Crystal Reports Viewer不會越過第2頁

22

問題可能源於在Page_Load事件期間設置Crystal Report Viewer控件的ReportSource。這會導致頁面加載時頁面信息被覆蓋，所以「當前頁面」在它應該爲2時被重新設置爲1.

作爲一種簡單的解決方案，您可以將設置的代碼ReportSource到Page_Init

2009-08-27 19:17:18 Ryan

+0

非常感謝你！ – Slovo 2015-12-16 11:23:09

+0

轉到Page_Init確實可以解決問題，但現在我遇到了關閉其報告源的問題。我想調用這些方法 report.Close（）; report.Dispose（）; 但我無法在Page_Init中調用它們。在不關閉連接的情況下，用戶在使用報表一段時間後出現此錯誤：Crystal Reports例外：系統管理員配置的最大報表處理作業限制已達到 – stillsmallvoice 2016-04-28 20:50:26

+0

@stillsmallvoice爲報表源使用字段而不是本地變量，並在頁面Dispose（）覆蓋中處理它。 – 2016-12-02 05:59:11

0

我以前有這個問題在Visual Studio 2008中，安裝Crystal Reports基本服務包1解決了這個問題

來源

2009-12-02 19:19:03 lausite

0

我有這樣的問題太多，檢查是否有沒有其他的WebControl水晶干擾（回調問題？JavaScript？我不確定）。在我的具體情況中，Dart File Upload和Crystal在放入同一頁面時相處得不好。

來源

2010-09-03 09:16:02 eternal

4

if (!Page.IsPostBack) 
{ 
    //Write your Report display code 

    crystalRep.Load(Server.MapPath("DueFD.rpt")); 
    crystalRep.SetDatabaseLogon(DB_UId, DB_Pass, Serv_Name, DB_Name); 
    CrystalReportViewer1.ReportSource = crystalRep; 

    // session code 
    ReportDocument doc = (ReportDocument)Session["ReportDocument"]; 
    CrystalReportViewer1.ReportSource = doc; 
} 
else 
{ 
    ReportDocument doc = (ReportDocument)Session["ReportDocument"]; 
    CrystalReportViewer1.ReportSource = doc; 
}

來源

2012-03-09 09:49:35 Harshal

5

手動

this.Init += new System.EventHandler(this.Page_Init).

添加在InitializeCompnent（）的Page_Init（）事件，並將其連接向上移動的Page_Load內容以Page_Init()。

在PageInIt中添加if (!IsPostBack)條件。

protected void Page_Init(object sender, EventArgs e) { 

    if (!IsPostBack) 
    { 
     ReportDocument crystalReportDocument = new ReportDocumment(); 
     crystalReportDocument.SetDataSource(DataTableHere); 
     _reportViewer.ReportSource = crystalReportDocument; 
     Session["ReportDocument"] = crystalReportDocument; 
    } 
    else 
    { 
      ReportDocument doc = (ReportDocument)Session["ReportDocument"]; 
      _reportViewer.ReportSource = doc; 
    } 
}

來源

2014-03-04 10:56:54

+0

謝謝。，最佳答案。 – Ramunas 2016-11-28 08:35:35

0

我把所有的加載報告放在Page_Init中而不是Page_Load中。它工作正常。

來源

2014-09-03 08:05:13

0

對我來說，這工作得很好，直到我從13.0.1升級到13.0.10，所以清楚地改變了一些東西。

我已經嘗試了上述解決方案，但是由於我們發回以更新報告參數，並且如果您沒有在頁面加載上設置報告參數，事實很複雜，刷新失敗。所以截至今日，我還沒有得到它的工作，沒有在頁面加載的東西。

我懷疑我可能不得不添加一些邏輯來檢查已更改的參數值，並且只有在更改後才刷新報告。

來源

2015-07-03 11:26:07

1

把報告來源Page_Init代替的Page_Load 和報表參數的Page_Load 我認爲它的工作原理大概

來源

2016-03-04 20:00:16

1

這對我的作品！

ReportDocument rd = new ReportDocument(); 

     protected void Page_Load(object sender, EventArgs e) 
     {   
      string rptpath = WebConfigurationManager.AppSettings["ReportPath"].Replace("{TID}", Convert.ToString(Session["TID"])); 
      rd.Load(rptpath); 

      DataTable dtable = TemplateModel.LoadChequeData(Convert.ToString(Session["CID"])); 
      rd.SetDataSource(dtable);   
     } 

     protected void Page_Init(object sender, EventArgs e) 
     { 
      CrystalReportViewer1.ReportSource = rd; 
     }

來源

2016-05-21 14:20:11

0

我有一些共享的方法。我開發了可幫助呈現Crystal Reports的簡單CR包裝器。按原樣使用此代碼。請隨意修改，擴展代碼的任何部分。下載鏈接https://1drv.ms/u/s!AlTLBrnU_bLUiaoUxcxNiRCZRQjWng

而樣本如何利用包裝類使用CR包裝類enter code here實現IDisposable接口。在Page_Init中設置報告源並在Page_Load事件中報告參數，並在Page_Unload事件中處理報告文檔。
第二種方法使用靜態類並將報表渲染到報表上，最後處理報表文檔。報告源應保存到會話變量中。請注意，第二種方法並不適用於高流量的Web應用程序，因爲使用了靜態類。如果兩個用戶同時運行任何報告，則會發生衝突。

方法1

using System; 
using System.Linq; 
using CrystalDecisions.Shared; 
using System.Configuration; 
using System.Web.Configuration; 
using WebReports.Models.Helpers.CrystalReports; //Reference to CR wrapper 


namespace YourNamespace 
{ 
    public partial class ReportForm : System.Web.UI.Page 
    { 

     protected string _serverName; 
     protected string _databaseName; 
     protected string _schemaName; 
     protected string _userId; 
     protected string _userPassword; 
     protected bool _integratedSecurity; 
     protected string _databaseType; 
     //Wrapper Report Document 
     protected CReportDocument _reportDocument; 

     /// <summary> 
     /// Load report 
     /// </summary> 
     /// <param name="sender"></param> 
     /// <param name="e"></param> 
     protected void Page_Init(object sender, EventArgs e) 
     { 
      //Wrapper object 
      this._reportDocument = new CReportDocument(); 

      //These settings should be initialized from i.e. web.config in Page_PreInit 

      this._reportDocument.ServerName = this._serverName; 
      this._reportDocument.DatabaseName = String.Empty; 
      this._reportDocument.SchemaName = this._schemaName; 
      this._reportDocument.DatabaseType = CReportDatabaseType.ORACLE; 
      this._reportDocument.UserId = this._userId; 
      this._reportDocument.UserPassword = this._userPassword; 
      this._reportDocument.IntegratedSecurity = false; 


      //Get report name from query string. Define Your own method to get report name 
      var parReportName = Request.QueryString["reportname"]; 

      if (String.IsNullOrEmpty(parReportName)) 
      { 
       lblConfigError.Text = "Crystal Report name is not being provided."; 
       return; 
      } 

      //Set Report file 
      this._reportDocument.ReportFile = Server.MapPath("~/ReportFiles/") + parReportName; 
      //Set Report documant 
      this._reportDocument.SetReportDocument(); 
      //Get Report Document 
      crViewer.ReportSource = this._reportDocument.GetReportDocument(); 

     } 

     protected void Page_Load(object sender, EventArgs e) 
     { 

      CReportParameter reportParameter; 

      //Get parameters Your own method to provide report parameters 
      var parFimYear = RouteData.Values["par1"]; 
      var parFimCityCode = RouteData.Values["par2"]; 

      if (par1 == null || par2 == null) 
      { 
       lblConfigError.Text = "Crystal Report parameters are not being provided."; 
       return; 
      } 

      //Define Report Parameter 
      reportParameter = new CReportParameter(); 
      reportParameter.ParameterName = "@parYear"; 
      reportParameter.ParameterValue = parFimYear; 
      reportParameter.crParameterValueKind = ParameterValueKind.StringParameter; 
      _reportDocument.AddCReportParameter(reportParameter); 

      reportParameter = new CReportParameter(); 
      reportParameter.ParameterName = "@parCityCode"; 
      reportParameter.ParameterValue = parFimCityCode; 
      reportParameter.crParameterValueKind = ParameterValueKind.StringParameter; 
      _reportDocument.AddCReportParameter(reportParameter); 

      //Set report parameters 
      this._reportDocument.SetReportParameters(); 

     } 

     protected void Page_Unload(object sender, EventArgs e) 
     { 
      this._reportDocument.Dispose(); 
     } 

    } 
}

方法2

using System; 
using System.Linq; 
using CrystalDecisions.Shared; 
using System.Configuration; 
using System.Web.Configuration; 
using CrystalDecisions.CrystalReports.Engine; 
using WebReports.Models.Helpers.CrystalReports; //Reference to CR wrapper 

namespace YourNamespace 
{ 
    public partial class ReportForm : System.Web.UI.Page 
    { 

     protected string _serverName; 
     protected string _databaseName; 
     protected string _schemaName; 
     protected string _userId; 
     protected string _userPassword; 
     protected bool _integratedSecurity; 
     protected string _databaseType; 

     /// <summary> 
     /// Load report 
     /// </summary> 
     /// <param name="sender"></param> 
     /// <param name="e"></param> 
     protected void Page_Init(object sender, EventArgs e) 
     { 
      CReportParameter reportParameter; 

      //These settings should be initialized from i.e. web.config in Page_PreInit 

      if (!IsPostBack) 
      { 
       if (this._databaseType == CReportDatabaseType.ORACLE.ToString()) 
       { 
        //static wrapper class 
        CReportDocumentManager.ServerName = this._serverName; 
        CReportDocumentManager.DatabaseName = String.Empty; 
        CReportDocumentManager.SchemaName = this._schemaName; 
        CReportDocumentManager.DatabaseType = CReportDatabaseType.ORACLE; 
        CReportDocumentManager.UserId = this._userId; 
        CReportDocumentManager.UserPassword = this._userPassword; 
        CReportDocumentManager.IntegratedSecurity = false; 

        //Get report name from query string. Define Your own method to get report name 
        var parReportName = Request.QueryString["reportname"]; 

        if (String.IsNullOrEmpty(parReportName)) 
        { 
         lblConfigError.Text = "Crystal Report name is not being provided."; 
         return; 
        } 
         //get par1. Your own method to provide report parameters. This is from MVC application 
         var par1 = RouteData.Values["par1"]; 
         //get par2 
         var par2 = RouteData.Values["par2"]; 

         if (par1 == null || par2 == null) 
         { 
          lblConfigError.Text = "Crystal Report parameters are not being provided."; 
          return; 
         } 

         reportParameter = new CReportParameter(); 
         reportParameter.ParameterName = "@parYear"; 
         reportParameter.ParameterValue = par1; 
         reportParameter.CReportParameterValueKind = ParameterValueKind.StringParameter; 
         CReportDocumentManager.AddCReportParameter(reportParameter); 

         reportParameter = new CReportParameter(); 
         reportParameter.ParameterName = "@parCityCode"; 
         reportParameter.ParameterValue = par2; 
         reportParameter.CReportParameterValueKind = ParameterValueKind.StringParameter; 
         CReportDocumentManager.AddCReportParameter(reportParameter); 



        CReportDocumentManager.ReportFile = Server.MapPath("~/ReportFiles/") + parReportName; 
        ReportDocument doc = CReportDocumentManager.GetCReportDocument(); 
        crViewer.ReportSource = doc; 
        Session[parReportName] = doc; 

       } 
      } 
      else 
      { 
       var parReportName = Request.QueryString["reportname"]; 
       ReportDocument doc = (ReportDocument)Session[parReportName]; 
       crViewer.ReportSource = doc; 

      }     
     } 

    } 
}

來源

2016-10-04 16:17:43

Crystal Reports Viewer不會越過第2頁

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