TopBottomNSortField 类

使您可以获取和设置 TopN 和 BottomN 排序字段的选项。

有关该类型所有成员的列表，参见 TopBottomNSortField 成员。

System.Object
   CrystalDecisions.CrystalReports.Engine.EngineObjectBase
      CrystalDecisions.CrystalReports.Engine.SortField
         TopBottomNSortField

[Visual Basic]

Public Class TopBottomNSortField
Inherits SortField
Implements IDisposable

[C#]

public class TopBottomNSortField : SortField, IDisposable

备注

通过 SortFields 集合的 Item 属性，按索引检索 SortField 对象，并将 SortField 对象转换为 TopBottomNSortField 对象。

示例

下面示例返回 TopBottomNSortField 对象。

  
[VJ#]
      private TopBottomNSortField getTopBottomNSortField
         (int sortFieldIndex)
      {
         TopBottomNSortField topBottomNSortField = null;
      
         try
         {
            topBottomNSortField = (TopBottomNSortField)Report.get_DataDefinition()
               .get_SortFields().get_Item(sortFieldIndex);
         }
         catch (Exception e)
         {
         }
         return topBottomNSortField;
      }
      

  
[Visual Basic]
      Private Function GetTopBottomNSortField _
         (ByVal sortFieldIndex As Integer) As TopBottomNSortField
      
         Dim topBottomNSortField As TopBottomNSortField
      
         If TypeOf _
         (Report.DataDefinition.SortFields.Item(sortFieldIndex)) _
            Is TopBottomNSortField Then
            topBottomNSortField = _
               Report.DataDefinition.SortFields.Item(sortFieldIndex)
            GetTopBottomNSortField = topBottomNSortField
         Else : GetTopBottomNSortField = Nothing
         End If
      End Function 
      

  
[C#]
      private TopBottomNSortField GetTopBottomNSortField
         (int sortFieldIndex)
      {
         TopBottomNSortField topBottomNSortField;
      
         topBottomNSortField =
            Report.DataDefinition.SortFields[sortFieldIndex]
            as TopBottomNSortField;
         if (topBottomNSortField != null) return topBottomNSortField;
         else return null;
      }
      

要求

命名空间 CrystalDecisions.CrystalReports.Engine

程序集 CrystalDecisions.CrystalReports.Engine (CrystalDecisions.CrystalReports.Engine.dll)

请参见

TopBottomNSortField 成员 | CrystalDecisions.CrystalReports.Engine 命名空间

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