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Resizable

If you want to enable live resize operations for a UI element, wrap that element into a Resizable widget. In this demo, you can resize the DataGrid. Try to drag the handles on the grid's edges.

Configure the following properties to specify resize operation constraints:

Backend API
@using DevExtreme.NETCore.Demos.Models @model IEnumerable<Order> <div class="widget-container"> <div class="dx-fieldset"> <div class="dx-fieldset-header">Resizable DataGrid</div> <div class="dx-field"> @(Html.DevExtreme().Resizable() .ID("gridContainer") .MinWidth(400) .MinHeight(150) .MaxHeight(370) .Area(".widget-container .dx-field") .Content(Html.DevExtreme().DataGrid<Order>() .ID("grid") .DataSource(Model, new[] { "ID" }) .ShowBorders(true) .Height("100%") .Paging(p => p.PageSize(8)) .Scrolling(s => s.Mode(GridScrollingMode.Virtual)) .Columns(columns => { columns.AddFor(m => m.OrderNumber) .AllowGrouping(false) .Width(130); columns.AddFor(m => m.CustomerStoreCity); columns.AddFor(m => m.CustomerStoreState); columns.AddFor(m => m.Employee); columns.AddFor(m => m.OrderDate); columns.AddFor(m => m.SaleAmount) .Format(Format.Currency); }) .ToString() ) ) </div> </div> </div> <div class="options"> <div class="caption">Resizable Options</div> <div class="option"> <div>Handles</div> @(Html.DevExtreme().TagBox() .InputAttr("aria-label", "Behavior") .Items(new[] { "left", "top", "right", "bottom" }) .Value(new[] { "left", "top", "right", "bottom" }) .OnValueChanged("handlesChanged") ) </div> <div class="option"> @(Html.DevExtreme().CheckBox() .Text("Keep aspect ratio") .Value(true) .OnValueChanged("keepAspectRatioChanged") ) </div> </div> <script> const allHandles = ["left", "top", "right", "bottom"]; function keepAspectRatioChanged(e) { const resizable = $("#gridContainer").dxResizable('instance'); resizable.option('keepAspectRatio', e.value); } function handlesChanged({ value }) { const resizable = $("#gridContainer").dxResizable('instance'); const resizableClasses = allHandles.reduce((classes, handle) => { const newClass = value.includes(handle) ? '' : ` no-${handle}-handle`; return classes + newClass; }, ''); resizable.option({ handles: value.join(" "), elementAttr: { class: resizableClasses } }); } </script>
using DevExtreme.NETCore.Demos.Models; using DevExtreme.NETCore.Demos.Models.SampleData; using Microsoft.AspNetCore.Mvc; using System.Linq; namespace DevExtreme.NETCore.Demos.Controllers { public class ResizableController : Controller { public ActionResult Overview() { return View(SampleData.Orders); } } }
using System; using System.ComponentModel.DataAnnotations; namespace DevExtreme.NETCore.Demos.Models { public class Order { public int ID { get; set; } [Display(Name = "Invoice Number")] public int OrderNumber { get; set; } public DateTime OrderDate { get; set; } public int SaleAmount { get; set; } public string Terms { get; set; } public int TotalAmount { get; set; } [Display(Name = "State")] public string CustomerStoreState { get; set; } [Display(Name = "City")] public string CustomerStoreCity { get; set; } public string Employee { get; set; } } }
using System; using System.Collections.Generic; namespace DevExtreme.NETCore.Demos.Models.SampleData { public partial class SampleData { public static readonly IEnumerable<Order> Orders = new[] { new Order { ID = 1, OrderNumber = 35703, OrderDate = DateTime.Parse("2014/04/10"), SaleAmount = 11800, Terms = "15 Days", TotalAmount = 12175, CustomerStoreState = "California", CustomerStoreCity = "Los Angeles", Employee = "Harv Mudd" }, new Order { ID = 4, OrderNumber = 35711, OrderDate = DateTime.Parse("2014/01/12"), SaleAmount = 16050, Terms = "15 Days", TotalAmount = 16550, CustomerStoreState = "California", CustomerStoreCity = "San Jose", Employee = "Jim Packard" }, new Order { ID = 5, OrderNumber = 35714, OrderDate = DateTime.Parse("2014/01/22"), SaleAmount = 14750, Terms = "15 Days", TotalAmount = 15250, CustomerStoreState = "Nevada", CustomerStoreCity = "Las Vegas", Employee = "Harv Mudd" }, new Order { ID = 7, OrderNumber = 35983, OrderDate = DateTime.Parse("2014/02/07"), SaleAmount = 3725, Terms = "15 Days", TotalAmount = 3850, CustomerStoreState = "Colorado", CustomerStoreCity = "Denver", Employee = "Todd Hoffman" }, new Order { ID = 9, OrderNumber = 36987, OrderDate = DateTime.Parse("2014/03/11"), SaleAmount = 14200, Terms = "15 Days", TotalAmount = 14800, CustomerStoreState = "Utah", CustomerStoreCity = "Salt Lake City", Employee = "Clark Morgan" }, new Order { ID = 11, OrderNumber = 38466, OrderDate = DateTime.Parse("2014/03/01"), SaleAmount = 7800, Terms = "15 Days", TotalAmount = 8200, CustomerStoreState = "California", CustomerStoreCity = "Los Angeles", Employee = "Harv Mudd" }, new Order { ID = 14, OrderNumber = 39420, OrderDate = DateTime.Parse("2014/02/15"), SaleAmount = 20500, Terms = "15 Days", TotalAmount = 9100, CustomerStoreState = "California", CustomerStoreCity = "San Jose", Employee = "Jim Packard" }, new Order { ID = 15, OrderNumber = 39874, OrderDate = DateTime.Parse("2014/02/04"), SaleAmount = 9050, Terms = "30 Days", TotalAmount = 19100, CustomerStoreState = "Nevada", CustomerStoreCity = "Las Vegas", Employee = "Harv Mudd" }, new Order { ID = 18, OrderNumber = 42847, OrderDate = DateTime.Parse("2014/02/15"), SaleAmount = 20400, Terms = "30 Days", TotalAmount = 20800, CustomerStoreState = "Wyoming", CustomerStoreCity = "Casper", Employee = "Todd Hoffman" }, new Order { ID = 19, OrderNumber = 43982, OrderDate = DateTime.Parse("2014/05/29"), SaleAmount = 6050, Terms = "30 Days", TotalAmount = 6250, CustomerStoreState = "Utah", CustomerStoreCity = "Salt Lake City", Employee = "Clark Morgan" }, new Order { ID = 29, OrderNumber = 56272, OrderDate = DateTime.Parse("2014/02/06"), SaleAmount = 15850, Terms = "30 Days", TotalAmount = 16350, CustomerStoreState = "Utah", CustomerStoreCity = "Salt Lake City", Employee = "Clark Morgan" }, new Order { ID = 30, OrderNumber = 57429, OrderDate = DateTime.Parse("2013/12/31"), SaleAmount = 11050, Terms = "30 Days", TotalAmount = 11400, CustomerStoreState = "Arizona", CustomerStoreCity = "Phoenix", Employee = "Clark Morgan" }, new Order { ID = 32, OrderNumber = 58292, OrderDate = DateTime.Parse("2014/05/13"), SaleAmount = 13500, Terms = "15 Days", TotalAmount = 13800, CustomerStoreState = "California", CustomerStoreCity = "Los Angeles", Employee = "Harv Mudd" }, new Order { ID = 36, OrderNumber = 62427, OrderDate = DateTime.Parse("2014/01/27"), SaleAmount = 23500, Terms = "15 Days", TotalAmount = 24000, CustomerStoreState = "Nevada", CustomerStoreCity = "Las Vegas", Employee = "Harv Mudd" }, new Order { ID = 39, OrderNumber = 65977, OrderDate = DateTime.Parse("2014/02/05"), SaleAmount = 2550, Terms = "15 Days", TotalAmount = 2625, CustomerStoreState = "Wyoming", CustomerStoreCity = "Casper", Employee = "Todd Hoffman" }, new Order { ID = 40, OrderNumber = 66947, OrderDate = DateTime.Parse("2014/03/23"), SaleAmount = 3500, Terms = "15 Days", TotalAmount = 3600, CustomerStoreState = "Utah", CustomerStoreCity = "Salt Lake City", Employee = "Clark Morgan" }, new Order { ID = 42, OrderNumber = 68428, OrderDate = DateTime.Parse("2014/04/10"), SaleAmount = 10500, Terms = "15 Days", TotalAmount = 10900, CustomerStoreState = "California", CustomerStoreCity = "Los Angeles", Employee = "Harv Mudd" }, new Order { ID = 43, OrderNumber = 69477, OrderDate = DateTime.Parse("2014/03/09"), SaleAmount = 14200, Terms = "15 Days", TotalAmount = 14500, CustomerStoreState = "California", CustomerStoreCity = "Anaheim", Employee = "Harv Mudd" }, new Order { ID = 46, OrderNumber = 72947, OrderDate = DateTime.Parse("2014/01/14"), SaleAmount = 13350, Terms = "30 Days", TotalAmount = 13650, CustomerStoreState = "Nevada", CustomerStoreCity = "Las Vegas", Employee = "Harv Mudd" }, new Order { ID = 47, OrderNumber = 73088, OrderDate = DateTime.Parse("2014/03/25"), SaleAmount = 8600, Terms = "30 Days", TotalAmount = 8850, CustomerStoreState = "Nevada", CustomerStoreCity = "Reno", Employee = "Clark Morgan" }, new Order { ID = 50, OrderNumber = 76927, OrderDate = DateTime.Parse("2014/04/27"), SaleAmount = 9800, Terms = "30 Days", TotalAmount = 10050, CustomerStoreState = "Utah", CustomerStoreCity = "Salt Lake City", Employee = "Clark Morgan" }, new Order { ID = 51, OrderNumber = 77297, OrderDate = DateTime.Parse("2014/04/30"), SaleAmount = 10850, Terms = "30 Days", TotalAmount = 11100, CustomerStoreState = "Arizona", CustomerStoreCity = "Phoenix", Employee = "Clark Morgan" }, new Order { ID = 56, OrderNumber = 84744, OrderDate = DateTime.Parse("2014/02/10"), SaleAmount = 4650, Terms = "30 Days", TotalAmount = 4750, CustomerStoreState = "Nevada", CustomerStoreCity = "Las Vegas", Employee = "Harv Mudd" }, new Order { ID = 57, OrderNumber = 85028, OrderDate = DateTime.Parse("2014/05/17"), SaleAmount = 2575, Terms = "30 Days", TotalAmount = 2625, CustomerStoreState = "Nevada", CustomerStoreCity = "Reno", Employee = "Clark Morgan" }, new Order { ID = 59, OrderNumber = 87297, OrderDate = DateTime.Parse("2014/04/21"), SaleAmount = 14200, Terms = "30 Days", CustomerStoreState = "Wyoming", CustomerStoreCity = "Casper", Employee = "Todd Hoffman" }, new Order { ID = 60, OrderNumber = 88027, OrderDate = DateTime.Parse("2014/02/14"), SaleAmount = 13650, Terms = "30 Days", TotalAmount = 14050, CustomerStoreState = "Utah", CustomerStoreCity = "Salt Lake City", Employee = "Clark Morgan" }, new Order { ID = 65, OrderNumber = 94726, OrderDate = DateTime.Parse("2014/05/22"), SaleAmount = 20500, Terms = "15 Days", TotalAmount = 20800, CustomerStoreState = "California", CustomerStoreCity = "San Jose", Employee = "Jim Packard" }, new Order { ID = 66, OrderNumber = 95266, OrderDate = DateTime.Parse("2014/03/10"), SaleAmount = 9050, Terms = "15 Days", TotalAmount = 9250, CustomerStoreState = "Nevada", CustomerStoreCity = "Las Vegas", Employee = "Harv Mudd" }, new Order { ID = 69, OrderNumber = 98477, OrderDate = DateTime.Parse("2014/01/01"), SaleAmount = 23500, Terms = "15 Days", TotalAmount = 23800, CustomerStoreState = "Wyoming", CustomerStoreCity = "Casper", Employee = "Todd Hoffman" }, new Order { ID = 70, OrderNumber = 99247, OrderDate = DateTime.Parse("2014/02/08"), SaleAmount = 2100, Terms = "15 Days", TotalAmount = 2150, CustomerStoreState = "Utah", CustomerStoreCity = "Salt Lake City", Employee = "Clark Morgan" }, new Order { ID = 78, OrderNumber = 174884, OrderDate = DateTime.Parse("2014/04/10"), SaleAmount = 7200, Terms = "30 Days", TotalAmount = 7350, CustomerStoreState = "Colorado", CustomerStoreCity = "Denver", Employee = "Todd Hoffman" }, new Order { ID = 81, OrderNumber = 188877, OrderDate = DateTime.Parse("2014/02/11"), SaleAmount = 8750, Terms = "30 Days", TotalAmount = 8900, CustomerStoreState = "Arizona", CustomerStoreCity = "Phoenix", Employee = "Clark Morgan" }, new Order { ID = 82, OrderNumber = 191883, OrderDate = DateTime.Parse("2014/02/05"), SaleAmount = 9900, Terms = "30 Days", TotalAmount = 10150, CustomerStoreState = "California", CustomerStoreCity = "Los Angeles", Employee = "Harv Mudd" }, new Order { ID = 83, OrderNumber = 192474, OrderDate = DateTime.Parse("2014/01/21"), SaleAmount = 12800, Terms = "30 Days", TotalAmount = 13100, CustomerStoreState = "California", CustomerStoreCity = "Anaheim", Employee = "Harv Mudd" }, new Order { ID = 84, OrderNumber = 193847, OrderDate = DateTime.Parse("2014/03/21"), SaleAmount = 14100, Terms = "30 Days", TotalAmount = 14350, CustomerStoreState = "California", CustomerStoreCity = "San Diego", Employee = "Harv Mudd" }, new Order { ID = 85, OrderNumber = 194877, OrderDate = DateTime.Parse("2014/03/06"), SaleAmount = 4750, Terms = "30 Days", TotalAmount = 4950, CustomerStoreState = "California", CustomerStoreCity = "San Jose", Employee = "Jim Packard" }, new Order { ID = 86, OrderNumber = 195746, OrderDate = DateTime.Parse("2014/05/26"), SaleAmount = 9050, Terms = "30 Days", TotalAmount = 9250, CustomerStoreState = "Nevada", CustomerStoreCity = "Las Vegas", Employee = "Harv Mudd" }, new Order { ID = 87, OrderNumber = 197474, OrderDate = DateTime.Parse("2014/03/02"), SaleAmount = 6400, Terms = "30 Days", TotalAmount = 6600, CustomerStoreState = "Nevada", CustomerStoreCity = "Reno", Employee = "Clark Morgan" }, new Order { ID = 88, OrderNumber = 198746, OrderDate = DateTime.Parse("2014/05/09"), SaleAmount = 15700, Terms = "30 Days", TotalAmount = 16050, CustomerStoreState = "Colorado", CustomerStoreCity = "Denver", Employee = "Todd Hoffman" }, new Order { ID = 91, OrderNumber = 214222, OrderDate = DateTime.Parse("2014/02/08"), SaleAmount = 11050, Terms = "30 Days", TotalAmount = 11250, CustomerStoreState = "Arizona", CustomerStoreCity = "Phoenix", Employee = "Clark Morgan" } }; } }
.widget-container { width: calc(100% - 360px); height: 100%; margin-right: 320px; position: absolute; z-index: 1501; } .dx-fieldset, .dx-field { width: 100%; height: calc(100% - 60px); } .options { padding: 20px; background-color: rgba(191, 191, 191, 0.15); position: absolute; right: 0; top: 0; bottom: 0; width: 260px; } .caption { font-weight: 500; font-size: 18px; } .option { margin-top: 10px; } #gridContainer { padding: 10px; height: 300px; } #grid { border: 1px solid black; } .no-left-handle .dx-resizable-handle-top, .no-left-handle .dx-resizable-handle-bottom { left: 10px; width: calc(100% - 10px); } .no-right-handle .dx-resizable-handle-top, .no-right-handle .dx-resizable-handle-bottom { right: 10px; width: calc(100% - 10px); } .no-right-handle.no-left-handle .dx-resizable-handle-top, .no-right-handle.no-left-handle .dx-resizable-handle-bottom { left: 10px; width: calc(100% - 20px); } .no-top-handle .dx-resizable-handle-right, .no-top-handle .dx-resizable-handle-left { top: 10px; height: calc(100% - 10px); } .no-bottom-handle .dx-resizable-handle-right, .no-bottom-handle .dx-resizable-handle-left { bottom: 10px; height: calc(100% - 10px); } .no-top-handle.no-bottom-handle .dx-resizable-handle-left, .no-top-handle.no-bottom-handle .dx-resizable-handle-right { top: 10px; height: calc(100% - 20px); } .dx-resizable-handle-right { border-right: 1px dotted #999; } .dx-resizable-handle-top { border-top: 1px dotted #999; } .dx-resizable-handle-left { border-left: 1px dotted #999; } .dx-resizable-handle-bottom { border-bottom: 1px dotted #999; } .dx-resizable-handle::after { content: ""; position: absolute; width: 9px; height: 9px; border: none; border-radius: 50%; background-color: #fff; box-shadow: 0 2px 6px 0 rgba(0, 0, 0, 0.24); } .dx-resizable-handle-right::after { top: 50%; right: -5px; transform: translateY(-50%); } .dx-resizable-handle-left::after { top: 50%; left: -5px; transform: translateY(-50%); } .dx-resizable-handle-corner-top-left::after { top: -4px; left: -4px; } .dx-resizable-handle-corner-top-right::after { top: -4px; right: -4px; } .dx-resizable-handle-corner-bottom-left::after { bottom: -4px; left: -4px; } .dx-resizable-handle-corner-bottom-right::after { bottom: -4px; right: -4px; } .dx-resizable-handle-top::after { top: -5px; left: 50%; transform: translateX(-50%); } .dx-resizable-handle-bottom::after { bottom: -5px; left: 50%; transform: translateX(-50%); }

You can display resize handles on edges or corners. Use the following keywords to set up the handles property: top, bottom, left, and right. If you specify two adjacent sides (for example, "bottom right"), the control displays a handle in the corner.

The keepAspectRatio property specifies whether a corner handle resizes content proportionally. Set this property to false to allow free-form resize operations.