【IT168技术】在CodePlex 上经常可以发现一些好东西, 关键是有没有时间去淘宝.前几天就发现一个, 并且在实际工作中使用了:* DoddleReport.
你有没有被要求基于来自数据库的数据,生成一个报表? 我们时不时会有类似的需求.
DoddleReport极大的简化了这方面的工作量.
首先你需要下载它的Dll 文件, 可以到 codeplex 中得到http://doddlereport.codeplex.com/。得到的是一样的文件, 将它解压到你的一个asp.net 网站的bin目录下. 你就可以引用Doddle的类了.
我们来模拟一个场景(本场景是根据DoddleReport提供的sample 代码改编的):
创建一个aspx页面, 加入下面的代码:
创建一个Product 类:
public class Product
{
public int Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public double Price { get; set; }
public int OrderCount { get; set; }
public DateTime LastPurchase { get; set; }
public int UnitsInStock { get; set; }
}
{
public int Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public double Price { get; set; }
public int OrderCount { get; set; }
public DateTime LastPurchase { get; set; }
public int UnitsInStock { get; set; }
}
随机生成1000个Product的数据, 方便我们测试结果:
public static List<Product> GetAll()
{
var rand = new Random();
return Enumerable.Range(1, 1000)
.Select(i => new Product
{
Id = i,
Name = "产品 " + i,
Description =
{
var rand = new Random();
return Enumerable.Range(1, 1000)
.Select(i => new Product
{
Id = i,
Name = "产品 " + i,
Description =
"描述...",
Price = rand.NextDouble() * 100,
OrderCount = rand.Next(1000),
LastPurchase = DateTime.Now.AddDays(rand.Next(1000)),
UnitsInStock = rand.Next(0, 2000)
Price = rand.NextDouble() * 100,
OrderCount = rand.Next(1000),
LastPurchase = DateTime.Now.AddDays(rand.Next(1000)),
UnitsInStock = rand.Next(0, 2000)
})
.ToList();
.ToList();
}
下面我们要用到DoddleReport的类:
protected void Page_Load(object sender, EventArgs e)
{
// Get the data for the report (any IEnumerable will work)
var query = GetAll();
// Create the report and turn our query into a ReportSource
var report = new Report(query.ToReportSource());
// Customize the Text Fields
report.TextFields.Title = "报告的标题";
report.TextFields.SubTitle = "副标题";
report.TextFields.Footer = "页脚";
report.TextFields.Header = string.Format(@"制作时间: {0}", DateTime.Now);
// Render hints allow you to pass additional hints to the reports as they are being rendered
report.RenderHints.BooleanCheckboxes = true;
// Customize the data fields
report.DataFields["Id"].Hidden = true;
report.DataFields["Price"].DataFormatString = "{0:c}";
report.DataFields["LastPurchase"].DataFormatString = "{0:d}";
var writer = new HtmlReportWriter();
writer.WriteReport(report, Response.OutputStream);
}
{
// Get the data for the report (any IEnumerable will work)
var query = GetAll();
// Create the report and turn our query into a ReportSource
var report = new Report(query.ToReportSource());
// Customize the Text Fields
report.TextFields.Title = "报告的标题";
report.TextFields.SubTitle = "副标题";
report.TextFields.Footer = "页脚";
report.TextFields.Header = string.Format(@"制作时间: {0}", DateTime.Now);
// Render hints allow you to pass additional hints to the reports as they are being rendered
report.RenderHints.BooleanCheckboxes = true;
// Customize the data fields
report.DataFields["Id"].Hidden = true;
report.DataFields["Price"].DataFormatString = "{0:c}";
report.DataFields["LastPurchase"].DataFormatString = "{0:d}";
var writer = new HtmlReportWriter();
writer.WriteReport(report, Response.OutputStream);
}
首先用我们的数据生成一个Report的实例; 然后指定Report的一些属性, 例如标题, 页眉, 页脚(很酷,是吗). 再指定一些列的属性, 例如隐藏ID, 和给一些列特殊的格式.
最后调用ReportWriter将数据写出到页面.
下面是生成的截图:
如果你要生成Excel 或者CSV(以逗号或者tab为分隔符的文件)可以简单的修改ReportWriter后面的代码为:
string s = Request.PhysicalApplicationPath;
var exWriter = new ExcelReportWriter();
exWriter.WriteReport(report, System.IO.File.Create(s + "fil7.xls"));
var exWriter = new ExcelReportWriter();
exWriter.WriteReport(report, System.IO.File.Create(s + "fil7.xls"));
或者
var deWriter = new DelimitedTextReportWriter();
deWriter.WriteReport(report, System.IO.File.Create(s + "fil7.csv"));
deWriter.WriteReport(report, System.IO.File.Create(s + "fil7.csv"));
可以看看效果:
