大名鼎鼎的 Crystal Reports(水晶报表)已内嵌为微软 Visual Studio .NET的标准报表工具,同时升级到 Crystal Reports for Visual Studio .NET。它的优点是:1、在 .NET 平台能够轻松创建交互式的、高质量显现的报表内容,这也是 Crystal Reports 长期以来所具有的主要优势;2、使用 Crystal Reports for Visual Studio .NET,可以在 Web 平台和 Windows 平台上承载报表,并将 Crystal 报表作为报表 Web 服务在 Web 服务器上发布;3、利用Crystal Report 创建的Web应用程序,使用户可以深化图表并根据需要筛选信息。在 .NET 中,图表实际上就是一个与应用程序中其他控件进行交互的 Crystal 报表。在这里我向大家介绍如何在 Windows 窗体应用程序中浏览水晶报表。
设计步骤:
1、软件环境:要求系统已安装Visual Studio .Net 集成开发系统,仅装有 .Net Framework SDk 不能实现本例效果,成为 .Net Framework SDK 没有水晶报表控件。
2、新建一个 Visual C# 项目 Windows 应用程序,设置Form1的Text="水晶报表浏览器",StartPosition=CenterScreen //程序开始出现在屏幕中央,其它属性均保持默认;
3、从工具箱拖入一个CrystalReportViewer,一个Button,一个openFileDialog,到窗体。
整个设计器的窗体布局只需将button1置于窗体底边中部,不再需要其它多余布局。
设置crystalReportViewer1的属性如下:
this.crystalReportViewer1.Dock = System.Windows.Forms.DockStyle.Fill;
//停靠方式为充满整个窗体
//展开+DockPadding
this.crystalReportViewer1.DockPadding.Bottom = 50;
//底部空出放置Button的区域
this.crystalReportViewer1.DockPadding.Left = 5;
this.crystalReportViewer1.DockPadding.Right = 5;
this.crystalReportViewer1.DockPadding.Top = 5;
this.crystalReportViewer1.ReportSource = null;
//先不载入报表资源
设置button1的属性如下:
this.button1.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
//与窗体的下边保持固定
this.button1.Text = "打开报表";
openFileDialog1是打开文件的控件,设置其属性如下:
this.openFileDialog1.Filter
= "Crystal Report (*.rpt) *.rpt 所有文件(*.*) *.*";
//提供打开文件对话框的文件类型,
默认类型就是此字符串的最前一种定义的类型
this.openFileDialog1.Title = "打开水晶报表";
//打开文件对话框的标题
布局效果图如下:
4、双击button1,添加button1_Click点击事件:
private void button1_Click(object sender, System.EventArgs e)
{
try
{
if(openFileDialog1.ShowDialog()==DialogResult.OK)
this.crystalReportViewer1.ReportSource = @openFileDialog1.FileName;
//加载水晶报表,将报表文件绑定到CrystalReportView 控件;
}
catch(Exception error)
{
MessageBox.Show(error.ToString(),"错误");
}
}
5、OK!按Ctrl+F5运行吧。
可以浏览你系统内现有的报表实例:
...\Program Files\Microsoft Visual Studio .NET\Crystal Reports\Samples\Reports\Feature Examples\Chart.rpt
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace WindowsApplication10
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private CrystalDecisions.Windows.Forms.CrystalReportViewer crystalReportViewer1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.crystalReportViewer1 = new
CrystalDecisions.Windows.Forms.CrystalReportViewer();
this.button1 = new System.Windows.Forms.Button();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.SuspendLayout();
//
// crystalReportViewer1
//
this.crystalReportViewer1.ActiveViewIndex = -1;
this.crystalReportViewer1.Dock= System.Windows.Forms.DockStyle.Fill;
this.crystalReportViewer1.DockPadding.Bottom = 50;
this.crystalReportViewer1.DockPadding.Left = 5;
this.crystalReportViewer1.DockPadding.Right = 5;
this.crystalReportViewer1.DockPadding.Top = 5;
this.crystalReportViewer1.Name = "crystalReportViewer1";
this.crystalReportViewer1.ReportSource = null;
this.crystalReportViewer1.Size = new System.Drawing.Size(292, 273);
this.crystalReportViewer1.TabIndex = 0;
//
// button1
//
this.button1.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
this.button1.Location = new System.Drawing.Point(104, 240);
this.button1.Name = "button1";
this.button1.TabIndex = 1;
this.button1.Text = "打开报表";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// openFileDialog1
//
this.openFileDialog1.Filter = "Crystal Report (*.rpt) *.rpt 所有文件(*.*) *.*";
this.openFileDialog1.Title = "打开水晶报表";
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button1,
this.crystalReportViewer1});
this.Name = "Form1";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "水晶报表浏览器";
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e)
{
try
{
if(openFileDialog1.ShowDialog()==DialogResult.OK)
this.crystalReportViewer1.ReportSource = @openFileDialog1.FileName;
//加载水晶报表,将资源报表绑定到水晶报表查看器
}
catch(Exception error)
{
MessageBox.Show(error.ToString(),"错误"); //处理异常错误
}
}
}
}
……