Crystal .NET上没有显示Crystal报表 [英] Crystal report not showing on ASP .NET

问题描述

我问的是一个常见的问题（抱歉）。我有很多例子，但我无法解决我的错误。我的问题是，我想在我的网页上显示水晶报告（使用visual studio 2010 - asp .Net& c＃），但它是空白的（没有错误发生）。我注意到有几篇文章有同样的问题，但我没有弄清楚确切的问题。请帮我找出问题所在。在此先感谢。



我尝试过：



在网上.config

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

        <httpHandlers>
    <add verb="GET" path="CrystalImageHandler.aspx" type="CrystalDecisions.Web.CrystalImageHandler, CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
    </httpHandlers>
<assemblies>
        <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=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="Microsoft.ReportViewer.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="Microsoft.Build.Framework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
        <add assembly="System.Management, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
      </assemblies>
  <buildProviders>
        <add extension=".rpt" type="CrystalDecisions.Web.Compilation.RptBuildProvider, CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
      </buildProviders>
    <handlers>
    <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"/>
    </handlers>

On .asp Page

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页面

On .cs Page

DataTable _Data = Get_Data();

ReportDocument _rpt = new ReportDocument();
_rpt.Load(Server.MapPath("CrystalReport.rpt"));
_rpt.SetParameterValue("Report_Data", "Hello! How are you?");
_rpt.SetDataSource(_Data);
crv_Report.ReportSource = _rpt;
crv_Report.DataBind();

推荐答案

最快的方法是找出为什么它不显示是使用调试器来进入你的代码。



三个可能的问题：



（1）如果你验证RPT文件指向正确的位置。

（2）验证您在RPT中设置的DataSource。在你的情况下_Data。是否有返回的行？

（3）验证您在RPT中传递的参数是否匹配。



这是一个我在谷歌上发现了几个关于如何在ASP.NET中使用Crytal报告的教程：



如何在ASP.NET Webforms中创建Crystal Reports [^]

在ASP.Net中创建Crystal Reports报告

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

这篇关于Crystal .NET上没有显示Crystal报表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！