RegularExpressionAttribute.IsValid(Object) Method

Reference

Definition

Namespace:: System.ComponentModel.DataAnnotations

Assemblies:: System.ComponentModel.Annotations.dll, System.ComponentModel.DataAnnotations.dll

Assembly:: System.ComponentModel.Annotations.dll

Assembly:: System.ComponentModel.DataAnnotations.dll

Package:: System.ComponentModel.Annotations v5.0.0

Source:: RegularExpressionAttribute.cs

Source:: RegularExpressionAttribute.cs

Source:: RegularExpressionAttribute.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Checks whether the value entered by the user matches the regular expression pattern.

public:
 override bool IsValid(System::Object ^ value);

public override bool IsValid(object value);

public override bool IsValid(object? value);

override this.IsValid : obj -> bool

Public Overrides Function IsValid (value As Object) As Boolean

Parameters

value: Object

The data field value to validate.

Returns

Boolean

true if validation is successful; otherwise, false.

Exceptions

ValidationException

The data field value did not match the regular expression pattern.

InvalidOperationException

The current attribute is ill-formed.

ArgumentException

Pattern is not a valid regular expression.

Remarks

This override performs the specific regular expression matching of value field.

Applies to

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

Share via