CalcNodeDragImageIndexEventArgs.ImageIndex Property

Gets or sets the index of the image to be displayed in front of nodes when dragging.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v19.2.dll

Declaration

C#

public int ImageIndex { get; set; }

VB.NET

Public Property ImageIndex As Integer

Property Value

Type	Description
Int32	An integer value representing the zero-based index of the desired image within the TreeList.Painter.NodeDragImages collection.

Remarks

Initially, the source image list contains only three standard images with 0, 1 and 2 indices. However, you can modify the collection to add custom images to it. If you do this use the added image’s index instead, to display it in front of nodes when dragging.

The source image list can be accessed via the TreeList.Painter.NodeDragImages property.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the ImageIndex property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-use-treelist-for-file-management-drag-and-drop-files-and-folders-e3400/CS/FileList/FileListHelper.cs#L166

{
    e.ImageIndex = 0;
}

how-to-reorder-xtratreelist-nodes-via-drag-and-drop-e866/CS/Form1.cs#L125

if(GetDragDropEffect(tl, tl.FocusedNode) == DragDropEffects.None)
    e.ImageIndex = -1;  // no icon
else

VB.NET

how-to-use-treelist-for-file-management-drag-and-drop-files-and-folders-e3400/VB/FileList/FileListHelper.vb#L152

If e.Node(treeListColumn3).ToString() = "Folder" Then
    e.ImageIndex = 0
End If

how-to-reorder-xtratreelist-nodes-via-drag-and-drop-e866/VB/Form1.vb#L122

If GetDragDropEffect(tl, tl.FocusedNode) = DragDropEffects.None Then
    e.ImageIndex = -1 ' no icon
Else