c# – 如何将两个类合并为一个单元？

List<ReportDataInfo> Lrdi = new List<ReportDataInfo>();
ReportDataInfo rdi = new ReportDataInfo();
ReportDataInfo RdiMerge=new ReportDataInfo();
string[] AccountTypeCodeCustomArray = 
AccountCodeTypeCustom.Split(",".ToCharArray());
string[] SubTypeCodeCustomArray = 
SubAccountTypeCodeCustom.Split(",".ToCharArray());
string[] AccountCodeCustomArray = AccountCodeCustom.Split(",".ToCharArray());
for (int i = 0; i < AccountCodeTypeCustom.Length; i++)
{
    rdi = ExportDataToCSV.GetLedgerReportData(Globals.GetInt( 
     AccountTypeCodeCustomArray[i],0),Globals.GetInt( 
     SubTypeCodeCustomArray[i],Globals.GetInt( AccountCodeCustomArray[i],this.CurrentSessionInfo.Company.CompanyCode,this.CurrentSessionInfo.FinancialYear.StartDate,this.CurrentSessionInfo.FinancialYear.EndDate);
   // Lrdi.Add(rdi);
    RdiMerge.Rows.Concat(rdi.Rows);                        
    //RdiMerge.ReportHeading = rdi.ReportHeading;
    //RdiMerge.Rows = rdi.Rows;
}

CurrentSessionInfo.ReportData = RdiMerge;

这是我以前尝试过的事情

现在我的问题是
我希望从ExportDataToCSV.GetLedgerReportData()返回合并返回的ReportDataInfo;

无论从ExportDataToCSV.GetLedgerReportData()返回什么值,我都被困在这里;
我想合并到单个ReportDataInfo然后传递给CurrentSessionInfo.ReportData = RdiMerge;

ReportDataInfolooks之类的

[Serializable]
public class ReportDataInfo
{
    public string ReportHeading { get; set; }
    public List<ReportColumnInfo> Rows { get; set; }
}