Add ClientSideEvents dynamically to an existent control.

[Juan Acosta]

Hi, 

I want to now if it possible to add dynamic ClientSideEvents. 

I have a set of controls inside a partial view something like this:

 <div class="col-lg-3 col-md-6">

    <span class="txt">Select The group To be assigned </span>

    <div style="display: inline-block;">

        @Html.EJ().TreeView("tree").TreeViewFields(s => s.Datasource((IEnumerable<Models.Visual.VisualGroup>)ViewBag.groupsSource)

                .Id("id").ParentId("parentId").Text("name").HasChild("hasChild")).ShowCheckbox(true).EnablePersistence(true).EnableRTL(true).LoadOnDemand(true).ClientSideEvents(e => e.NodeCheck("onItemSelectGroups")).ClientSideEvents(e => e.NodeUncheck("onItemSelectGroups"))

    </div>

</div>

<div class="col-lg-3 col-md-6">

    <span class="txt">and/or the specific Individual.</span>

    @Html.EJ().TreeView("tree2").TreeViewFields(s => s.Datasource((IEnumerable<Models.Visual.VisualGroup>)ViewBag.groupsIndividualSource)

                .Id("id").ParentId("parentId").Text("name").HasChild("hasChild")).ShowCheckbox(true).EnablePersistence(true).EnableRTL(true).LoadOnDemand(true).ClientSideEvents(e => e.NodeCheck("onItemSelectGroups")).ClientSideEvents(e => e.NodeUncheck("onItemSelectGroups"))

</div>

I want to reuse that control several times in different screens. However, the method onItemSelectGroups is burned to the control.

<script type="text/javascript">

function onItemSelectGroups(args) {

    console.log('onItemSelectGroups ' + args);

    //do something

}

</script>

I want to add that method dynamically using javascript. 

So, I will have the partial view with the simple declaration of the object

 @Html.EJ().TreeView("tree").TreeViewFields(s => s.Datasource((IEnumerable<Models.Visual.VisualGroup>)ViewBag.groupsSource)

                .Id("id").ParentId("parentId").Text("name").HasChild("hasChild")).ShowCheckbox(true).EnablePersistence(true).EnableRTL(true).LoadOnDemand(true)

So, I can customise specific behaviours per screen that have that partial included.

Could you please tell me how to create a function to recover the control and dynamically assign the events NodeUncheck and NodeCheck on demand to a specific javascript functions.

Kind regards, 

Juan Acosta

[Ashokkumar Balasubramanian]

Hi Juan, 

 

Thank you for contacting syncfusion support. 

 

We have analyzed requirement (dynamically add ClientSideEvents for treeview control) and code snippet. We can dynamically add any property and events using option method.    

 

Please refer the below code snippet: 

 

[JAVASCRIPT] 

   function screen1Check(args){ 

        console.log("Screen1 Element Checked"); 

    } 

    function screen1UnCheck(args) { 

        console.log("Screen1 Element UnChecked"); 

    } 

   var treeObj = $("#tree").ejTreeView("instance"); 

   treeObj.option({ "nodeCheck": “screen1Check”, "nodeUncheck": “screen1UnCheck” }); 

 

To know more about the api configuration, please refer the below link. 

https://help.syncfusion.com/js/api-configuration 

 

Based on your requirement, we have prepared simple sample. Please check the sample in below location 

Sample 

Please let us know whether the provided information is helpful for achieve your requirement.  

 

Regards, 

Ashokkumar B.

[Juan Acosta]

Hi Ashokkuma,

Thank you for your reply. I will analyse the source code provided and let you know if I have suggestions or doubts.

Kind regards,

Juan

[Ashokkumar Balasubramanian]

Hi Juan, 

 

Thanks for the update. We will wait to hear from you. 

 

Regards, 

Ashokkumar B.