IFilterConsumer.NoFilter 方法
请注意：此 API 现在已过时。
用于响应一条消息，将从提供程序 Web 部件的NoFilter事件提供任何筛选器。
命名空间： Microsoft.SharePoint.WebPartPages.Communication
程序集： Microsoft.SharePoint（位于 Microsoft.SharePoint.dll 中）
语法
声明
<ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartParameters instead")> _
Sub NoFilter ( _
sender As Object, _
e As EventArgs _
)
用法
Dim instance As IFilterConsumer
Dim sender As Object
Dim e As EventArgs
instance.NoFilter(sender, e)
[ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartParameters instead")]
void NoFilter(
Object sender,
EventArgs e
)
参数
sender
类型：System.Object对在提供程序 Web 部件实现 IFilterProvider 接口的对象的引用。
e
类型：System.EventArgs从 NoFilter Event传递事件参数。这将 null 对象。
示例
下面的代码示例显示NoFilter方法的实现。此代码示例是示例的一个更大提供的IFilterConsumer接口的一部分。
' Step #11: Implement NoFilter event handler.
' The connected provider part will call this method during its
' PartCommunicationMain phase to indicate there is no change in the
' filter. This allows the consumer part to
' display its cached data instead of recalculating the filter
' expression or potentially hitting a database again.
' <param name="sender">Provider Web Part</param>
' <param name="eventArgs">The Event Arguments</param>
Public Sub NoFilter(sender As Object, eventArgs As EventArgs) Implements IFilterConsumer.NoFilter
' Ensure that all of the Web Part's controls are created.
EnsureChildControls()
' No change in the filter so use cached _cachedRowFilter.
_rowFilterExpression = _cachedRowFilter.Text
End Sub
// Step #11: Implement NoFilter event handler.
// The connected provider part will call this method during its
// PartCommunicationMain phase
// to indicate there is no change in the filter. This allows the
// consumer part to display its cached data instead of recalculating
// the filter expression or potentially hitting a database again.
// <param name="sender">Provider Web Part</param>
// <param name="eventArgs">The Event Argumentsr</param>
public void NoFilter(object sender, EventArgs eventArgs)
{
// Ensure that all of the Web Part's controls are created.
EnsureChildControls();
// No change in the filter so use cached _cachedRowFilter.
_rowFilterExpression = _cachedRowFilter.Text;
}