Validator.TryValidateObject Method

Definition

Namespace:

System.ComponentModel.DataAnnotations

Assembly:

System.ComponentModel.Annotations.dll

Determines whether the specified object is valid.

Overloads

TryValidateObject(Object, ValidationContext, ICollection<ValidationResult>)	Determines whether the specified object is valid using the validation context and validation results collection.
TryValidateObject(Object, ValidationContext, ICollection<ValidationResult>, Boolean)	Determines whether the specified object is valid using the validation context, validation results collection, and a value that specifies whether to validate all properties.

TryValidateObject(Object, ValidationContext, ICollection<ValidationResult>)

Source:

Validator.cs

Determines whether the specified object is valid using the validation context and validation results collection.

public:
 static bool TryValidateObject(System::Object ^ instance, System::ComponentModel::DataAnnotations::ValidationContext ^ validationContext, System::Collections::Generic::ICollection<System::ComponentModel::DataAnnotations::ValidationResult ^> ^ validationResults);

public static bool TryValidateObject (object instance, System.ComponentModel.DataAnnotations.ValidationContext validationContext, System.Collections.Generic.ICollection<System.ComponentModel.DataAnnotations.ValidationResult>? validationResults);

static member TryValidateObject : obj * System.ComponentModel.DataAnnotations.ValidationContext * System.Collections.Generic.ICollection<System.ComponentModel.DataAnnotations.ValidationResult> -> bool

Public Shared Function TryValidateObject (instance As Object, validationContext As ValidationContext, validationResults As ICollection(Of ValidationResult)) As Boolean

Parameters

instance

Object

The object to validate.

validationContext

ValidationContext

The context that describes the object to validate.

validationResults

ICollection<ValidationResult>

A collection to hold each failed validation.

Returns

Boolean

true if the object validates; otherwise, false.

Exceptions

ArgumentNullException

instance is null.

ArgumentException

instance doesn't match the ObjectInstanceon validationContext.

Remarks

This method evaluates each ValidationAttribute instance that is attached to the object type. It also checks whether each property that is marked with RequiredAttribute is provided. It does not recursively validate the property values of the object.

TryValidateObject(Object, ValidationContext, ICollection<ValidationResult>, Boolean)

Source:

Validator.cs

Determines whether the specified object is valid using the validation context, validation results collection, and a value that specifies whether to validate all properties.

public:
 static bool TryValidateObject(System::Object ^ instance, System::ComponentModel::DataAnnotations::ValidationContext ^ validationContext, System::Collections::Generic::ICollection<System::ComponentModel::DataAnnotations::ValidationResult ^> ^ validationResults, bool validateAllProperties);

public static bool TryValidateObject (object instance, System.ComponentModel.DataAnnotations.ValidationContext validationContext, System.Collections.Generic.ICollection<System.ComponentModel.DataAnnotations.ValidationResult>? validationResults, bool validateAllProperties);

static member TryValidateObject : obj * System.ComponentModel.DataAnnotations.ValidationContext * System.Collections.Generic.ICollection<System.ComponentModel.DataAnnotations.ValidationResult> * bool -> bool

Public Shared Function TryValidateObject (instance As Object, validationContext As ValidationContext, validationResults As ICollection(Of ValidationResult), validateAllProperties As Boolean) As Boolean

Parameters

instance

Object

The object to validate.

validationContext

ValidationContext

The context that describes the object to validate.

validationResults

ICollection<ValidationResult>

A collection to hold each failed validation.

validateAllProperties

Boolean

true to validate all properties; if false, only required attributes are validated.

Returns

Boolean

true if the object validates; otherwise, false.

Exceptions

ArgumentNullException

instance is null.

ArgumentException

instance doesn't match theObjectInstanceon validationContext.

Remarks

This method evaluates each ValidationAttribute instance that is attached to the object type. It also checks whether each property that is marked with RequiredAttribute is provided. It validates the property values of the object if validateAllProperties is true but does not recursively validate properties of the objects returned by the properties.