WinExplorerView.ContextButtonClick Event

Occurs when a context button in this WinExplorerView is clicked.

Namespace: DevExpress.XtraGrid.Views.WinExplorer

Assembly: DevExpress.XtraGrid.v24.1.dll

NuGet Packages: DevExpress.Win.Grid, DevExpress.Win.Navigation

Declaration

C#

[DXCategory("Context Buttons")]
public event ContextItemClickEventHandler ContextButtonClick

VB.NET

<DXCategory("Context Buttons")>
Public Event ContextButtonClick As ContextItemClickEventHandler

Event Data

The ContextButtonClick event's data class is ContextItemClickEventArgs. The following properties provide information specific to this event:

Property	Description
DataItem	Gets or sets an Object that contains a clicked ContextItem. This object is a control or a control’s item.
Item	Gets a clicked ContextItem.
ItemInfo	Gets or sets a clicked ContextItem‘s ContextItemViewInfo.
ScreenBounds	Returns a Rectangle that contains a ContextItem.

Remarks

Handling the ContextButtonClick event allows you to respond to an end-user clicking a context button stored within the WinExplorerView.ContextButtons collection. See the Context Buttons section of the WinExplorer View to learn more.

Example

If the ShowCheckBoxes option is enabled, the view displays check boxes in each record (row). The CheckBoxColumn property specifies the data field (column) that contains values for the check boxes. The code below shows how to use context check buttons instead of check boxes in the view.

C#

using DevExpress.Utils;
using DevExpress.XtraGrid.Views.WinExplorer;
using DevExpress.XtraGrid.Views.Base;

winExplorerView1.OptionsView.ShowCheckBoxes = false;

private void winExplorerView1_ContextButtonClick(object sender, ContextItemClickEventArgs e) {
    WinExplorerView view = sender as WinExplorerView;
    if (e.Item.Name == "itemCheck") {
        view.SetRowCellValue((int)e.DataItem, view.ColumnSet.CheckBoxColumn, ((CheckContextButton)e.Item).Checked);
    }
}

private void winExplorerView1_ContextButtonCustomize(object sender, WinExplorerViewContextButtonCustomizeEventArgs e) {
    WinExplorerView view = sender as WinExplorerView;
    if (e.Item.Name == "itemCheck") {
        ((CheckContextButton)(e.Item)).Checked = Convert.ToBoolean(view.GetRowCellValue(e.RowHandle, view.ColumnSet.CheckBoxColumn));
    }
}

private void winExplorerView1_CellValueChanged(object sender, CellValueChangedEventArgs e) {
    WinExplorerView view = sender as WinExplorerView;
    if (e.Column == view.ColumnSet.CheckBoxColumn) {
        view.RefreshContextButtons();
    }
}

VB.NET

Imports DevExpress.Utils
Imports DevExpress.XtraGrid.Views.WinExplorer
Imports DevExpress.XtraGrid.Views.Base

winExplorerView1.OptionsView.ShowCheckBoxes = False

Private Sub winExplorerView1_ContextButtonClick(ByVal sender As Object, ByVal e As ContextItemClickEventArgs) _
    Handles winExplorerView1.ContextButtonClick
    Dim view As WinExplorerView = TryCast(sender, WinExplorerView)
    If e.Item.Name = "itemCheck" Then
        view.SetRowCellValue(DirectCast(e.DataItem, Integer), view.ColumnSet.CheckBoxColumn, CType(e.Item, CheckContextButton).Checked)
    End If
End Sub

Private Sub winExplorerView1_ContextButtonCustomize(ByVal sender As Object, ByVal e As WinExplorerViewContextButtonCustomizeEventArgs) _
    Handles winExplorerView1.ContextButtonCustomize

    Dim view As WinExplorerView = TryCast(sender, WinExplorerView)
    If e.Item.Name = "itemCheck" Then
        CType(e.Item, CheckContextButton).Checked = Convert.ToBoolean(view.GetRowCellValue(e.RowHandle, view.ColumnSet.CheckBoxColumn))
    End If
End Sub

Private Sub winExplorerView1_CellValueChanged(ByVal sender As Object, ByVal e As CellValueChangedEventArgs) _
    Handles winExplorerView1.CellValueChanged
    Dim view As WinExplorerView = TryCast(sender, WinExplorerView)
    If e.Column Is view.ColumnSet.CheckBoxColumn Then
        view.RefreshContextButtons()
    End If
End Sub