RegularExpressionAttribute.IsValid(Object) Method

Reference

Definition

Namespace:: System.ComponentModel.DataAnnotations

Assembly:: System.ComponentModel.Annotations.dll

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

Assembly:: System.ComponentModel.DataAnnotations.dll

Package:: System.ComponentModel.Annotations v5.0.0

Source:: RegularExpressionAttribute.cs

Source:: RegularExpressionAttribute.cs

Source:: RegularExpressionAttribute.cs

Important

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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

Dela via