TreeViewControl.ClipboardNodeCopying Event

Occurs before a user copies a node to the clipboard. Allows you to apply a format, change the copied data, or skip a node.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v21.2.dll

NuGet Package: DevExpress.Wpf.Grid.Core

Declaration

C#

public event EventHandler<ClipboardRowCopyingEventArgs> ClipboardNodeCopying

VB.NET

Public Event ClipboardNodeCopying As EventHandler(Of ClipboardRowCopyingEventArgs)

Event Data

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

Property	Description
Cancel	Gets or sets whether to cancel the copy operation.
Headers	Gets a collection of column headers or band headers.
RowHandle
Type	Gets the processed object’s type (row, column header, band header, group, group summary).
Values	Gets a collection of row or group row values.

Remarks

The code sample below changes the appearance of nodes.

XAML

<dxg:TreeViewControl x:Name="treeview"
                     SelectionMode="Row"
                     ClipboardCopyOptions="All"
                     ClipboardMode="Formatted"
                     ClipboardNodeCopying="treeview_ClipboardNodeCopying"
                     ... />

C#

private void treeview_ClipboardNodeCopying(object sender, DevExpress.Xpf.Grid.ClipboardRowCopyingEventArgs e) {
    if (e.Type == DevExpress.XtraExport.Helpers.ClipboardInfoType.Row)
        foreach (var value in e.Values) {
            value.BackColor = System.Drawing.Color.Gray;
            value.ForeColor = System.Drawing.Color.White;
            for (int i = 0; i < treeview.GetNodeByValue(value.OriginalValue).Level; i++) {
                value.Value = "   " + value.DisplayValue;
            }
        }
}

VB.NET

Private Sub treeview_ClipboardNodeCopying(ByVal sender As Object, ByVal e As DevExpress.Xpf.Grid.ClipboardRowCopyingEventArgs)
    If e.Type = DevExpress.XtraExport.Helpers.ClipboardInfoType.Row Then

        For Each value In e.Values
            value.BackColor = System.Drawing.Color.Gray
            value.ForeColor = System.Drawing.Color.White

            For i As Integer = 0 To treeview.GetNodeByValue(value.OriginalValue).Level - 1
                value.Value = "   " & value.DisplayValue
            Next
        Next
    End If
End Sub

For information on how to copy TreeViewControl data to the clipboard, refer to the following DevExpress WPF Grid help topic: Clipboard Management.