IsValid() [1/2]

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

inlinevirtual

Reimplemented from System.ComponentModel.DataAnnotations.DataTypeAttribute.

Definition at line 12 of file UrlAttribute.cs.

    {
        if (value == null)
        {
            return true;
        }
        if (value is string text)
        {
            if (!text.StartsWith("http://", StringComparison.OrdinalIgnoreCase) && !text.StartsWith("https://", StringComparison.OrdinalIgnoreCase))
            {
                return text.StartsWith("ftp://", StringComparison.OrdinalIgnoreCase);
            }
            return true;
        }
        return false;
    }

References System.text, and System.value.