How to refresh SfDropDownList drop down contents when using odata v4 data adaptor

[Mark de Leeuw]

I want to add a refresh button in the footer of my SfDropDownList to allow the user to reload the contents of the drop down from the data source using odata v4 adaptor.

I don't know what function to call on the component or data manager to force a reload/refresh.

I included my component.

Using VS2022 and version 19.4.0.52

Attachment: Components_f4081416.zip

[Sureshkumar P]

Mark, 

 

You can achieve your requirement by change the Query property value as like below code.  

 

Find the code example: 

 

<SfDropDownList TValue="string" TItem="orders" Placeholder="Select a Employee" Query="@Query"> 

    <SfDataManager Url="https://js.syncfusion.com/ejServices/Wcf/Northwind.svc/Orders/" Adaptor="Syncfusion.Blazor.Adaptors.ODataAdaptor" CrossDomain=true></SfDataManager> 

    <DropDownListFieldSettings Text="CustomerID" Value="CustomerID"></DropDownListFieldSettings> 

    <DropDownListTemplates TItem=orders> 

        <FooterTemplate> 

            <button @onclick="ButtonClick">Click to refresh</button> 

        </FooterTemplate> 

    </DropDownListTemplates> 

</SfDropDownList> 

 

@code { 

    public Query Query = new Query(); 

 

    void ButtonClick() 

    { 

Query = new Query().Take(5); 

    } 

 

    public class orders 

    { 

        public string CustomerID { get; set; } 

    } 

} 

 

Find the sample here: https://www.syncfusion.com/downloads/support/directtrac/general/ze/DDL423932678  

 

Regards, 

Sureshkumar P