ValidationContext 构造函数

定义

命名空间:: System.ComponentModel.DataAnnotations

程序集:: System.ComponentModel.Annotations.dll, System.ComponentModel.DataAnnotations.dll

程序集:: System.ComponentModel.Annotations.dll

程序集:: System.ComponentModel.DataAnnotations.dll

重要

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初始化 ValidationContext 类的新实例。

重载

名称	说明
ValidationContext(Object)	使用指定的对象实例初始化类的新实例 ValidationContext 。
ValidationContext(Object, IDictionary<Object,Object>)	使用指定的对象和可选的属性包初始化类的新实例 ValidationContext 。
ValidationContext(Object, IServiceProvider, IDictionary<Object,Object>)	使用服务使用者的服务提供程序和字典初始化类的新实例 ValidationContext 。
ValidationContext(Object, String, IServiceProvider, IDictionary<Object,Object>)	为具有可选属性包的给定对象实例构造一ValidationContext`displayName`个可选`serviceProvider`属性包`items`。

ValidationContext(Object)

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

使用指定的对象实例初始化类的新实例 ValidationContext 。

public:
 ValidationContext(System::Object ^ instance);

public ValidationContext(object instance);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Constructing a ValidationContext without a display name is not trim-safe because it uses reflection to discover the type of the instance being validated in order to resolve the DisplayNameAttribute when a display name is not provided.")]
public ValidationContext(object instance);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered.")]
public ValidationContext(object instance);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered and the Type's properties can be trimmed.")]
public ValidationContext(object instance);

new System.ComponentModel.DataAnnotations.ValidationContext : obj -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Constructing a ValidationContext without a display name is not trim-safe because it uses reflection to discover the type of the instance being validated in order to resolve the DisplayNameAttribute when a display name is not provided.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered and the Type's properties can be trimmed.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj -> System.ComponentModel.DataAnnotations.ValidationContext

Public Sub New (instance As Object)

参数

instance: Object

要验证的对象实例。它不能 null。

属性: RequiresUnreferencedCodeAttribute

例外

ArgumentNullException

instance 是 null。

适用于

ValidationContext(Object, IDictionary<Object,Object>)

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

使用指定的对象和可选的属性包初始化类的新实例 ValidationContext 。

public:
 ValidationContext(System::Object ^ instance, System::Collections::Generic::IDictionary<System::Object ^, System::Object ^> ^ items);

public ValidationContext(object instance, System.Collections.Generic.IDictionary<object,object> items);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Constructing a ValidationContext without a display name is not trim-safe because it uses reflection to discover the type of the instance being validated in order to resolve the DisplayNameAttribute when a display name is not provided.")]
public ValidationContext(object instance, System.Collections.Generic.IDictionary<object,object?>? items);

public ValidationContext(object instance, System.Collections.Generic.IDictionary<object,object?>? items);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered.")]
public ValidationContext(object instance, System.Collections.Generic.IDictionary<object,object?>? items);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered and the Type's properties can be trimmed.")]
public ValidationContext(object instance, System.Collections.Generic.IDictionary<object,object?>? items);

new System.ComponentModel.DataAnnotations.ValidationContext : obj * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Constructing a ValidationContext without a display name is not trim-safe because it uses reflection to discover the type of the instance being validated in order to resolve the DisplayNameAttribute when a display name is not provided.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered and the Type's properties can be trimmed.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

Public Sub New (instance As Object, items As IDictionary(Of Object, Object))

参数

instance: Object

要验证的对象实例。它不能 null。

items: IDictionary<Object,Object>

一组可选的键/值对，供使用者使用。

属性: RequiresUnreferencedCodeAttribute

例外

ArgumentNullException

instance 是 null。

注解

items如果是null，则会创建一个空字典。如果 items 不是 null，则将键/值对集复制到新字典中，从而阻止使用者修改原始字典。

适用于

ValidationContext(Object, IServiceProvider, IDictionary<Object,Object>)

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

Source:: ValidationContext.cs

使用服务使用者的服务提供程序和字典初始化类的新实例 ValidationContext 。

public:
 ValidationContext(System::Object ^ instance, IServiceProvider ^ serviceProvider, System::Collections::Generic::IDictionary<System::Object ^, System::Object ^> ^ items);

public ValidationContext(object instance, IServiceProvider serviceProvider, System.Collections.Generic.IDictionary<object,object> items);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Constructing a ValidationContext without a display name is not trim-safe because it uses reflection to discover the type of the instance being validated in order to resolve the DisplayNameAttribute when a display name is not provided.")]
public ValidationContext(object instance, IServiceProvider? serviceProvider, System.Collections.Generic.IDictionary<object,object?>? items);

public ValidationContext(object instance, IServiceProvider? serviceProvider, System.Collections.Generic.IDictionary<object,object?>? items);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered.")]
public ValidationContext(object instance, IServiceProvider? serviceProvider, System.Collections.Generic.IDictionary<object,object?>? items);

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered and the Type's properties can be trimmed.")]
public ValidationContext(object instance, IServiceProvider? serviceProvider, System.Collections.Generic.IDictionary<object,object?>? items);

new System.ComponentModel.DataAnnotations.ValidationContext : obj * IServiceProvider * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Constructing a ValidationContext without a display name is not trim-safe because it uses reflection to discover the type of the instance being validated in order to resolve the DisplayNameAttribute when a display name is not provided.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj * IServiceProvider * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj * IServiceProvider * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("The Type of instance cannot be statically discovered and the Type's properties can be trimmed.")>]
new System.ComponentModel.DataAnnotations.ValidationContext : obj * IServiceProvider * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

Public Sub New (instance As Object, serviceProvider As IServiceProvider, items As IDictionary(Of Object, Object))

参数

instance: Object

要验证的对象。此参数是必需的。

serviceProvider: IServiceProvider

实现 IServiceProvider 接口的对象。此参数是可选的。

items: IDictionary<Object,Object>

要提供给服务使用者的键/值对字典。此参数是可选的。

属性: RequiresUnreferencedCodeAttribute

例外

ArgumentNullException

instance 是 null。

注解

该 serviceProvider 参数表示方法可用于 GetService 执行自定义验证的服务。

如果参数 items 为 null，则会创建一个空字典。如果参数不是 null，则键/值对集将复制到新的字典中，从而阻止服务使用者修改原始字典。

适用于

ValidationContext(Object, String, IServiceProvider, IDictionary<Object,Object>)

Source:: ValidationContext.cs

Source:: ValidationContext.cs

为具有可选属性包的给定对象实例构造一ValidationContextdisplayName个可选serviceProvider属性包items。

public:
 ValidationContext(System::Object ^ instance, System::String ^ displayName, IServiceProvider ^ serviceProvider, System::Collections::Generic::IDictionary<System::Object ^, System::Object ^> ^ items);

public ValidationContext(object instance, string displayName, IServiceProvider? serviceProvider, System.Collections.Generic.IDictionary<object,object?>? items);

new System.ComponentModel.DataAnnotations.ValidationContext : obj * string * IServiceProvider * System.Collections.Generic.IDictionary<obj, obj> -> System.ComponentModel.DataAnnotations.ValidationContext

Public Sub New (instance As Object, displayName As String, serviceProvider As IServiceProvider, items As IDictionary(Of Object, Object))

参数

instance: Object

正在验证的对象实例。它不能 null。

displayName: String

与对象实例关联的显示名称。

serviceProvider: IServiceProvider

在调用时GetService(Type)使用可选IServiceProvider。

null如果是，GetService(Type)将始终返回null。

items: IDictionary<Object,Object>

可选的键/值对集，供使用者通过 Items。

如果 null为空字典，则会创建一个空字典。 null否则，键/值对集将复制到新字典中，防止使用者修改原始字典。

例外

ArgumentNullException

何时 instance 为 null

注解

此构造函数是剪裁安全的，因为它不使用反射来解析 instance 类型以支持设置 DisplayName。

适用于

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