Update README.md

Author: pollyndos

README.md

@@ -8,7 +8,7 @@ The example shows how to switch between database connections from the Web Dashbo
 
 ![](images/designer-toolbar.png)
 
-To switch between databases from the UI, add buttons corresponding to databases to the Designer Toolbox. Use the [`preparing`](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.Designer.DesignerToolbarExtensionOptions?p=netframework#js_devexpress_dashboard_designer_designertoolbarextensionoptions_onpreparing) event to customize the existing items in the Designer Toolbar. When a button is clicked, a custom header with the corresponding database name (*nwind*/*nwind2*) is passed with the [fetchRemoteService.headers](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.AjaxRemoteService#js_devexpress_dashboard_ajaxremoteservice_headers) option. After that, the [DashboardControl.reloadData](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.DashboardControl#js_devexpress_dashboard_dashboardcontrol_reloaddata) method is called to [reload the data](https://docs.devexpress.com/Dashboard/400983/web-dashboard/integrate-dashboard-component/dashboard-backend/manage-an-in-memory-data-cache?p=netframework#client-side). See the [customizeToolbar.js](./CS/wwwroot/js/customizeToolbar.js) file for implementation details.
+To switch between databases from the UI, add buttons corresponding to databases to the [Designer Toolbar](https://docs.devexpress.com/Dashboard/403426/web-dashboard/ui-elements-and-customization/designer-toolbar). Use the [`preparing`](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.Designer.DesignerToolbarExtensionOptions?p=netframework#js_devexpress_dashboard_designer_designertoolbarextensionoptions_onpreparing) event to customize the existing items in the Designer Toolbar. When a button is clicked, a custom header with the corresponding database name (*nwind*/*nwind2*) is passed with the [fetchRemoteService.headers](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.FetchRemoteServiceOptions#js_devexpress_dashboard_fetchremoteserviceoptions_headers) option. After that, the [DashboardControl.reloadData](https://docs.devexpress.com/Dashboard/js-DevExpress.Dashboard.DashboardControl#js_devexpress_dashboard_dashboardcontrol_reloaddata) method is called to [reload the data](https://docs.devexpress.com/Dashboard/400983/web-dashboard/integrate-dashboard-component/dashboard-backend/manage-an-in-memory-data-cache?p=netframework#client-side). See the [customizeToolbar.js](./CS/wwwroot/js/customizeToolbar.js) file for implementation details.
 
 On the server, the [IHttpContextAccessor](https://docs.microsoft.com/en-us/aspnet/core/fundamentals/http-context?view=aspnetcore-3.0) is used to access the passed parameter value (database name) in the [DashboardConfigurator.ConfigureDataConnection](https://docs.devexpress.com/Dashboard/DevExpress.DashboardWeb.DashboardConfigurator.ConfigureDataConnection) event handler. The [CustomStringConnectionParameters](https://docs.devexpress.com/CoreLibraries/DevExpress.DataAccess.ConnectionParameters.CustomStringConnectionParameters) class instance is used to initialize and apply a custom connection string.