TreeView Control uses GET instead of POST on HTTPs Pages

[KI performance]

Hello there,

i am using RADtreeview within my User Control (*.ascx). I also configured it to get its nodes from a webservice. So far so good, all is working fine as long as i open the Page with "http://". I see the Control is sending its request with POST to my WebService and gets all needed information to populate the Tree.

But as soon as i switch to "https://" the Control is asking the WebService with GET instead of POST. How to configure it to always send POST?

UseHttpGet="false" doens't change anything. Also my WebService only have a POST OperationContract.

WebService Contract:

[OperationContract]
[WebInvoke(Method = "POST", BodyStyle = WebMessageBodyStyle.WrappedRequest, RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
RadTreeNodeData[] GetNodes(RadTreeNodeData node, IDictionary<string, object> context);

User Control (*.ascx):

<telerik:RadTreeView
    ID="RadTreeView1"
    runat="server"
    Width="100%"
    PersistLoadOnDemandNodes=   "false"
    EnableViewState         =   "false"
    LoadingStatusPosition   =   "AfterNodeText"

    >
    <ExpandAnimation Type="none"></ExpandAnimation>
    <CollapseAnimation Type="none"></CollapseAnimation>
    <WebServiceSettings Path="http://localhost/_vti_bin/xxxx.xxxx.xxxx/myTopBarNavigation.svc" Method="GetNodes" UseHttpGet="false"></WebServiceSettings>
    <Nodes>
        <telerik:RadTreeNode Text="Root Node" ExpandMode="WebService">
        </telerik:RadTreeNode>
    </Nodes>
</telerik:RadTreeView>

[Hristo Valyavicharski]

Hi Sascha,

By default the UseHttpGet property is false and the tree makes POST requests. What Telerik version do you have? Please attach Fiddler log.

Regards,
Hristo Valyavicharski
Telerik