blazor-devexpress-dot-blazor-dot-dxgrid-f313942d.md
Specifies how users edit Grid data.
Namespace : DevExpress.Blazor
Assembly : DevExpress.Blazor.v25.2.dll
NuGet Package : DevExpress.Blazor
[DefaultValue(GridEditMode.EditForm)]
[Parameter]
public GridEditMode EditMode { get; set; }
| Type | Default | Description |
|---|---|---|
| GridEditMode | EditForm |
A GridEditMode enumeration value.
|
Available values:
| Name | Description |
|---|---|
| EditForm |
The Grid displays the edit form instead of the edited data row.
| | PopupEditForm |
The Grid displays the edit form in a pop-up window and focuses the form’s first data editor.
| | EditRow |
The Grid displays inline editors instead of the edited data row.
| | EditCell |
The Grid displays an in-place editor when a user clicks a data cell. The component saves all cell values simultaneously when focus leaves the edited row.
|
Use the EditMode option to specify how users edit Grid data.
The Grid displays the edit form instead of the edited data row.
Read Tutorial: Edit FormsRun Demo: Edit Forms
Show Code
@using Microsoft.EntityFrameworkCore
@inject IDbContextFactory<NorthwindContext> NorthwindContextFactory
@implements IDisposable
<DxGrid Data="GridDataSource"
EditModelSaving="OnEditModelSaving"
DataItemDeleting="OnDataItemDeleting"
KeyFieldName="EmployeeId">
<Columns>
<DxGridCommandColumn />
<DxGridDataColumn FieldName="FirstName" />
<DxGridDataColumn FieldName="LastName" />
<DxGridDataColumn FieldName="Title" />
<DxGridDataColumn FieldName="HireDate" />
</Columns>
<EditFormTemplate Context="editFormContext">
<DxFormLayout>
<DxFormLayoutItem Caption="First Name:">
@editFormContext.GetEditor("FirstName")
</DxFormLayoutItem>
<DxFormLayoutItem Caption="Last Name:">
@editFormContext.GetEditor("LastName")
</DxFormLayoutItem>
<DxFormLayoutItem Caption="Title:">
@editFormContext.GetEditor("Title")
</DxFormLayoutItem>
<DxFormLayoutItem Caption="Hire Date:">
@editFormContext.GetEditor("HireDate")
</DxFormLayoutItem>
</DxFormLayout>
</EditFormTemplate>
</DxGrid>
@code {
IEnumerable<object> GridDataSource { get; set; }
NorthwindContext Northwind { get; set; }
protected override async Task OnInitializedAsync() {
Northwind = NorthwindContextFactory.CreateDbContext();
GridDataSource = await Northwind.Employees.ToListAsync();
}
async Task OnEditModelSaving(GridEditModelSavingEventArgs e) {
var editModel = (Employee)e.EditModel;
// Assign changes from the edit model to the data item.
if (e.IsNew)
await Northwind.AddAsync(editModel);
else
e.CopyChangesToDataItem();
// Post changes to the database.
await Northwind.SaveChangesAsync();
// Reload the entire Grid.
GridDataSource = await Northwind.Employees.ToListAsync();
}
async Task OnDataItemDeleting(GridDataItemDeletingEventArgs e) {
// Remove the data item from the database.
Northwind.Remove(e.DataItem);
await Northwind.SaveChangesAsync();
// Reload the entire Grid.
GridDataSource = await Northwind.Employees.ToListAsync();
}
public void Dispose() {
Northwind?.Dispose();
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
namespace Grid.Northwind {
public partial class Employee {
public int EmployeeId { get; set; }
[Required]
public string LastName { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string Title { get; set; }
public string TitleOfCourtesy { get; set; }
public Nullable BirthDate { get; set; }
[Required]
[Range(typeof(DateTime), "1/1/2000", "1/1/2020",
ErrorMessage = "HireDate must be between {1:d} and {2:d}")]
public Nullable HireDate { 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 HomePhone { get; set; }
public string Extension { get; set; }
public byte[] Photo { get; set; }
public string Notes { get; set; }
public Nullable<int> ReportsTo { get; set; }
public string PhotoPath { get; set; }
public virtual ICollection<Order> Orders { get; set; }
public string Text => $"{FirstName} {LastName} ({Title})";
public string ImageFileName => $"Employees/{EmployeeId}.jpg";
}
}
using Microsoft.EntityFrameworkCore;
#nullable disable
namespace Grid.Northwind {
public partial class NorthwindContext : DbContext {
public NorthwindContext(DbContextOptions<NorthwindContext> options)
: base(options) {
}
// ...
public virtual DbSet<Employee> Employees { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) {
if(!optionsBuilder.IsConfigured) {
optionsBuilder.UseSqlServer("Server=.\\sqlexpress;Database=Northwind;Integrated Security=true");
}
}
protected override void OnModelCreating(ModelBuilder modelBuilder) {
modelBuilder.HasAnnotation("Relational:Collation", "SQL_Latin1_General_CP1_CI_AS");
// ...
modelBuilder.Entity<Employee>(entity => {
entity.HasIndex(e => e.EmployeeId, "EmployeeId");
entity.HasIndex(e => e.LastName, "LastName");
entity.HasIndex(e => e.FirstName, "FirstName");
entity.HasIndex(e => e.Title, "Title");
entity.HasIndex(e => e.BirthDate, "BirthDate");
entity.HasIndex(e => e.HireDate, "HireDate");
entity.HasIndex(e => e.Notes, "Notes");
});
OnModelCreatingPartial(modelBuilder);
}
partial void OnModelCreatingPartial(ModelBuilder modelBuilder);
}
}
using Microsoft.EntityFrameworkCore;
// ...
builder.Services.AddDbContextFactory<NorthwindContext>((sp, options) => {
var env = sp.GetRequiredService<IWebHostEnvironment>();
var dbPath = Path.Combine(env.ContentRootPath, "Northwind-5e44b51f.mdf");
options.UseSqlServer("Server=(localdb)\\MSSQLLocalDB;Integrated Security=true;AttachDbFileName=" + dbPath);
});
The Grid displays the edit form in a pop-up window.
Read Tutorial: Edit FormsRun Demo: Edit Forms
Specify the PopupEditFormCssClass property to apply a CSS class to the pop-up edit form. The PopupEditFormHeaderText property allows you to change text in the edit form header.
Show Code
@using Microsoft.EntityFrameworkCore
@inject IDbContextFactory<NorthwindContext> NorthwindContextFactory
@implements IDisposable
<DxGrid Data="GridDataSource"
EditModelSaving="OnEditModelSaving"
DataItemDeleting="OnDataItemDeleting"
KeyFieldName="EmployeeId"
EditMode="GridEditMode.PopupEditForm">
<Columns>
<DxGridCommandColumn />
<DxGridDataColumn FieldName="FirstName" />
<DxGridDataColumn FieldName="LastName" />
<DxGridDataColumn FieldName="Title" />
<DxGridDataColumn FieldName="HireDate" />
</Columns>
<EditFormTemplate Context="editFormContext">
<DxFormLayout>
<DxFormLayoutItem Caption="First Name:">
@editFormContext.GetEditor("FirstName")
</DxFormLayoutItem>
<DxFormLayoutItem Caption="Last Name:">
@editFormContext.GetEditor("LastName")
</DxFormLayoutItem>
<DxFormLayoutItem Caption="Title:">
@editFormContext.GetEditor("Title")
</DxFormLayoutItem>
<DxFormLayoutItem Caption="Hire Date:">
@editFormContext.GetEditor("HireDate")
</DxFormLayoutItem>
</DxFormLayout>
</EditFormTemplate>
</DxGrid>
@code {
IEnumerable<object> GridDataSource { get; set; }
NorthwindContext Northwind { get; set; }
protected override async Task OnInitializedAsync() {
Northwind = NorthwindContextFactory.CreateDbContext();
GridDataSource = await Northwind.Employees.ToListAsync();
}
async Task OnEditModelSaving(GridEditModelSavingEventArgs e) {
var editModel = (Employee)e.EditModel;
// Assign changes from the edit model to the data item.
if (e.IsNew)
await Northwind.AddAsync(editModel);
else
e.CopyChangesToDataItem();
// Post changes to the database.
await Northwind.SaveChangesAsync();
// Reload the entire Grid.
GridDataSource = await Northwind.Employees.ToListAsync();
}
async Task OnDataItemDeleting(GridDataItemDeletingEventArgs e) {
// Remove the data item from the database.
Northwind.Remove(e.DataItem);
await Northwind.SaveChangesAsync();
// Reload the entire Grid.
GridDataSource = await Northwind.Employees.ToListAsync();
}
public void Dispose() {
Northwind?.Dispose();
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
namespace Grid.Northwind {
public partial class Employee {
public int EmployeeId { get; set; }
[Required]
public string LastName { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string Title { get; set; }
public string TitleOfCourtesy { get; set; }
public Nullable BirthDate { get; set; }
[Required]
[Range(typeof(DateTime), "1/1/2000", "1/1/2020",
ErrorMessage = "HireDate must be between {1:d} and {2:d}")]
public Nullable HireDate { 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 HomePhone { get; set; }
public string Extension { get; set; }
public byte[] Photo { get; set; }
public string Notes { get; set; }
public Nullable<int> ReportsTo { get; set; }
public string PhotoPath { get; set; }
public virtual ICollection<Order> Orders { get; set; }
public string Text => $"{FirstName} {LastName} ({Title})";
public string ImageFileName => $"Employees/{EmployeeId}.jpg";
}
}
using Microsoft.EntityFrameworkCore;
#nullable disable
namespace Grid.Northwind {
public partial class NorthwindContext : DbContext {
public NorthwindContext(DbContextOptions<NorthwindContext> options)
: base(options) {
}
// ...
public virtual DbSet<Employee> Employees { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) {
if(!optionsBuilder.IsConfigured) {
optionsBuilder.UseSqlServer("Server=.\\sqlexpress;Database=Northwind;Integrated Security=true");
}
}
protected override void OnModelCreating(ModelBuilder modelBuilder) {
modelBuilder.HasAnnotation("Relational:Collation", "SQL_Latin1_General_CP1_CI_AS");
// ...
modelBuilder.Entity<Employee>(entity => {
entity.HasIndex(e => e.EmployeeId, "EmployeeId");
entity.HasIndex(e => e.LastName, "LastName");
entity.HasIndex(e => e.FirstName, "FirstName");
entity.HasIndex(e => e.Title, "Title");
entity.HasIndex(e => e.BirthDate, "BirthDate");
entity.HasIndex(e => e.HireDate, "HireDate");
entity.HasIndex(e => e.Notes, "Notes");
});
OnModelCreatingPartial(modelBuilder);
}
partial void OnModelCreatingPartial(ModelBuilder modelBuilder);
}
}
using Microsoft.EntityFrameworkCore;
// ...
builder.Services.AddDbContextFactory<NorthwindContext>((sp, options) => {
var env = sp.GetRequiredService<IWebHostEnvironment>();
var dbPath = Path.Combine(env.ContentRootPath, "Northwind-5e44b51f.mdf");
options.UseSqlServer("Server=(localdb)\\MSSQLLocalDB;Integrated Security=true;AttachDbFileName=" + dbPath);
});
View Example: Use an External Popup as an Edit Form
The Grid displays inline editors instead of the edited row.
Read Tutorial: Inline Edit RowRun Demo: Edit RowView Example: Inline Editing
The Grid component automatically generates editors for columns based on their data types. A column’s CellEditTemplate allows you to display custom content in the edit row cell. To define a common cell edit template for all data columns, use the Grid’s DataColumnCellEditTemplate.
Show Code
@inject NwindDataService NwindDataService
<DxGrid Data="GridDataSource"
KeyFieldName="EmployeeId"
EditModelSaving="OnEditModelSaving"
DataItemDeleting="OnDataItemDeleting"
EditMode="GridEditMode.EditRow">
<Columns>
<DxGridCommandColumn />
<DxGridDataColumn FieldName="FirstName" />
<DxGridDataColumn FieldName="LastName" />
<DxGridDataColumn FieldName="Title" />
<DxGridDataColumn FieldName="HireDate" />
</Columns>
</DxGrid>
@code {
IEnumerable<object> GridDataSource { get; set; }
NorthwindContext Northwind { get; set; }
protected override async Task OnInitializedAsync() {
Northwind = NorthwindContextFactory.CreateDbContext();
GridDataSource = await Northwind.Employees.ToListAsync();
}
async Task OnEditModelSaving(GridEditModelSavingEventArgs e) {
var editModel = (Employee)e.EditModel;
// Assign changes from the edit model to the data item.
if (e.IsNew)
await Northwind.AddAsync(editModel);
else
e.CopyChangesToDataItem();
// Post changes to the database.
await Northwind.SaveChangesAsync();
// Reload the entire Grid.
GridDataSource = await Northwind.Employees.ToListAsync();
}
async Task OnDataItemDeleting(GridDataItemDeletingEventArgs e) {
// Remove the data item from the database.
Northwind.Remove(e.DataItem);
await Northwind.SaveChangesAsync();
// Reload the entire Grid.
GridDataSource = await Northwind.Employees.ToListAsync();
}
public void Dispose() {
Northwind?.Dispose();
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
namespace Grid.Northwind {
public partial class Employee {
public int EmployeeId { get; set; }
[Required]
public string LastName { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string Title { get; set; }
public string TitleOfCourtesy { get; set; }
public Nullable BirthDate { get; set; }
[Required]
[Range(typeof(DateTime), "1/1/2000", "1/1/2020",
ErrorMessage = "HireDate must be between {1:d} and {2:d}")]
public Nullable HireDate { 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 HomePhone { get; set; }
public string Extension { get; set; }
public byte[] Photo { get; set; }
public string Notes { get; set; }
public Nullable<int> ReportsTo { get; set; }
public string PhotoPath { get; set; }
public virtual ICollection<Order> Orders { get; set; }
public string Text => $"{FirstName} {LastName} ({Title})";
public string ImageFileName => $"Employees/{EmployeeId}.jpg";
}
}
using Microsoft.EntityFrameworkCore;
#nullable disable
namespace Grid.Northwind {
public partial class NorthwindContext : DbContext {
public NorthwindContext(DbContextOptions<NorthwindContext> options)
: base(options) {
}
// ...
public virtual DbSet<Employee> Employees { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) {
if(!optionsBuilder.IsConfigured) {
optionsBuilder.UseSqlServer("Server=.\\sqlexpress;Database=Northwind;Integrated Security=true");
}
}
protected override void OnModelCreating(ModelBuilder modelBuilder) {
modelBuilder.HasAnnotation("Relational:Collation", "SQL_Latin1_General_CP1_CI_AS");
// ...
modelBuilder.Entity<Employee>(entity => {
entity.HasIndex(e => e.EmployeeId, "EmployeeId");
entity.HasIndex(e => e.LastName, "LastName");
entity.HasIndex(e => e.FirstName, "FirstName");
entity.HasIndex(e => e.Title, "Title");
entity.HasIndex(e => e.BirthDate, "BirthDate");
entity.HasIndex(e => e.HireDate, "HireDate");
entity.HasIndex(e => e.Notes, "Notes");
});
OnModelCreatingPartial(modelBuilder);
}
partial void OnModelCreatingPartial(ModelBuilder modelBuilder);
}
}
using Microsoft.EntityFrameworkCore;
// ...
builder.Services.AddDbContextFactory<NorthwindContext>((sp, options) => {
var env = sp.GetRequiredService<IWebHostEnvironment>();
var dbPath = Path.Combine(env.ContentRootPath, "Northwind-5e44b51f.mdf");
options.UseSqlServer("Server=(localdb)\\MSSQLLocalDB;Integrated Security=true;AttachDbFileName=" + dbPath);
});
The Grid displays an in-place editor when a user clicks a data cell. A user can edit the current value and activate editors for other cells in the same row. The component saves all cell values simultaneously when focus leaves the edited row. Edit , Cancel , and Save buttons are unnecessary in this mode.
Read Tutorial: Cell EditingRun Demo: Edit CellRun Demo: Edit BatchView Example: Enable Batch Data Editing with Entity Framework Core
Refer to the following topic for additional information about the Edit Cell mode’s specifics and limitations: Edit Cell Mode –- Limitations.
Show Code
@inject NwindDataService NwindDataService
<DxGrid Data="GridDataSource"
KeyFieldName="EmployeeId"
EditModelSaving="OnEditModelSaving"
DataItemDeleting="OnDataItemDeleting"
EditMode="GridEditMode.EditCell">
<Columns>
<DxGridCommandColumn EditButtonVisible="false"
CancelButtonVisible="false"
SaveButtonVisible="false" />
<DxGridDataColumn FieldName="FirstName" />
<DxGridDataColumn FieldName="LastName" />
<DxGridDataColumn FieldName="Title" />
<DxGridDataColumn FieldName="HireDate" />
</Columns>
</DxGrid>
@code {
IEnumerable<object> GridDataSource { get; set; }
NorthwindContext Northwind { get; set; }
protected override async Task OnInitializedAsync() {
Northwind = NorthwindContextFactory.CreateDbContext();
GridDataSource = await Northwind.Employees.ToListAsync();
}
async Task OnEditModelSaving(GridEditModelSavingEventArgs e) {
var editModel = (Employee)e.EditModel;
// Assign changes from the edit model to the data item.
if (e.IsNew)
await Northwind.AddAsync(editModel);
else
e.CopyChangesToDataItem();
// Post changes to the database.
await Northwind.SaveChangesAsync();
// Reload the entire Grid.
GridDataSource = await Northwind.Employees.ToListAsync();
}
async Task OnDataItemDeleting(GridDataItemDeletingEventArgs e) {
// Remove the data item from the database.
Northwind.Remove(e.DataItem);
await Northwind.SaveChangesAsync();
// Reload the entire Grid.
GridDataSource = await Northwind.Employees.ToListAsync();
}
public void Dispose() {
Northwind?.Dispose();
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
namespace Grid.Northwind {
public partial class Employee {
public int EmployeeId { get; set; }
[Required]
public string LastName { get; set; }
[Required]
public string FirstName { get; set; }
[Required]
public string Title { get; set; }
public string TitleOfCourtesy { get; set; }
public Nullable BirthDate { get; set; }
[Required]
[Range(typeof(DateTime), "1/1/2000", "1/1/2020",
ErrorMessage = "HireDate must be between {1:d} and {2:d}")]
public Nullable HireDate { 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 HomePhone { get; set; }
public string Extension { get; set; }
public byte[] Photo { get; set; }
public string Notes { get; set; }
public Nullable<int> ReportsTo { get; set; }
public string PhotoPath { get; set; }
public virtual ICollection<Order> Orders { get; set; }
public string Text => $"{FirstName} {LastName} ({Title})";
public string ImageFileName => $"Employees/{EmployeeId}.jpg";
}
}
using Microsoft.EntityFrameworkCore;
#nullable disable
namespace Grid.Northwind {
public partial class NorthwindContext : DbContext {
public NorthwindContext(DbContextOptions<NorthwindContext> options)
: base(options) {
}
// ...
public virtual DbSet<Employee> Employees { get; set; }
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) {
if(!optionsBuilder.IsConfigured) {
optionsBuilder.UseSqlServer("Server=.\\sqlexpress;Database=Northwind;Integrated Security=true");
}
}
protected override void OnModelCreating(ModelBuilder modelBuilder) {
modelBuilder.HasAnnotation("Relational:Collation", "SQL_Latin1_General_CP1_CI_AS");
// ...
modelBuilder.Entity<Employee>(entity => {
entity.HasIndex(e => e.EmployeeId, "EmployeeId");
entity.HasIndex(e => e.LastName, "LastName");
entity.HasIndex(e => e.FirstName, "FirstName");
entity.HasIndex(e => e.Title, "Title");
entity.HasIndex(e => e.BirthDate, "BirthDate");
entity.HasIndex(e => e.HireDate, "HireDate");
entity.HasIndex(e => e.Notes, "Notes");
});
OnModelCreatingPartial(modelBuilder);
}
partial void OnModelCreatingPartial(ModelBuilder modelBuilder);
}
}
using Microsoft.EntityFrameworkCore;
// ...
builder.Services.AddDbContextFactory<NorthwindContext>((sp, options) => {
var env = sp.GetRequiredService<IWebHostEnvironment>();
var dbPath = Path.Combine(env.ContentRootPath, "Northwind-5e44b51f.mdf");
options.UseSqlServer("Server=(localdb)\\MSSQLLocalDB;Integrated Security=true;AttachDbFileName=" + dbPath);
});
See Also