IsValid() [1/2]

override bool System.ComponentModel.DataAnnotations.RegularExpressionAttribute.IsValid ( object? value )

inlinevirtual

Reimplemented from System.ComponentModel.DataAnnotations.ValidationAttribute.

Definition at line 22 of file RegularExpressionAttribute.cs.

    {
        SetupRegex();
        string text = Convert.ToString(value, CultureInfo.CurrentCulture);
        if (string.IsNullOrEmpty(text))
        {
            return true;
        }
        Match match = Regex.Match(text);
        if (match.Success && match.Index == 0)
        {
            return match.Length == text.Length;
        }
        return false;
    }

References System.Globalization.CultureInfo.CurrentCulture, System.match, System.Text.RegularExpressions.Regex.Match(), System.ComponentModel.DataAnnotations.RegularExpressionAttribute.SetupRegex(), System.text, System.Convert.ToString(), and System.value.