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Hi, I am asking a common problem (and sorry for this). I got lots of example, but I am not able to fix my error. My problem is, I want to show crystal report on my web page (using visual studio 2010 - asp .Net & c#), but it is coming blank (no error occur). I noticed several article with same issue, but I fail to figure out exact problem. Please help me to find out the problem. Thanks in advance.

What I have tried:

On web.config
    <add verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
        <add assembly="CrystalDecisions.CrystalReports.Engine, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
        <add assembly="CrystalDecisions.ReportSource, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
        <add assembly="CrystalDecisions.Shared, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
        <add assembly="CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
        <add assembly="CrystalDecisions.ReportAppServer.ClientDoc, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
        <add assembly="Microsoft.ReportViewer.WebForms, Version=, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="Microsoft.ReportViewer.Common, Version=, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="Microsoft.Build.Framework, Version=, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Management, Version=, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add extension=".rpt" type="CrystalDecisions.Web.Compilation.RptBuildProvider, CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
    <add name="CrystalImageHandler.aspx_GET" verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" preCondition="integratedMode"/>

On .asp Page

<%@ Register Assembly="CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" Namespace="CrystalDecisions.Web" TagPrefix="CR" %>

    <CR:CrystalReportViewer ID="crv_Report" runat="server" Height="550px" Width="350px" AutoDataBind="True" /> 

On .cs Page
DataTable _Data = Get_Data();

ReportDocument _rpt = new ReportDocument();
_rpt.SetParameterValue("Report_Data", "Hello! How are you?");
crv_Report.ReportSource = _rpt;
Updated 31-Aug-18 4:15am

1 solution

The quickest way is figure out why it's not displaying is to use the debugger to step into your code.

Three possible issues:

(1) Verify the RPT file if you are pointing to the correct location.
(2) Verify DataSource that you set in your RPT. In your case the _Data. Does it have a rows returned?
(3) Verify the parameter that you passed in your RPT if it matched.

Here are a couple of tutorials I found on google on how to work with Crytal Reports in ASP.NET:

How to Create Crystal Reports in ASP.NET Webforms[^]
Create Crystal Reports Report in ASP.Net
Subrata.In 31-Aug-18 15:36pm
Thank you vary much for your reply, and also thanks for your link. It is very help full. But sorry to say that I am not able to figure out the problem.
1. Yes, report file in correct location.
2. Data Source & Data Structure are correct and also loading data properly (I used it on GridView for checking).
3. Parameter also correct.

There is no error/exception occur. I try to figure out by step by step break point, which is given below.
ReportDocument _rpt = new ReportDocument();
-> So many exception
-> HasRecords = '_rpt.HasRecords' threw an exception of type 'CrystalDecisions.CrystalReports.Engine.LogOnException'
_rpt.SetParameterValue("Report_Data", "Hello! How are you?");
-> Same as above
-> HasRecords = Function evaluation timed out. And all after this
crv_Report.ReportSource = _rpt;
-> DefaultXmlExportSelection = '_rpt.DefaultXmlExportSelection' threw an exception of type 'System.NullReferenceException'

Please Note:
a) At the time of designing I use belo table/database for preparing report :
MS OLEDB Provider for SQL Server -> A Demo Databse which store tables as per require data structure
b) On your 1st example :
rpt_Demo _rpt = new rpt_Demo()
where I use :
ReportDocument _rpt = new ReportDocument();

That's only the diff (I can not access rpt_Demo directly, it throwing [The type or namespace name 'rpt_Demo' could not be found (are you missing a using directive or an assembly reference?)]).

Sorry for lengthy reply.

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