Crystal Reports Viewer不会越过第2页

22

问题可能源于在Page_Load事件期间设置Crystal Report Viewer控件的ReportSource。这会导致页面加载时页面信息被覆盖，所以“当前页面”在它应该为2时被重新设置为1.

作为一种简单的解决方案，您可以将设置的代码ReportSource到Page_Init

2009-08-27 19:17:18 Ryan

+0

非常感谢你！ – Slovo 2015-12-16 11:23:09

+0

转到Page_Init确实可以解决问题，但现在我遇到了关闭其报告源的问题。我想调用这些方法 report.Close（）; report.Dispose（）; 但我无法在Page_Init中调用它们。在不关闭连接的情况下，用户在使用报表一段时间后出现此错误：Crystal Reports例外：系统管理员配置的最大报表处理作业限制已达到 – stillsmallvoice 2016-04-28 20:50:26

+0

@stillsmallvoice为报表源使用字段而不是本地变量，并在页面Dispose（）覆盖中处理它。 – 2016-12-02 05:59:11

0

我以前有这个问题在Visual Studio 2008中，安装Crystal Reports基本服务包1解决了这个问题

来源

2009-12-02 19:19:03 lausite

0

我有这样的问题太多，检查是否有没有其他的WebControl水晶干扰（回调问题？JavaScript？我不确定）。在我的具体情况中，Dart File Upload和Crystal在放入同一页面时相处得不好。

来源

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; 
}

来源

2012-03-09 09:49:35 Harshal

5

手动

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

添加在InitializeCompnent（）的Page_Init（）事件，并将其连接向上移动的Page_Load内容以Page_Init()。

在PageInIt中添加if (!IsPostBack)条件。

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; 
    } 
}

来源

2014-03-04 10:56:54

+0

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

0

我把所有的加载报告放在Page_Init中而不是Page_Load中。它工作正常。

来源

2014-09-03 08:05:13

0

对我来说，这工作得很好，直到我从13.0.1升级到13.0.10，所以清楚地改变了一些东西。

我已经尝试了上述解决方案，但是由于我们发回以更新报告参数，并且如果您没有在页面加载上设置报告参数，事实很复杂，刷新失败。所以截至今日，我还没有得到它的工作，没有在页面加载的东西。

我怀疑我可能不得不添加一些逻辑来检查已更改的参数值，并且只有在更改后才刷新报告。

来源

2015-07-03 11:26:07

1

把报告来源Page_Init代替的Page_Load 和报表参数的Page_Load 我认为它的工作原理大概

来源

2016-03-04 20:00:16

1

这对我的作品！

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; 
     }

来源

2016-05-21 14:20:11

0

我有一些共享的方法。我开发了可帮助呈现Crystal Reports的简单CR包装器。按原样使用此代码。请随意修改，扩展代码的任何部分。下载链接https://1drv.ms/u/s!AlTLBrnU_bLUiaoUxcxNiRCZRQjWng

而样本如何利用包装类使用CR包装类enter code here实现IDisposable接口。在Page_Init中设置报告源并在Page_Load事件中报告参数，并在Page_Unload事件中处理报告文档。
第二种方法使用静态类并将报表渲染到报表上，最后处理报表文档。报告源应保存到会话变量中。请注意，第二种方法并不适用于高流量的Web应用程序，因为使用了静态类。如果两个用户同时运行任何报告，则会发生冲突。

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; 

      }     
     } 

    } 
}

来源

2016-10-04 16:17:43

Crystal Reports Viewer不会越过第2页

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