ListSourceHelper.ContainsListCollection(IDataSource) 方法
定义
指示指定数据源控件是否包含数据源视图对象的集合。Indicates whether the specified data source control contains a collection of data source view objects.
public:
static bool ContainsListCollection(System::Web::UI::IDataSource ^ dataSource);
public static bool ContainsListCollection (System.Web.UI.IDataSource dataSource);
static member ContainsListCollection : System.Web.UI.IDataSource -> bool
Public Shared Function ContainsListCollection (dataSource As IDataSource) As Boolean
参数
- dataSource
- IDataSource
一个 IDataSource,指定数据源控件以测试关联数据源视图对象。An IDataSource that specifies the data source control to test for associated data source view objects.
返回
如果数据源控件包含数据源视图对象的集合,则为 true;否则为 false。true if the data source control contains a collection of data source view objects; otherwise, false.
示例
下面的代码示例演示了实现方法的数据源类的设计模式 IListSource 。The following code example demonstrates the design pattern for a data source class that implements the IListSource methods. ContainsListCollection属性调用静态 ContainsListCollection 方法。The ContainsListCollection property calls the static ContainsListCollection method.
#region Implementation of IListSource
bool IListSource.ContainsListCollection {
get {
return ListSourceHelper.ContainsListCollection(this);
}
}
IList IListSource.GetList() {
return ListSourceHelper.GetList(this);
}
#endregion
#Region "Implementation of IListSource"
ReadOnly Property ContainsListCollection() As Boolean Implements IListSource.ContainsListCollection
Get
Return ListSourceHelper.ContainsListCollection(Me)
End Get
End Property
Function GetList() As IList Implements IListSource.GetList
Return ListSourceHelper.GetList(Me)
End Function 'IListSource.GetList
#End Region
注解
在属性的实现中使用此方法 ContainsListCollection ,将引用传递到数据源控件。Use this method in an implementation of the ContainsListCollection property, passing a reference to a data source control.