[CLOSED] Drag Drop problem in TreeGrid

[legaldiscovery]

Below is ma code..My onRemoteMove is activated.When the page is first time loaded and without expanding any of the Parent node,I drap drop Parent node to parent node(Node_1 To Node_2),the parent node being draged disappers.

When i expand the target node and then dragdrop the parent to parent it does not disappears..it works fine

<ext:TreeGrid ID="trptags" runat="server" Title="Family" Width="500" Height="300" Icon="Folder"
                Region="Center" EnableDD="true" 
                 Mode="Remote" OnRemoteMove="RemoteMove" AllowLeafDrop="true">
                <Columns>
                    <ext:TreeGridColumn Header="Tag Name" Width="330" DataIndex="tagname" />
                    <ext:TreeGridColumn Header="Leaf Node" Width="100" DataIndex="ishidden" />
                    <ext:TreeGridColumn Header="Created On" Width="100" DataIndex="createdDate" />
                </Columns>
                <Loader>
                    <ext:PageTreeLoader OnNodeLoad="BindTagTree">
                    </ext:PageTreeLoader>
                </Loader>
                <Editors>
                    <ext:TreeEditor ID="TreeEditor1" runat="server" CancelOnBlur="true">
                        <Field>
                            <ext:TextField ID="TextField1" runat="server" />
                        </Field>
                    </ext:TreeEditor>
                </Editors>
               
               
            </ext:TreeGrid>

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then
            ResourceManager1.RegisterIcon(Ext.Net.Icon.Folder)
            ResourceManager1.RegisterIcon(Ext.Net.Icon.TagYellow)

            Dim realRoot As New Ext.Net.TreeNode()
            realRoot.NodeID = "Root0"
            realRoot.Expanded = True
            Dim treeNode As New Ext.Net.AsyncTreeNode()
            treeNode.Leaf = False
            treeNode.Icon = Icon.Folder
            treeNode.Expanded = True
            treeNode.NodeID = "0_Parent"
            treeNode.CustomAttributes.Add(New ConfigItem("tagname", "Root", ParameterMode.Value))
            realRoot.Nodes.Add(treeNode)
            trptags.Root.Add(realRoot)

        End If
    End Sub


    Public Sub BindTagTree(ByVal sender As Object, ByVal e As NodeLoadEventArgs)
        Dim tndCollection As New Ext.Net.TreeNodeCollection
        For i As Integer = 1 To 2
            Dim oNode As New Ext.Net.TreeNode
            oNode.NodeID = "Node_" & i
            oNode.Text = "Node_" & i
            oNode.CustomAttributes.Add(New Ext.Net.ConfigItem("tagname", oNode.Text, ParameterMode.Value))
            oNode.CustomAttributes.Add(New Ext.Net.ConfigItem("createdDate", Date.Now.ToString, ParameterMode.Value))
            oNode.Icon = Icon.Folder
            oNode.Nodes.AddRange(getTagNode1(i))
            tndCollection.Add(oNode)
        Next
        e.Nodes.AddRange(tndCollection)
    End Sub


    Private Function getTagNode1(ByVal ParentID As String) As Ext.Net.TreeNodeCollection
        Try
            Dim tndCollection As New Ext.Net.TreeNodeCollection
            For i As Integer = 1 To 2
                Dim oNode As New Ext.Net.TreeNode
                oNode.NodeID = "Leaf_" & i
                oNode.Text = "Leaf_" & i
                oNode.CustomAttributes.Add(New Ext.Net.ConfigItem("tagname", "Leaf_" & i, ParameterMode.Value))
                oNode.CustomAttributes.Add(New Ext.Net.ConfigItem("ishidden", "True", ParameterMode.Value))
                oNode.CustomAttributes.Add(New Ext.Net.ConfigItem("createdDate", Date.Now.ToString, ParameterMode.Value))
                If i = 1 Then
                    oNode.Icon = Icon.TagYellow
                    oNode.Leaf = True
                Else
                    oNode.Icon = Icon.Folder
                    oNode.Leaf = True
                    oNode.Listeners.Expand.Handler = "return false;"
                End If
                tndCollection.Add(oNode)
            Next
            Return tndCollection
        Catch ex As Exception
            LogError(ex, strPageName & "->getTagNode() ")
        End Try
    End Function

    Protected Sub RemoteMove(ByVal sender As Object, ByVal e As RemoteMoveEventArgs)
        e.Accept = True
    End Sub

Thanx in advance

[Vladimir]

Well, you use Loader to retrieve children therefore on first expand a node will request children

I can suggest
- set ClearOnLoad=false for Loader

- or use TreeNode (instead AsyncTreeNode) and set EnforceNodeType=true for the node which should not use loader

[legaldiscovery]

I tried the solution given by you,But unfortunately it dint worked
I tried setting loader property ClearOnLoad=false but dint worked

I tried setting the property of node t EnforceNodeType=true but then its child nodes are not seen

And as told by you to use Tree node instead of AsyncTreeNode..I even tried that for the root node in page load,But then No nodes are created under it

[Daniil]

Really, ClearOnLoad="false" doesn't help when Mode="Remote" is set up for the TreeGrid.

We will look how it can be resolved and notice you.

[Daniil]

I tried setting the property of node t EnforceNodeType=true but then its child nodes are not seen

Please also set PreloadChildren="true" for the PageTreeLoader.