wpf devexpress项目中添加GridControl绑定数据

本教程讲解了如何添加GridControl到wpf项目中并且绑定数据

原文地址Lesson 1 - Add a GridControl to a Project and Bind it to Data | WPF Controls | DevExpress Documentation

1、使用 DevExpress Template Gallery创建一个新的空白mvvm应用程序，这个项目包括了一个视图模型，设置此视图模型作为MainView数据上下文

2、按照如下给此项目添加数据库Blank .NET 6 App with the Northwind Database .

3、在MainView中添加工具箱选项GridControl:

如果你的项目没有DevExpress.Wpf.Grid.Core 引用，vs一定显示如下信息：

此消息提示你必须添加控件引用。

如果你从Nuget订阅devexpress，进入工具，nuget包管理器，添加DevExpress.Wpf.Grid

4、在Quick Actions菜单中选择GridControl，点击绑定到数据源，在Items Source Wizard:

5、选择数据源：

在GridControl选择table：

选择简单绑定模型，查看如下提示消息关于绑定模型：WPF Data Grid: Bind to Data.

确保CRUD 选项启动：

在视图模型选择视图模型选项生成数据绑定源码。在已选择的View Model中选择MainViewModel：

6、Items Source Wizard 生成如下代码：

<dxg:GridControl x:Name="grid" AutoGenerateColumns="AddNew" EnableSmartColumnsGeneration="True" ItemsSource="{Binding ItemsSource}" RestoreStateKeyFieldName="OrderId" RestoreStateOnSourceChange="True">
    <dxg:GridControl.TotalSummary>
        <dxg:GridSummaryItem Alignment="Right" SummaryType="Count"/>
    dxg:GridControl.TotalSummary>
    <dxg:GridControl.InputBindings>
        <KeyBinding Command="{Binding View.Commands.DeleteFocusedRow, ElementName=grid}" Key="Delete"/>
    dxg:GridControl.InputBindings>
    <dxg:GridControl.View>
        <dxg:TableView NewItemRowPosition="Top" ShowUpdateRowButtons="OnCellEditorOpen" ValidateRowCommand="{Binding ValidateRowCommand}" ValidateRowDeletionCommand="{Binding ValidateRowDeletionCommand}" DataSourceRefreshCommand="{Binding DataSourceRefreshCommand}" ShowFixedTotalSummary="True"/>
    dxg:GridControl.View>
    <dxg:GridColumn FieldName="OrderId" IsSmart="True" ReadOnly="True"/>
    <dxg:GridColumn FieldName="CustomerId" IsSmart="True"/>
    <dxg:GridColumn FieldName="EmployeeId" IsSmart="True"/>
    <dxg:GridColumn FieldName="OrderDate" IsSmart="True"/>
    <dxg:GridColumn FieldName="RequiredDate" IsSmart="True"/>
    <dxg:GridColumn FieldName="ShippedDate" IsSmart="True"/>
    <dxg:GridColumn FieldName="ShipVia" IsSmart="True"/>
    <dxg:GridColumn FieldName="Freight" IsSmart="True"/>
    <dxg:GridColumn FieldName="ShipName" IsSmart="True"/>
    <dxg:GridColumn FieldName="ShipAddress" IsSmart="True"/>
    <dxg:GridColumn FieldName="ShipCity" IsSmart="True"/>
    <dxg:GridColumn FieldName="ShipRegion" IsSmart="True"/>
    <dxg:GridColumn FieldName="ShipPostalCode" IsSmart="True"/>
    <dxg:GridColumn FieldName="ShipCountry" IsSmart="True"/>
dxg:GridControl>

using DevExpress.Mvvm;
using System;
using WPF_DataGrid_GetStarted.Models;
using DevExpress.Mvvm.DataAnnotations;
using System.Linq;
using System.Collections.Generic;
using DevExpress.Mvvm.Xpf;
 
namespace WPF_DataGrid_GetStarted.ViewModels {
    public class MainViewModel : ViewModelBase {
        NorthwindEntities _Context;
        IList _ItemsSource;
        public IList ItemsSource {
            get {
                if (_ItemsSource == null && !DevExpress.Mvvm.ViewModelBase.IsInDesignMode) {
                    _Context = new NorthwindEntities();
                    _ItemsSource = _Context.Orders.ToList();
                }
                return _ItemsSource;
            }
        }
        [Command]
        public void ValidateRow(RowValidationArgs args) {
            var item = (Order)args.Item;
            if (args.IsNewItem)
                _Context.Orders.Add(item);
            _Context.SaveChanges();
        }
        [Command]
        public void ValidateRowDeletion(ValidateRowDeletionArgs args) {
            var item = (Order)args.Items.Single();
            _Context.Orders.Remove(item);
            _Context.SaveChanges();
        }
        [Command]
        public void DataSourceRefresh(DataSourceRefreshArgs args) {
            _ItemsSource = null;
            _Context = null;
            RaisePropertyChanged(nameof(ItemsSource));
        }
    }
}

这个代码启动CRUD operations ，为每一个数据源字段生成行，然后显示所有行数在fixed summary panel.

7、运行如下：