RAD Treeview Issue with unchecked node

[Asok]

Hello,

I am using Telerik RadTreeview with checkboxes. I am saving the checked node ids to database. The scenario is when I select a particular dropdown I am making the checkboxes on the treeview selected based on the ids I get from the database. The issue revolves when I deselect a node and then on saving the Rad treeview it is still showing the checkbox as selected on the server side.

Please advise!

Thank you,
Asok

[Ivana]

Hello Asok,

Can you paste here the troubled code? Or, send a sample project via a support ticket?

Greetings,
Ivana
the Telerik team

[Asok]

Hello Ivana,

Thank you for your response. The below is the code I am using.

AXPX:

<script type="text/javascript" language="javascript">
        function UpdateAllChildren(nodes, checked) {
            var i;
            var test;
            for (i = 0; i < nodes.get_count(); i++) {
                if (checked) {
                    nodes.getNode(i).check();
                }
                else {
                    nodes.getNode(i).set_checked(false);
                }


                if (nodes.getNode(i).get_nodes().get_count() > 0) {
                    UpdateAllChildren(nodes.getNode(i).get_nodes(), checked);
                }
            }
        }
        function clientNodeChecked(sender, eventArgs) {
            var childNodes = eventArgs.get_node().get_nodes();
            var isChecked = eventArgs.get_node().get_checked();
            UpdateAllChildren(childNodes, isChecked);
        }
 </script>

 <telerik:RadTreeView ID="permissionTreeView" runat="server" 
                        EnableDragAndDrop="false" EnableDragAndDropBetweenNodes="false"
                        Skin="Office2007" AllowNodeEditing="false" CheckBoxes="true" 
                        OnClientNodeChecked="clientNodeChecked" CheckChildNodes="true">                        
                    </telerik:RadTreeView>


C#

foreach( RadTreeNode node in permissionTreeView.CheckedNodes ) {
                    if( node.Checked ) {


                        if( node.Value.StartsWith( "f_" ) ) {
                            if( !rightsNodes.Contains( node.Value ) ) {
                                _nodeIDs = _nodeIDs + node.Value.Replace( "f_", "" ) + ",";
                                rightsNodes.Add( node.Value );


                                if( node.Level != 0 ) {
                                    if( !parentNodes.Contains( node.ParentNode.Value ) ) {
                                        _parentNodeIDs = _parentNodeIDs + node.ParentNode.Value + ",";
                                        parentNodes.Add( node.ParentNode.Value );
                                    }
                                }
                            }
                        }
                        else {
                            if( !parentNodes.Contains( node.Value ) ) {
                                _parentNodeIDs = _parentNodeIDs + node.Value + ",";
                                parentNodes.Add( node.Value );
                            }                            
                        }                        
                    }
                }

During the load I am populating the treeview and make some of the nodes checked based on the database values. When I unchecked a treeview node(using client side) , I am still getting it as checked in the checkdnodes collection list.

Please advise!

Thank you,
Asok

[Princy]

Hi Asok,

I was able to replicate the issue. I resolved that by Checking condition for postback in the pageload as follows. Please provide your full code if the issue persists.

C#:

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
           // Your Code
        }
    }

Thanks,
Princy.

[Asok]

Hello Princy,

Thank you for your quick response. However it did not resolve my issue. To be more specific about my issue please see the below details.

I want the checked nodeids that are checked on button save click. There are 2 drop downs used in the page. One is for role and other for users. When admin selects role, the users assigned with the roles get populated. On selecting a user drop down the permissions assigned to the selected user will be populated on the Treeview with nodeids checked. Now admin need to uncheck some and check few more, but in the checked node collection list I am getting the nodeids checked even when I deselected them.

Thank you,
Asok

[Shinu]

Hi Asok,

Unfortunately I couldn't replicate the issue. Here is the code that I tried based on your scenario which works as expected at my end.

ASPX:

<telerik:RadComboBox ID="cmbUsers" runat="server" AutoPostBack="true" onselectedindexchanged="cmbUsers_SelectedIndexChanged">
 <Items>
   .........
 </Items>
</telerik:RadComboBox>
<telerik:RadTreeView ID="permissionTreeView" runat="server"
         EnableDragAndDrop="false" EnableDragAndDropBetweenNodes="false"
         Skin="Office2007" AllowNodeEditing="false" CheckBoxes="true"
         OnClientNodeChecked="clientNodeChecked" CheckChildNodes="true">
</telerik:RadTreeView>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" />

C#:

protected void Button1_Click(object sender, EventArgs e)
    {
        foreach (RadTreeNode node in permissionTreeView.CheckedNodes)
        {
            if (node.Checked)
            {
                // Your Code
            }
        }
    }

protected void cmbUsers_SelectedIndexChanged(object sender, RadComboBoxSelectedIndexChangedEventArgs e)
    {
        SqlDataAdapter adapter = new SqlDataAdapter("SELECT id,name,parent FROM tree",
                    ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString);
        DataSet permissions = new DataSet();
        adapter.Fill(permissions);
        permissionTreeView.DataTextField = "name";
        permissionTreeView.DataFieldID = "id";
        permissionTreeView.DataValueField = "id";
        permissionTreeView.DataFieldParentID = "parent";

        permissionTreeView.DataSource = permissions;
        permissionTreeView.DataBind();
        string state = values; // Get Saved Values From Database
        string[] arrPermissions;
        arrPermissions = state.Split(',');
        foreach (string Permission in arrPermissions)
        {
            // Your Code
        }
    }

Hope this helps.

Thanks,
Shinu

[Asok]

Hello Shinu/Princy,

Thank you for guiding me to the right solution. I used TreeNodeExpandMode.ServerSideCallBack to expand the child nodes. The problem still persists when I use the above. I changed it to TreeNodeExpandMode.ClientSide for the node expand mode and it works fine.

Kindest Regards,
Asok

[Hana]

Hi

I want the full solution of this problem for my project, because I can not solve it.

Please send to me your solution in my email.

[e-mail]

[Ivan Danchev]

Hello Hana,

Please open a support ticket and attach a runnable sample reproducing the issue you are having. You can follow our guidelines for isolating the issue.

Regards,
Ivan Danchev
Telerik