IFilterConsumer.ClearFilter 方法
请注意：此 API 现在已过时。
用来响应请求清除从ClearFilter事件提供程序 Web 部件的筛选器。
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 ClearFilter ( _
sender As Object, _
e As EventArgs _
)
用法
Dim instance As IFilterConsumer
Dim sender As Object
Dim e As EventArgs
instance.ClearFilter(sender, e)
[ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartParameters instead")]
void ClearFilter(
Object sender,
EventArgs e
)
参数
sender
类型：System.Object对在提供程序 Web 部件上实现接口的对象的引用。
e
类型：System.EventArgs从 ClearFilter 事件传递事件参数。这将是一个 NULL 对象。
示例
下面的代码示例显示将触发ClearFilter事件PartCommunicationMain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 #10: Implement ClearFilter event handler.
' The connected provider part will call this method during its
' PartCommunicationMain phase to remove the filter on the
' consumer Web Part.
' <param name="sender">Provider Web Part</param>
' <param name="eventArgs">The Event Arguments</param>
Public Sub ClearFilter(sender As Object, eventArgs As EventArgs) Implements IFilterConsumer.ClearFilter
' Ensure that all of the Web Part's controls are created.
EnsureChildControls()
' Clear the filter on the DataTable.
_rowFilterExpression = String.Empty
' Clear out the cached row filter expression.
_cachedRowFilter.Text = String.Empty
End Sub
// Step #10: Implement ClearFilter event handler.
// The connected provider part will call this method during its
// PartCommunicationMain phase
// to remove the filter on the consumer Web Part.
// <param name="sender">Provider Web Part</param>
// <param name="eventArgs">The Event Arguments</param>
public void ClearFilter(object sender, EventArgs eventArgs)
{
// Ensure that all of the Web Part's controls are created.
EnsureChildControls();
// Clear the filter on the DataTable.
_rowFilterExpression = string.Empty;
// Clear out the cached row filter expression.
_cachedRowFilter.Text = string.Empty;
}