ViewDataDictionary 构造函数

定义

命名空间:

Microsoft.AspNetCore.Mvc.ViewFeatures

程序集:

Microsoft.AspNetCore.Mvc.ViewFeatures.dll

包:

Microsoft.AspNetCore.App.Ref v8.0.0

重载

ViewDataDictionary(ViewDataDictionary)	完全基于现有实例 ViewDataDictionary 初始化 类的新实例。
ViewDataDictionary(IModelMetadataProvider, ModelStateDictionary)	初始化 ViewDataDictionary 类的新实例。
ViewDataDictionary(IModelMetadataProvider, Type)	初始化 ViewDataDictionary 类的新实例。
ViewDataDictionary(ViewDataDictionary, Type)	部分基于现有实例 ViewDataDictionary 初始化 类的新实例。
ViewDataDictionary(IModelMetadataProvider, ModelStateDictionary, Type)	初始化 ViewDataDictionary 类的新实例。
ViewDataDictionary(ViewDataDictionary, Object, Type)	部分基于现有实例 ViewDataDictionary 初始化 类的新实例。 此构造函数小心避免在 为 null时model可能会引发异常SetModel(Object)。

ViewDataDictionary(ViewDataDictionary)

完全基于现有实例 ViewDataDictionary 初始化 类的新实例。

public:
 ViewDataDictionary(Microsoft::AspNetCore::Mvc::ViewFeatures::ViewDataDictionary ^ source);

public ViewDataDictionary (Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary source);

new Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary : Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary -> Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary

Public Sub New (source As ViewDataDictionary)

参数

source

ViewDataDictionary

ViewDataDictionary 要从中复制初始值的实例。

注解

用于复制ViewDataDictionary实例和声明TypeModel的 不会更改，例如从ViewDataDictionary<TModel>实例复制到基ViewDataDictionary实例时。

不应将此构造函数用于可能设置为与 声明类型source不兼容的值的任何上下文Model中。

ViewDataDictionary(IModelMetadataProvider, ModelStateDictionary)

初始化 ViewDataDictionary 类的新实例。

public:
 ViewDataDictionary(Microsoft::AspNetCore::Mvc::ModelBinding::IModelMetadataProvider ^ metadataProvider, Microsoft::AspNetCore::Mvc::ModelBinding::ModelStateDictionary ^ modelState);

public ViewDataDictionary (Microsoft.AspNetCore.Mvc.ModelBinding.IModelMetadataProvider metadataProvider, Microsoft.AspNetCore.Mvc.ModelBinding.ModelStateDictionary modelState);

new Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary : Microsoft.AspNetCore.Mvc.ModelBinding.IModelMetadataProvider * Microsoft.AspNetCore.Mvc.ModelBinding.ModelStateDictionary -> Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary

Public Sub New (metadataProvider As IModelMetadataProvider, modelState As ModelStateDictionary)

参数

metadataProvider

IModelMetadataProvider

IModelMetadataProvider 用于创建 ModelExplorer 实例的实例。

modelState

ModelStateDictionary

ModelStateDictionary 此范围的实例。

注解

在为新的顶级范围创建 ViewDataDictionary 时使用。

ViewDataDictionary(IModelMetadataProvider, Type)

初始化 ViewDataDictionary 类的新实例。

protected:
 ViewDataDictionary(Microsoft::AspNetCore::Mvc::ModelBinding::IModelMetadataProvider ^ metadataProvider, Type ^ declaredModelType);

protected ViewDataDictionary (Microsoft.AspNetCore.Mvc.ModelBinding.IModelMetadataProvider metadataProvider, Type declaredModelType);

new Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary : Microsoft.AspNetCore.Mvc.ModelBinding.IModelMetadataProvider * Type -> Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary

Protected Sub New (metadataProvider As IModelMetadataProvider, declaredModelType As Type)

参数

metadataProvider

IModelMetadataProvider

IModelMetadataProvider 用于创建 ModelExplorer 实例的实例。

declaredModelType

Type

Type预期值的 。Model 用于设置 ModelMetadata。

注解

在为新的顶级范围创建派生 ViewDataDictionary 时使用。

ViewDataDictionary(ViewDataDictionary, Type)

部分基于现有实例 ViewDataDictionary 初始化 类的新实例。

protected:
 ViewDataDictionary(Microsoft::AspNetCore::Mvc::ViewFeatures::ViewDataDictionary ^ source, Type ^ declaredModelType);

protected ViewDataDictionary (Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary source, Type declaredModelType);

new Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary : Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary * Type -> Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary

Protected Sub New (source As ViewDataDictionary, declaredModelType As Type)

参数

source

ViewDataDictionary

ViewDataDictionary 要从中复制初始值的实例。

declaredModelType

Type

Type预期值的 。Model 用于设置 ModelMetadata。

注解

在复制 ViewDataDictionary 实例和声明 ModelType 的新实例时使用，但 Model 应从现有实例复制，例如从基 ViewDataDictionary 实例复制到 ViewDataDictionary<TModel> 实例时。

如果 为非null 且与 不兼容，则此构造函数可能throw。declaredModelTypesource.Model 将 传递给 model: null 以 ViewDataDictionary(ViewDataDictionary, Object, Type) 忽略 source.Model。

ViewDataDictionary(IModelMetadataProvider, ModelStateDictionary, Type)

初始化 ViewDataDictionary 类的新实例。

protected:
 ViewDataDictionary(Microsoft::AspNetCore::Mvc::ModelBinding::IModelMetadataProvider ^ metadataProvider, Microsoft::AspNetCore::Mvc::ModelBinding::ModelStateDictionary ^ modelState, Type ^ declaredModelType);

protected ViewDataDictionary (Microsoft.AspNetCore.Mvc.ModelBinding.IModelMetadataProvider metadataProvider, Microsoft.AspNetCore.Mvc.ModelBinding.ModelStateDictionary modelState, Type declaredModelType);

new Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary : Microsoft.AspNetCore.Mvc.ModelBinding.IModelMetadataProvider * Microsoft.AspNetCore.Mvc.ModelBinding.ModelStateDictionary * Type -> Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary

Protected Sub New (metadataProvider As IModelMetadataProvider, modelState As ModelStateDictionary, declaredModelType As Type)

参数

metadataProvider

IModelMetadataProvider

IModelMetadataProvider 用于创建 ModelExplorer 实例的实例。

modelState

ModelStateDictionary

ModelStateDictionary 此范围的实例。

declaredModelType

Type

Type预期值的 。Model 用于设置 ModelMetadata。

注解

在为新的顶级范围创建派生 ViewDataDictionary 时使用。

ViewDataDictionary(ViewDataDictionary, Object, Type)

部分基于现有实例 ViewDataDictionary 初始化 类的新实例。 此构造函数小心避免在 为 null时model可能会引发异常SetModel(Object)。

protected:
 ViewDataDictionary(Microsoft::AspNetCore::Mvc::ViewFeatures::ViewDataDictionary ^ source, System::Object ^ model, Type ^ declaredModelType);

protected ViewDataDictionary (Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary source, object? model, Type declaredModelType);

new Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary : Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary * obj * Type -> Microsoft.AspNetCore.Mvc.ViewFeatures.ViewDataDictionary

Protected Sub New (source As ViewDataDictionary, model As Object, declaredModelType As Type)

参数

source

ViewDataDictionary

ViewDataDictionary 要从中复制初始值的实例。

model

Object

属性的值 Model 。

declaredModelType

Type

Type预期值的 。Model 用于设置 ModelMetadata。

注解

在复制 ViewDataDictionary 实例和新实例的声明 ModelType 和 Model 已知时使用。

如果 为非null 且与 不兼容，则此构造函数可能throw。declaredModelTypemodel