Crystal Reports使用Report和SubReport

时间:2012-04-02 01:27:14

标签: c# visual-studio-2010 crystal-reports

假设我有以下内容:

public class MyObject
{
   public string Name {get; set;}
   public List<MySubObject> SubObjects {get; set;}
}

public class MySubObject
{
   public string SubName {get; set;}
}

我是否可以设置报告和子报告以显示MyObjects列表(每个列表都包含各自MySubObjects的子报告列表?

1 个答案:

答案 0 :(得分:1)

我认为您的班级定义缺少List<MySubObject>的名称:

public class MyObject
{
   public string Name {get; set;}
   public List<MySubObject> SubObjects {get; set;}
}

public class MySubObject
{
   public string SubName {get; set;}
}

您可以遍历并填充数据集(您实际上不需要使用子报表,您的数据比上面描述的更复杂):

DataSet ds = new DataSet();
DataTable dt = new DataTable();
dt.Columns.Add("Name");
dt.Columns.Add("SubReport");
foreach (MyObject myo in list_of_myobjects)
{
 foreach (MySubObject myso in myo.SubObjects)
 {
  DataRow dr = dt.NewRow();
  dr[0] = myo.Name;
  dr[1] = myso.SubName;
  dt.Rows.Add();
  ds.Tables.Add(dt);
 }
}

然后将晶体报告数据源指向数据集:

using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Shared;
CrystalReport1 objRpt = new CrystalReport1();
objRpt.SetDataSource(ds.Tables[1]);
crystalReportViewer1.ReportSource = objRpt;
crystalReportViewer1.Refresh();