DxGrid.LoadLayout(GridPersistentLayout) Method

Restores the DxGrid layout.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v23.1.dll

NuGet Package: DevExpress.Blazor

Declaration

public void LoadLayout(
    GridPersistentLayout layout
)

Parameters

Name	Type	Description
layout	GridPersistentLayout	A GridPersistentLayout object that stores the layout.

Remarks

The Grid allows you to save and restore the component’s layout when necessary. The saved layout object includes the current page, column sort order/direction, column position, filter values, and grouped columns (information about expanded rows in groups is not included).

Use the LoadLayout method to restore the grid’s layout on demand. As an alternative, handle the LayoutAutoLoading event to restore the layout when the component is initialized.

Complete any of the following steps to obtain an object that stores the Grid layout:

• Use the LayoutAutoSaving event’s e.Layout argument.
• Use the object returned by the SaveLayout() method.
• Create an object that stores the Grid layout manually and convert it to the GridPersistentLayout type using the Deserialize method.

Note that when <DxGrid> loads the saved layout, the component validates the layout object. If the column collection was modified, the Grid component does not restore the column layout. However, the Grid loads other settings of the component level, such as search text, page size, active page, etc. Handle the LayoutAutoLoading event to update the collection of columns manually.

The code below displays two buttons: Save Layout and Load Layout. When a user clicks the first button, the current Grid layout is saved to the Layout parameter. Once a user clicks the second button, the component loads the most recently-saved layout from the Layout parameter and applies it to the grid.

Razor

@using System.Text.Json
@inject NwindDataService NwindDataService
@inject IJSRuntime JSRuntime

<DxButton Text="Save Layout" Click="OnSaveClick" />
<DxButton Text="Load Layout" Click="OnLoadClick" />

<DxGrid @ref="Grid" 
        Data="@GridData" 
        AutoExpandAllGroupRows="true"
        ColumnResizeMode="GridColumnResizeMode.NextColumn"
        ShowGroupPanel="true" 
        ShowFilterRow="true"
        PageSizeSelectorVisible="true" 
        PageSizeSelectorAllRowsItemVisible="true">
    <Columns>
        <DxGridDataColumn FieldName="Country" GroupIndex="0" />
        <DxGridDataColumn FieldName="City" GroupIndex="1" />
        <DxGridDataColumn FieldName="CompanyName" />
        <DxGridDataColumn FieldName="Address" />
        <DxGridDataColumn FieldName="Phone" />
        <DxGridDataColumn FieldName="ContactName" />
    </Columns>
</DxGrid>

@code {
    IGrid Grid { get; set; }
    object GridData { get; set; }
    GridPersistentLayout Layout { get; set; }

    protected override async Task OnInitializedAsync() {
        GridData = await NwindDataService.GetCustomersAsync();
    }

    void OnSaveClick() {
        Layout = Grid.SaveLayout();
    }

    void OnLoadClick() {
        Grid.LoadLayout(Layout);
    }
}

Invoice

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;

namespace BlazorDemo.Data.Northwind {
    public class Invoice {
        public string ShipName { get; set; }
        public string ShipAddress { get; set; }
        public string ShipCity { get; set; }
        public string ShipRegion { get; set; }
        public string ShipPostalCode { get; set; }
        public string ShipCountry { get; set; }
        public string CustomerId { get; set; }
        public string CustomerName { get; set; }
        public string Address { get; set; }
        public string City { get; set; }
        public string Region { get; set; }
        public string PostalCode { get; set; }
        public string Country { get; set; }
        public string Salesperson { get; set; }
        public int OrderId { get; set; }
        public DateTime? OrderDate { get; set; }
        public DateTime? RequiredDate { get; set; }
        public DateTime? ShippedDate { get; set; }
        public string ShipperName { get; set; }
        public int ProductId { get; set; }
        public string ProductName { get; set; }
        public decimal UnitPrice { get; set; }
        public short Quantity { get; set; }
        public float Discount { get; set; }
        public decimal? ExtendedPrice { get; set; }
        public decimal? Freight { get; set; }
    }
}

Customer

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;

namespace BlazorDemo.Data.Northwind {
    public partial class Customer {
        public Customer() {
            Orders = new HashSet<Order>();
        }

        public string CustomerId { get; set; }
        public string CompanyName { get; set; }
        public string ContactName { get; set; }
        public string ContactTitle { get; set; }
        public string Address { get; set; }
        public string City { get; set; }
        public string Region { get; set; }
        public string PostalCode { get; set; }
        public string Country { get; set; }
        public string Phone { get; set; }
        public string Fax { get; set; }

        public virtual ICollection<Order> Orders { get; set; }
    }
}

NwindDataService.Invoices

using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using BlazorDemo.Data.Northwind;
using BlazorDemo.DataProviders;

namespace BlazorDemo.Services {
    public partial class NwindDataService {
        public Task<IEnumerable<Invoice>> GetInvoicesAsync(CancellationToken ct = default) {
            // Return your data here
        }
    }
}

NwindDataService.Customers

using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using BlazorDemo.Data.Northwind;
using BlazorDemo.DataProviders;

namespace BlazorDemo.Services {
    public partial class NwindDataService {
        public Task<IEnumerable<Customer>> GetCustomersAsync(CancellationToken ct = default) {
            // Return your data here
        }
    }
}

Program.cs

// ...
builder.Services.AddScoped<NwindDataService>();

Run Demo: Grid - Save and Restore the Layout View Example: Grid for Blazor - Save and Load Layout Information

Implements

LoadLayout(GridPersistentLayout)