用 List<> 绑定对象到水晶报表

Binding object with Listlt;gt; to Crystal Report(用 Listlt;gt; 绑定对象到水晶报表)

问题描述

我有一个包含一些属性的类，其中一个是子对象的 List<>.

I have a class that contains a few properties including one that is a List<> of children objects.

简单示例:

    public class LineItem
    {
       public string Name { get; set; }
       public decimal Amount { get; set; }
    }

    public class Invoice
    {
       public string Name { get; set; }
       public DateTime CreatedDate { get; set; }
       public List<LineItem> LineItems { get; set; }
       public Invoice() { ... }
    }

我正在尝试将此对象(示例中的发票)绑定到 Crystal Report(使用 VS2008 水晶报表设计器)，当我在字段资源管理器中显示简单属性(名称、CreatedDate)时，子集合没有.我尝试使用 ArrayList (如建议( 如何使用强类型列表作为 Crystal Reports 的数据源 ) 但这不起作用.

I am trying to bind this object (Invoice in the example) to a Crystal Report (using VS2008 crystal report designer) and while I get the simple properties (Name, CreatedDate) to show up in Field Explorer the child collection does not. I have tried using an ArrayList (as suggested ( How can I use strongly typed lists as the datasoruce for a Crystal Reports ) but that did not work.

推荐答案

经过一番搜索和试验，我未能成功尝试将报表绑定到包含子集合的自定义对象.我没有使用 .Net 对象，而是使用 XSD shema 设计了报告，并在运行时生成了一个 xml 文件，并将成本报告的数据源设置为我使用 .ReadXML 方法构建的 DataSet.

After a bit of searching and experimenting I was unsuccessful in attempting to bind the report to a custom object that contained a child collection. Instead of using a .Net object I designed the report using a XSD shema and at runtime generated an xml file and set the cost report's datasource to a DataSet that I built using the .ReadXML method.

var exportData = new XDocument(....);
var dataSet = new System.Data.DataSet();
dataSet.ReadXml(exportData.CreateReader());

var report = new ReportDocument();
report.Load("...");
report.SetDataSource(data);

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