QueryItemCountEventArgs Class

Provides information on the DataGridVirtualizingCollectionView to which the grid is bound including the number of items that it should contain.

Syntax

Visual Basic
C#

'Declaration
 
Public Class QueryItemCountEventArgs 

   Inherits AsyncQueryEventArgs

'Usage
 
Dim instance As QueryItemCountEventArgs

public class QueryItemCountEventArgs : AsyncQueryEventArgs

Remarks

Data virtualization requires that certain "query" events be handled in order for prerequisite information and new items to be provided when necessary. Through the QueryItemCount event, which is raised every time the grid is loaded or refreshed or its state changes (e.g., new sorting or filtering criteria are applied), the total number of records in the underlying data source must be provided, taking into account any filters that are currently applied to the items.

Inheritance Hierarchy

System.Object
   System.EventArgs
      Xceed.Wpf.DataGrid.AsyncQueryEventArgs
         Xceed.Wpf.DataGrid.QueryItemCountEventArgs

Requirements

Target Platforms: Windows 11, Windows 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

QueryItemCountEventArgs Members
Xceed.Wpf.DataGrid Namespace