private void treeAccounts_BeforeDropNode(object sender, DevExpress.XtraTreeList.BeforeDropNodeEventArgs e)
{
var dest = treeAccounts.GetDataRecordByNode(e.DestinationNode);
if (dest is AccountNode node && node.Type != AccountType.Group)
{
e.Cancel = true;
}
}
//节点拖动结束前
private void treeList1_BeforeDropNode(object sender, DevExpress.XtraTreeList.BeforeDropNodeEventArgs e)
{
if (e.SourceNode.Level - e.DestinationNode.Level != 1)
{
e.Cancel = true;
}
List <ProjectTreeNode> tree = treeList1.DataSource as List <ProjectTreeNode>;
if (tree[e.SourceNode.Id] is ProjectTreeLeafNode && e.DestinationNode.Level == 3)
{
e.Cancel = false;
}
}
