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Sign inValidationAttribute.IsValid Method
Definition
Important
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Checks whether the specified object is valid.
Overloads
| IsValid(Object) |
Determines whether the specified value of the object is valid. |
| IsValid(Object, ValidationContext) |
Validates the specified value with respect to the current validation attribute. |
- Source:
- ValidationAttribute.cs
- Source:
- ValidationAttribute.cs
- Source:
- ValidationAttribute.cs
- Source:
- ValidationAttribute.cs
Determines whether the specified value of the object is valid.
public:
virtual bool IsValid(System::Object ^ value);public:
abstract bool IsValid(System::Object ^ value);C#
public virtual bool IsValid(object value);C#
public virtual bool IsValid(object? value);C#
public abstract bool IsValid(object value);abstract member IsValid : obj -> bool
override this.IsValid : obj -> boolabstract member IsValid : obj -> boolPublic Overridable Function IsValid (value As Object) As BooleanPublic MustOverride Function IsValid (value As Object) As BooleanParameters
- value
- Object
The value of the object to validate.
Returns
true if the specified value is valid; otherwise, false.
Exceptions
The current attribute is malformed.
Neither overload of IsValid has been implemented by a derived class.
Remarks
If you inherit from the ValidationAttribute class, you must implement the validation logic in this method.
Applies to
.NET 10 and other versions
| Product | Versions |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0 (package-provided), 2.1 (package-provided) |
| UWP | 10.0 |
- Source:
- ValidationAttribute.cs
- Source:
- ValidationAttribute.cs
- Source:
- ValidationAttribute.cs
- Source:
- ValidationAttribute.cs
Validates the specified value with respect to the current validation attribute.
protected:
virtual System::ComponentModel::DataAnnotations::ValidationResult ^ IsValid(System::Object ^ value, System::ComponentModel::DataAnnotations::ValidationContext ^ validationContext);C#
protected virtual System.ComponentModel.DataAnnotations.ValidationResult IsValid(object value, System.ComponentModel.DataAnnotations.ValidationContext validationContext);C#
protected virtual System.ComponentModel.DataAnnotations.ValidationResult? IsValid(object? value, System.ComponentModel.DataAnnotations.ValidationContext validationContext);abstract member IsValid : obj * System.ComponentModel.DataAnnotations.ValidationContext -> System.ComponentModel.DataAnnotations.ValidationResult
override this.IsValid : obj * System.ComponentModel.DataAnnotations.ValidationContext -> System.ComponentModel.DataAnnotations.ValidationResultProtected Overridable Function IsValid (value As Object, validationContext As ValidationContext) As ValidationResultParameters
- value
- Object
The value to validate.
- validationContext
- ValidationContext
The context information about the validation operation.
Returns
An instance of the ValidationResult class.
Exceptions
The current attribute is malformed.
IsValid(Object, ValidationContext) has not been implemented by a derived class.
See also
Applies to
.NET 10 and other versions
| Product | Versions |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0 (package-provided), 2.1 (package-provided) |
| UWP | 10.0 |