WPF MVVM模式开发简明实现教程 7 DevExpress MVVM

WPF MVVM模式开发实现简明教程 1 开篇简介 

WPF MVVM模式开发实现简明教程 2 初识 INotifyPropertyChanged

WPF MVVM模式开发简明实现教程 3 事件绑定   

WPF MVVM模式开发实现简明教程 3-1 BaseCommand  

WPF MVVM模式开发实现简明教程 4 ViewModelBase  

WPF MVVM模式开发简明实现教程 5 使用MultiValueConverter进行多参数事件绑定 

WPF MVVM模式开发简明实现教程 6 其他绑定  

WPF MVVM模式开发简明实现教程 7 DevExpress MVVM  

WPF MVVM模式开发简明实现教程 8 完结 附全部代码  

 

可以看到比原生的用法简单很多，POCO View 结合 DXCommand很方便

自己其实也可以实现

 

ViewModelBase

View

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1 2	<Button Command="{Binding LoginCommand}">Login</Button>         <TextBlock Text="{Binding Status}" />

ViewModel

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public string Status {             get { return GetValue<string>(); }             private set { SetValue(value); }         }           [Command]         public void Login() {             Status = "User: " + UserName;         }         public bool CanLogin() {             return !string.IsNullOrEmpty(UserName);         }

　

POCO View

View

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1 2	<Button Command="{Binding LoginCommand}">Login</Button>         <TextBlock Text="{Binding Status}" />

ViewModel

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public virtual string Status { get; protected set; }   // LoginCommand will be created for the Login and CanLogin methods: public void Login() {     Status = "User: " + UserName; } public bool CanLogin() {     return !string.IsNullOrEmpty(UserName); }

　　

DelegateCommand

view

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<dxlc:LayoutControl Orientation="Vertical" VerticalAlignment="Top">         <dxlc:LayoutGroup Header="Command without parameter" Orientation="Vertical" View="GroupBox">             <CheckBox IsChecked="{Binding CanExecuteSaveCommand}" Content="Can Save"/>             <Button Command="{Binding SaveCommand}">Save</Button>         </dxlc:LayoutGroup>         <dxlc:LayoutGroup Header="Command with parameter" Orientation="Vertical" View="GroupBox">             <dxe:TextEdit Text="{Binding FileName, UpdateSourceTrigger=PropertyChanged}" NullText="Enter file name"/>             <Button Command="{Binding OpenCommand}" CommandParameter="{Binding FileName}">Open</Button>         </dxlc:LayoutGroup>     </dxlc:LayoutControl>

ViewModel

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public ICommand SaveCommand { get; private set; }         public ICommand OpenCommand { get; private set; }           public DelegateCommandsViewModel() {             CanExecuteSaveCommand = true;               SaveCommand = new DelegateCommand(                 () => MessageBox.Show("Action: Save"),                 () => CanExecuteSaveCommand);               OpenCommand = new DelegateCommand<string>(                 fileName => MessageBox.Show(string.Format("Action: Open {0}", FileName)),                 fileName => !string.IsNullOrEmpty(fileName));         }           public bool CanExecuteSaveCommand {             get { return GetValue<bool>(); }             set { SetValue(value); }         }         public string FileName {             get { return GetValue<string>(); }             set { SetValue(value); }         }

　　

DXCommand

View

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1	<dxg:GridControl MouseDoubleClick="{DXEvent 'GridControl_MouseDoubleClick(@sender, @args)'}" >

　　

ViewModel

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public void GridControl_MouseDoubleClick(object sender, MouseButtonEventArgs e)         {             var row = (sender as GridControl).CurrentItem;             if (!(row is CreateIncidentInfomationModel createIncidentInfoModel))             {                 return;             }           }