Email validation in Microsoft Dynamics AX 2012

The below code is used to validate the Email Id.

public boolean validateField(FieldId _fieldIdToCheck)
{
    boolean   ret;
    Str           emailPattern = @"\b[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}\b";
   
    System.Text.RegularExpressions.Match  myMatch;

    ret = super(_fieldIdToCheck);

    if (_fieldIdToCheck == fieldNum(PracticeDemo, EmailID))
    {
        myMatch = System.Text.RegularExpressions.Regex::Match(this.EmailID, emailPattern);

    if (!myMatch.get_Success())
{
            ret = checkFailed(strFmt("%1 is not an valid email id ", this.EmailID));
}
    }

    return ret;
}