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Data Grid

Batch Update Request

With the DevExtreme DataGrid, users can modify multiple records and submit all changes simultaneously (when editing.mode is set to "batch"). Batch editing allows you to optimize your app, address performance related issues, and deliver the best possible user experience across a variety of usage scenarios.

If data is stored on a server, our DataGrid sends multiple requests to save edited objects - one request per object (this is because most servers only process one edit operation at a time). If your server supports batch update, you can configure the DataGrid to save all changes with a single request.

To incorporate this functionality into your web app, implement the DataGrid's onSaving function. This function accepts an e object that contains fields used for batch update. The following is a summary of the steps you must follow to enable batch update:

  1. Disable default save logic
    Set the e.cancel field to true.

  2. Send pending changes to the server
    Pending changes are contained in the e.changes array. Ensure it is not empty and send the changes to the server.

  3. Update data in the widget
    Once changes are saved, call the refresh(changesOnly) method.

  4. Reset edit state
    Use the cancelEditData() method to clear pending changes.

@(Html.DevExtreme().DataGrid<DevExtreme.MVC.Demos.Models.Northwind.Order>() .ID("gridContainer") .DataSource(d => d.WebApi() .RouteName("DataGridBatchUpdateWebApi") .LoadAction("Orders") .Key("OrderID") ) .ShowBorders(true) .RemoteOperations(true) .RepaintChangesOnly(true) .Editing(e => e .Mode(GridEditMode.Batch) .AllowAdding(true) .AllowDeleting(true) .AllowUpdating(true) ) .Columns(columns => { columns.AddFor(m => m.OrderID).AllowEditing(false); columns.AddFor(m => m.ShipName); columns.AddFor(m => m.ShipCountry); columns.AddFor(m => m.ShipCity); columns.AddFor(m => m.ShipAddress); columns.AddFor(m => m.OrderDate).DataType(GridColumnDataType.Date); columns.AddFor(m => m.Freight); }) .OnSaving("onSaving") ) <script> function onSaving(e) { e.cancel = true; if (e.changes.length) { e.promise = sendBatchRequest('@Url.HttpRouteUrl("DataGridBatchUpdateWebApi", new { action = "Batch" })', e.changes).done(() => { e.component.refresh(true).done(() => { e.component.cancelEditData(); }); }); } } function sendBatchRequest(url, changes) { var d = $.Deferred(); $.ajax(url, { method: "POST", data: JSON.stringify(changes), cache: false, contentType: 'application/json', xhrFields: { withCredentials: true } }).done(d.resolve).fail(function (xhr) { d.reject(xhr.responseJSON ? xhr.responseJSON.Message : xhr.statusText); }); return d.promise(); } </script>
using DevExtreme.MVC.Demos.Models; using DevExtreme.MVC.Demos.Models.DataGrid; using DevExtreme.MVC.Demos.Models.SampleData; using System; using System.Linq; using System.Web.Mvc; namespace DevExtreme.MVC.Demos.Controllers { public class DataGridController : Controller { public ActionResult BatchUpdateRequest() { return View(); } } }
using DevExtreme.AspNet.Data; using DevExtreme.AspNet.Mvc; using Newtonsoft.Json; using System; using System.Linq; using System.Net; using System.Net.Http; using System.Net.Http.Formatting; using System.Web.Http; using DevExtreme.MVC.Demos.Models.Northwind; using DevExtreme.MVC.Demos.Models.DataGrid; using System.Collections.Generic; namespace DevExtreme.MVC.Demos.Controllers { [Route("api/DataGridWebApi/{action}", Name = "DataGridWebApi")] public class DataGridWebApiController : ApiController { InMemoryNorthwindContext _nwind = new InMemoryNorthwindContext(); [HttpGet] public HttpResponseMessage Orders(DataSourceLoadOptions loadOptions) { return Request.CreateResponse(DataSourceLoader.Load(_nwind.Orders, loadOptions)); } [HttpPost] public HttpResponseMessage InsertOrder(FormDataCollection form) { var values = form.Get("values"); var newOrder = new Order(); JsonConvert.PopulateObject(values, newOrder); Validate(newOrder); if(!ModelState.IsValid) return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState.GetFullErrorMessage()); _nwind.Orders.Add(newOrder); _nwind.SaveChanges(); return Request.CreateResponse(HttpStatusCode.Created, newOrder); } [HttpPut] public HttpResponseMessage UpdateOrder(FormDataCollection form) { var key = Convert.ToInt32(form.Get("key")); var values = form.Get("values"); var order = _nwind.Orders.First(o => o.OrderID == key); JsonConvert.PopulateObject(values, order); Validate(order); if(!ModelState.IsValid) return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState.GetFullErrorMessage()); _nwind.SaveChanges(); return Request.CreateResponse(HttpStatusCode.OK, order); } [HttpDelete] public void DeleteOrder(FormDataCollection form) { var key = Convert.ToInt32(form.Get("key")); var order = _nwind.Orders.First(o => o.OrderID == key); _nwind.Orders.Remove(order); _nwind.SaveChanges(); } // additional actions [HttpGet] public HttpResponseMessage OrderDetails(int orderID, DataSourceLoadOptions loadOptions) { return Request.CreateResponse(DataSourceLoader.Load( from i in _nwind.Order_Details where i.OrderID == orderID select new { Product = i.Product.ProductName, Price = i.UnitPrice, i.Quantity, Sum = i.UnitPrice * i.Quantity }, loadOptions )); } [HttpGet] public HttpResponseMessage ShippersLookup(DataSourceLoadOptions loadOptions) { var lookup = from i in _nwind.Shippers orderby i.CompanyName select new { Value = i.ShipperID, Text = i.CompanyName }; return Request.CreateResponse(DataSourceLoader.Load(lookup, loadOptions)); } [HttpGet] public HttpResponseMessage CustomersLookup(DataSourceLoadOptions loadOptions) { var lookup = from i in _nwind.Customers let text = i.CompanyName + " (" + i.Country + ")" orderby i.CompanyName select new { Value = i.CustomerID, Text = text }; return Request.CreateResponse(DataSourceLoader.Load(lookup, loadOptions)); } [HttpPost] public HttpResponseMessage Batch(List<DataChange> changes) { foreach(var change in changes) { Order order; if(change.Type == "update" || change.Type == "remove") { var key = Convert.ToInt32(change.Key); order = _nwind.Orders.First(o => o.OrderID == key); } else { order = new Order(); } if(change.Type == "insert" || change.Type == "update") { JsonConvert.PopulateObject(change.Data.ToString(), order); Validate(order); if(!ModelState.IsValid) return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState.GetFullErrorMessage()); if(change.Type == "insert") { _nwind.Orders.Add(order); } change.Data = order; } else if(change.Type == "remove") { _nwind.Orders.Remove(order); } } _nwind.SaveChanges(); return Request.CreateResponse(HttpStatusCode.OK, changes); } } }
using Newtonsoft.Json; using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; namespace DevExtreme.MVC.Demos.Models.DataGrid { public class DataChange { [JsonProperty("key")] public object Key { get; set; } [JsonProperty("type")] public string Type { get; set; } [JsonProperty("data")] public object Data { get; set; } } }
using System; using System.Collections.Generic; using System.Data.Entity; namespace DevExtreme.MVC.Demos.Models.Northwind { public class InMemoryNorthwindContext : InMemoryDataContext<Order> { readonly NorthwindContext _nwind = new NorthwindContext(); public DbSet<Customer> Customers => _nwind.Customers; public DbSet<Order_Detail> Order_Details => _nwind.Order_Details; public ICollection<Order> Orders => ItemsInternal; public DbSet<Shipper> Shippers => _nwind.Shippers; protected override IEnumerable<Order> Source => _nwind.Orders; protected override int GetKey(Order item) => item.OrderID; protected override void SetKey(Order item, int key) => item.OrderID = key; } }
#gridContainer { height: 440px; }