用于构建Crystal Report的代码 [英] Code to build Crystal Report

问题描述

您好。我在page_load中有一个代码，它应该使用文本框中的会话ID来构建水晶报表。有人能告诉我为什么它不起作用？我做错了什么？

 使用系统; 
 使用 System.Collections.Generic; 
 使用 System.Collections; 
 使用 System.Linq; 
 使用 System.Web; 
 使用 System.Web.UI; 
 使用 System.Web.UI.HtmlControls; 
 使用 CrystalDecisions.Web; 
 使用 System.Web.UI.WebControls.WebParts; 
 使用 System.Web.UI.WebControls; 
 使用 CrystalDecisions.CrystalReports.Engine; 
 使用 CrystalDecisions.Shared; 
 使用 System.Data; 
 使用 System.Data.SqlClient; 
 使用 System.Configuration; 
 使用 System.Xml.Linq; 
 使用 System.Web.SessionState; 
 
 
 命名空间 SACSCOCLogin1._1 
 {
  public   partial   class  ReportA：System.Web.UI.Page 
 {
 受保护  void  Page_Load（ object  sender ，EventArgs e）
 {
 TextBoxINST_ID.Text = Session [  inst_id ]的ToString（）; 
 CrystalReportViewer1.Visible =  true ; 
 
 ReportDocument CrystalReport =  new  ReportDocument（）; 
 CrystalReport.Load（Server.MapPath（ 〜/ Reports / ReportA.rpt） ）; 
 CrystalReport.SetDatabaseLogon 
（  Admin，  master22， @  SQL，  Hot）; 
 CrystalReportViewer1.ReportSource = CrystalReport; 
 CrystalReportViewer1.DataBind（）; 
} 
} 
} 

这是标记代码：

 <％@     Page    语言  =  C＃    AutoEventWireup   =  true    CodeBehind   =  ReportA.aspx.cs   继承  =  SACSCOCLogin1._1.ReportA   ％>  
 
 <％@    注册    assembly   =  CrystalDecisions.Web，Version = 13.0.2000.0，Culture = neutral，PublicKeyToken = 692fbea5521e1304   命名空间  =  CrystalDecisions.Web    tagprefix   =  CR   ％>  
 
 <  ！DOCTYPE     html     PUBLIC     -  // W3C / / DTD     XHTML    < span class =code-attribute> 1.0     Transitional // EN   http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd >  
 
 <   html     xmlns   =  http://www.w3.org/1999/xhtml >  
 <   head     runat   =  server  >  
 <   title  >  <   / title  > ;  
 <   / head  >  
 <   body  >  
 <  表格    id   =  form1     runat   =  server >  
 <   div  >  
 
 <   asp：TextBox     ID   =  TextBoxINST_ID    runat   =  server >  <   / asp：TextBox  >  
 
 <   / div  >  
 <   CR：CrystalReportViewer     ID   =  CrystalReportViewer1      runat   =  server    
   
                < span class =code-attribute>   AutoDataBind   =  True    DisplayToolbar   =  False    EnableDatabaseLogonPrompt   =  False     
   
                   GroupTreeImagesFolderUrl   =     HasDrilldownTabs   =  False    
   
                < span class =code-attribute>   HasToggleGroupTreeButton   =  False    HasToggleParameterPanelButton   =  错误    
   
      < span class =code-attribute>            高度  =  1142px     ReportSourceID   = < span class =code-keyword> CrystalReportSource1    ToolbarImagesFolderUrl   =     
   
                   ToolPanelView   = 无    ToolPanelWidth   =   200px   宽度 < span class =code-keyword> =  868px    /  >  
 <   CR：CrystalReportSource     ID   =  CrystalReportSource1      runat   =  服务器 >  
  <  报告    FileName   =  Reports\Report1.rpt >  
 <   / Report  > ;  
 <   / CR：CrystalReportSource  >  
 <   / form  >  
 <   / body  >  
 <   / html  >  

解决方案

我想您忘记为Crystal Report添加数据绑定方法



设置ReportSource后尝试 CrystalReportViewer1.Databind（）方法

Hello. I have a code in page_load that should build the crystal report by using the session ID that is in the textbox. Can someone tell me why is it not working? What did I do wrong?

using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using CrystalDecisions.Web;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.WebControls;
using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Xml.Linq;
using System.Web.SessionState;


namespace SACSCOCLogin1._1
{
    public partial class ReportA : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            TextBoxINST_ID.Text = Session["inst_id"].ToString();
            CrystalReportViewer1.Visible = true;

            ReportDocument CrystalReport = new ReportDocument();
            CrystalReport.Load(Server.MapPath("~/Reports/ReportA.rpt"));
            CrystalReport.SetDatabaseLogon
            ("Admin", "master22", @"SQL", "Hot");
            CrystalReportViewer1.ReportSource = CrystalReport;
            CrystalReportViewer1.DataBind();
         }
    }
}

Here is the mark up code:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ReportA.aspx.cs" Inherits="SACSCOCLogin1._1.ReportA" %>

<%@ Register assembly="CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" namespace="CrystalDecisions.Web" tagprefix="CR" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        <asp:TextBox ID="TextBoxINST_ID" runat="server"></asp:TextBox>
    
    </div>
    <CR:CrystalReportViewer ID="CrystalReportViewer1"  runat="server" 

        AutoDataBind="True" DisplayToolbar="False" EnableDatabaseLogonPrompt="False" 

        GroupTreeImagesFolderUrl="" HasDrilldownTabs="False" 

        HasToggleGroupTreeButton="False" HasToggleParameterPanelButton="False" 

        Height="1142px" ReportSourceID="CrystalReportSource1" ToolbarImagesFolderUrl="" 

        ToolPanelView="None" ToolPanelWidth="200px" Width="868px" />
    <CR:CrystalReportSource ID="CrystalReportSource1"  runat="server">
        <Report FileName="Reports\Report1.rpt">
        </Report>
    </CR:CrystalReportSource>
    </form>
</body>
</html>

解决方案

I think you have forgot to add the Databind Method for the Crystal Report

try CrystalReportViewer1.Databind() method after setting ReportSource

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