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OData Service

Use the ODataStore to bind the TreeList to data an OData service supplies. It provides an interface for loading and editing data and allows you to handle data-related events.

jQuery
JavaScript
$(function() {
    $("#treeListContainer").dxTreeList({
        dataSource: new DevExpress.data.ODataStore({
            url: "https://examples.com/odata/Products",
            key: "Product_ID",
            onLoaded: function () {
                // Event handling commands go here
            }
        })
    });
});
Angular
TypeScript
HTML
import { DxTreeListModule } from "devextreme-angular";
import ODataStore from "devextreme/data/odata/store";
// ...
export class AppComponent {
    productStore = new ODataStore({
        url: "https://examples.com/odata/Products",
        key: "Product_ID",
        onLoaded: function () {
            // Event handling commands go here
        }
    });
}
@NgModule({
    imports: [
        // ...
        DxTreeListModule
    ],
    // ...
})
<dx-tree-list
    [dataSource]="productStore">
</dx-tree-list>

Data kept in the ODataStore can be processed in the DataSource, for example, it can filter data.

jQuery
JavaScript
$(function() {
    $("#treeListContainer").dxTreeList({
        dataSource: new DevExpress.data.DataSource({
            store: {
                type: "odata",
                url: "https://examples.com/odata/Products",
                key: "Product_ID"
            },
            filter: ["Product_Available", "=", true]
        })
    });
});
Angular
TypeScript
HTML
import { DxTreeListModule } from "devextreme-angular";
import "devextreme/data/odata/store";
import DataSource from "devextreme/data/data_source";
// ...
export class AppComponent {
    productDataSource = new DataSource({
        store: {
            type: "odata",
            url: "https://examples.com/odata/Products",
            key: "Product_ID"
        },
        filter: ["Product_Available", "=", true]
    });
}
@NgModule({
    imports: [
        // ...
        DxTreeListModule
    ],
    // ...
})
<dx-tree-list
    [dataSource]="productDataSource">
</dx-tree-list>
NOTE
Setting the ODataStore's deserializeDates property to false may cause filtering issues in the TreeList. See this property's description for details.
See Also