Crystal Reports（水晶報表）是一款商務智能（BI）軟件，主要用於設計及產生報表。是業內最專業、功能最強的報表系統。
查看網絡資料及課本圖書，鮮有介紹通過.NET Objects作為數據源填充水晶報表的示例。本文將通過兩個簡單的示例演示水晶報表填充.Net Objects數據源的過程。
示例一：打印學生信息（一個.NET Objects數據源的填充）
示例效果：
Student.cs
using System;
using System.Collections.Generic;
using System.Web;
namespace CrystalReportsDemo
{
public class Student
{
public Student(string studentNo,string studentName,string sex,int age)
{
this.StudentNo = studentNo;
this.StudentName = studentName;
this.Sex = sex;
this.Age = age;
}
public string StudentNo
{ set; get; }
public string StudentName
{ set; get; }
public string Sex
{ get; private set; }
public int Age
{ get; private set; }
}
}
將其編譯后，即可通過數據庫專家將其作為數據源導入到字段資源管理器。
繪制報表樣式並插入數據庫字段：
在Default.aspx頁面拖入CrystalReportViewer控件：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="CrystalReportsDemo._Default" %>
<%@ 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>
<CR:CrystalReportViewer ID="crvReport" runat="server" AutoDataBind="true" />
</div>
</form>
</body>
</html>
Default.aspx.cs
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace CrystalReportsDemo
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
FillReport();
}
private void FillReport()
{
List<Student> studentList = new List<Student>();
studentList.Add(new Student("200901001", "學生一", "男", 23));
studentList.Add(new Student("200901002", "學生二", "男", 24));
studentList.Add(new Student("200901003", "學生三", "女", 22));
studentList.Add(new Student("200901004", "學生四", "男", 23));
studentList.Add(new Student("200901005", "學生五", "女", 25));
studentList.Add(new Student("200901006", "學生六", "男", 23));
CrStudents studentsReport = new CrStudents();
studentsReport.SetDataSource(studentList);
crvReport.ReportSource = studentsReport;
}
}
}
示例二：打印學生成績（多個.NET Objects數據源的填充）
示例效果：
Subject.cs
using System;
using System.Collections.Generic;
using System.Web;
namespace CrystalReportsDemo
{
public class Subject
{
public Subject(string subjectName,string subjectType,double result,string comment)
{
this.SubjectName = subjectName;
this.SubjectType = subjectType;
this.Result = result;
this.Comment = comment;
}
public string SubjectName
{ set; get; }
public string SubjectType
{ set; get; }
public double Result
{ set; get; }
public string Comment
{ set; get; }
}
}
主報表：（CrSupReport.rpt）
子報表：（CrSubReport.rpt）
Default2.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default2.aspx.cs" Inherits="CrystalReportsDemo.Default2" %>
<%@ 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>
<CR:CrystalReportViewer ID="crvReport2" runat="server" AutoDataBind="true" />
</div>
</form>
</body>
</html>
Default2.aspx.cs
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using CrystalDecisions.CrystalReports.Engine;
namespace CrystalReportsDemo
{
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
FillReport();
}
private void FillReport()
{
List<Student> studentList = new List<Student>();
studentList.Add(new Student("200901001", "學生一", "男", 23));
ReportDocument supReport = new CrSupReport();
supReport.SetDataSource(studentList);
crvReport2.ReportSource = supReport;
List<Subject> subjectList = new List<Subject>();
subjectList.Add(new Subject("語文","文科",90,"評語"));
subjectList.Add(new Subject("數學", "理科", 90, "評語"));
subjectList.Add(new Subject("工程學", "工科", 80, "評語"));
subjectList.Add(new Subject("現代醫學", "醫學", 90, "評語"));
ReportDocument subReport = supReport.Subreports["CrSubReport"];
subReport.SetDataSource(subjectList);
}
}
}