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How can I refresh data from dropdownlist when it comes from ODataV4 Adapter?

I am trying to refresh the source with javascript but I can not do it,
 try several examples but apparently they have changed several things,

this is my control:
 @Html.EJS().DropDownListFor(model => model.Id_Insumo).Placeholder("Seleccione un articulo").DataSource(dataManger =>
                             dataManger.Url("/ControlGarantia/Articulos").Adaptor("ODataV4Adaptor").UpdateUrl("/ControlGarantia/Articulos").CrossDomain(true)).Fields(new Syncfusion.EJ2.DropDowns.DropDownListFieldSettings
                        Value = "value",
                        Text = "text"

3 Replies

PO Prince Oliver Syncfusion Team July 3, 2019 08:33 AM

Hi Wender, 

Thank you for contacting us. 

To refresh the data from a OData source, you need to manually rebind the data to the control. Use the datamanager to the fetch the updated source and bind it the dataSource property. Kindly refer to the following code. 

@Html.EJS().DropDownListFor(model => model.Value).Placeholder("Select a game").Width("300").PopupHeight("200px").DataSource(obj => 
                      obj.Url("https://services.odata.org/V4/Northwind/Northwind.svc/").CrossDomain(true).Adaptor("ODataV4Adaptor")).Fields(new DropDownListFieldSettings 
                          Text = "City", 
                          Value = "City" 
<button onclick="btnClick()">Refresh data</button> 
    function btnClick() { 
        var datamanager = new ej.data.DataManager({ 
            url: 'https://services.odata.org/V4/Northwind/Northwind.svc/', 
            adaptor: new ej.data.ODataV4Adaptor(), 
            crossDomain: true 
        var ddl = document.getElementById("Value").ej2_instances[0]; 
        ddl.datasource = datamanager; 
        ddl.query = new ej.data.Query().from('Employees').select(['City']).take(10); 

We have attached the example for your reference, please find it in the following location: 

Let us know if you need any further assistance on this. 


WE Wender July 3, 2019 09:05 AM

Thank you very much for the quick response, the solution worked.

PO Prince Oliver Syncfusion Team July 4, 2019 12:21 AM

Hi Wender, 

Most Welcome. We are glad to help you. Let us know if you need any further assistance on this. 


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