Hi Scott ,
We have checked your reported problem that TreeView nodes are not automatically selected in NodeDragged event. We would like to let you know that the dragged node will not be selected automatically. As it will remove the selection from the already selected node.
We have checked your attached solution for getting node details without selecting the node while dragging. In this case, you can fetch the nodeDetails by passing the dragged node id to the getTreeData() method.
|
if ( value == null)
{
var NodeDetails = await this.tree.GetTreeData(args.DraggedNodeData.Id);
}
else
{
var NodeDetails = await this.tree.GetTreeData(value);
} |
When you drag a node while another node is in selected state, your attached (above) solution might not work properly. To resolve this problem, you need to check the dragged node does not contain the “e-active” class. Because, we have added the “e-active” for selected nodes in TreeView component. Refer the below code snippet.
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public async Task drag(DragAndDropEventArgs args)
{
var value = this.tree.SelectedNodes;
// Get the dragged node ClassList.
var dragNodeClass = await args.DraggedNode.GetClassList();
// If the classlist contain e-active class, it means the node is in selected state
foreach (string s in dragNodeClass)
{
if(s =="e-active")
{
count = 1;
}
}
// Check the dragged node is not in the selected state
if ( value == null || count == 0)
{
// Fetch the dragagedNode details.
var NodeDetails = await this.tree.GetTreeData(args.DraggedNodeData.Id);
}
else
{
var NodeDetails = await this.tree.GetTreeData(value);
count = 0;
} } |
For your reference, we have prepared a sample.
Please let us know, if you need any further assistance.
Regards,
Sowmiya.P
