DataGridViewCellValueEventArgs Class
Provides data for the CellValueNeeded and CellValuePushed events of the DataGridView control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Handle the CellValueNeeded and CellValuePushed events to implement virtual mode in the DataGridView control. For more information about virtual mode, see Virtual Mode in the Windows Forms DataGridView Control.
For more information about handling events, see Consuming Events.
The following code example handles the CellValuePushed event to store updates and new entries in a data store object. This example is part of a larger example available in the DataGridView.VirtualMode reference topic.
#Region "data store maintance" Const initialValue As Integer = -1 Private Sub dataGridView1_CellValueNeeded(ByVal sender As Object, _ ByVal e As DataGridViewCellValueEventArgs) _ Handles dataGridView1.CellValueNeeded If store.ContainsKey(e.RowIndex) Then ' Use the store if the e value has been modified ' and stored. e.Value = store(e.RowIndex) ElseIf newRowNeeded AndAlso e.RowIndex = numberOfRows Then If dataGridView1.IsCurrentCellInEditMode Then e.Value = initialValue Else ' Show a blank value if the cursor is just resting ' on the last row. e.Value = String.Empty End If Else e.Value = e.RowIndex End If End Sub Private Sub dataGridView1_CellValuePushed(ByVal sender As Object, _ ByVal e As DataGridViewCellValueEventArgs) _ Handles dataGridView1.CellValuePushed store.Add(e.RowIndex, CInt(e.Value)) End Sub #End Region Dim store As System.Collections.Generic.Dictionary(Of Integer, Integer) = _ New Dictionary(Of Integer, Integer)
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.