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