DevExpress WinForm控件入门指南：标准DevExpress服务 – DialogService

DialogService

允许您显示对话框。

接口

IDialogService

托管控件

• XtraForm
• FlyoutDialog
• RibbonForm

全局注册

C#

MVVMContext.RegisterXtraDialogService();MVVMContext.RegisterFlyoutDialogService();MVVMContext.RegisterRibbonDialogService();

VB.NET

MVVMContext.RegisterXtraDialogService()MVVMContext.RegisterFlyoutDialogService()MVVMContext.RegisterRibbonDialogService()

DevExpress MVVM 框架自动调用 RegisterXtraDialogService 方法。

本地注册

C#

mvvmContext1.RegisterService(DialogService.CreateXtraDialogService(this));mvvmContext1.RegisterService(DialogService.CreateFlyoutDialogService(this));mvvmContext1.RegisterService(DialogService.CreateRibbonDialogService(this));mvvmContext1.RegisterService(DialogService.Create(this, DefaultDialogServiceType.RibbonDialog));

VB.NET

mvvmContext1.RegisterService(DialogService.CreateXtraDialogService(Me))mvvmContext1.RegisterService(DialogService.CreateFlyoutDialogService(Me))mvvmContext1.RegisterService(DialogService.CreateRibbonDialogService(Me))mvvmContext1.RegisterService(DialogService.Create(Me, DefaultDialogServiceType.RibbonDialog))

Create() 方法

DialogService 的所有‘Create…’方法都需要一个拥有该服务的视图，如果您传递 null 而不是 View，框架会尝试定位适当的窗口（在大多数情况下，使用激活窗口）。

• Create(IWin32Window owner, DefaultDialogServiceType type) – 使用 DefaultDialogServiceType 枚举器值来确定要创建的服务类型。
• CreateXtraDialogService(IWin32Window owner) – 创建一个显示skinnable DevExpress 对话框的服务。
• CreateFlyoutDialogService(IWin32Window owner) – 创建一个显示FlyoutDialog 的服务。
• CreateRibbonDialogService(IWin32Window owner) – 创建一个将带有嵌入式RibbonControls的RibbonForms 显示为对话框的服务，对话框按钮显示为功能区项目。
• Create(IWin32Window owner, string title, Func<IDialogForm> factoryMethod) – 允许您注册管理自定义对话框（实现 IDialogForm 接口的对象）的服务。

C#

DialogService.Create(ownerView1, "A custom dialog", ()=> new CustomDialogClass());

VB.NET

DialogService.Create(ownerView1, "A custom dialog", Function() New CustomDialogClass())

• DialogService Create(IWin32Window owner, string title, IDialogFormFactory factory) – 接受创建自定义对话框的工厂类。

公共服务方法

• ShowDialog – 六个扩展方法，显示具有特定外观和内容的对话框。

C#

public void FindCustomer() {if(DialogService.ShowDialog(MessageButton.OKCancel, "Find Customer", findDialogViewModel) == MessageResult.OK) {// do something}}

VB.NET

Public Sub FindCustomer()If DialogService.ShowDialog(MessageButton.OKCancel, "Find Customer", findDialogViewModel) = MessageResult.OK Then' do somethingEnd IfEnd Sub

这些重载允许您用自定义 UICommand 对象替换默认对话框按钮。 为此，请将自定义命令的 Id 或 Tag 属性用作 MessageResult 或 DialogResult 值。

C#

public void FindCustomer() {var findDialogViewModel = FindDialogViewModel.Create();findDialogViewModel.SetParentViewModel(this);var commands = new List<UICommand>{// Button with custom command attachednew UICommand {Id = "Find",Caption = "Find",Command = new DelegateCommand(() =>{// . . . implement the Find command here}),IsDefault = true,IsCancel = false,Tag = DialogResult.OK},// standard button caption customizationnew UICommand {Caption = "Cancel Find",Tag = DialogResult.Cancel}};DialogService.ShowDialog(commands, "Find Customer", "FindDialogView", SelectedEntity, findDialogViewModel);}

VB.NET

Public Sub FindCustomer()Dim findDialogViewModel = FindDialogViewModel.Create()findDialogViewModel.SetParentViewModel(Me)Dim commands = New List(Of UICommand) From {New UICommand With {.Id = "Find", .Caption = "Find", .Command = New DelegateCommand(Sub()End Sub), .IsDefault = True, .IsCancel = False, .Tag = DialogResult.OK},New UICommand With {.Caption = "Cancel Find", .Tag = DialogResult.Cancel}}DialogService.ShowDialog(commands, "Find Customer", "FindDialogView", SelectedEntity, findDialogViewModel)End Sub

• DialogFormStyle – 允许您访问对话框并修改其外观设置。 例如，下面的代码说明了如何将粗体字体样式应用于弹出对话框按钮。

C#

var service = DialogService.CreateFlyoutDialogService(this);service.DialogFormStyle = (form) =>{FlyoutDialog dialog = form as FlyoutDialog;dialog.Properties.AppearanceButtons.FontStyleDelta = FontStyle.Bold;};

VB.NET

Dim service = DialogService.CreateFlyoutDialogService(Me)service.DialogFormStyle = Sub(form)Dim dialog As FlyoutDialog = TryCast(form, FlyoutDialog)dialog.Properties.AppearanceButtons.FontStyleDelta = FontStyle.BoldEnd Sub

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