implement sms two factor authentication in asp.core application code example

Example: Password strength: Strong .net core sms

<ajaxToolkit:PasswordStrength ID="PS" runat="server"
    TargetControlID="TextBox1"
    DisplayPosition="RightSide"
    StrengthIndicatorType="Text"
    PreferredPasswordLength="10"
    PrefixText="Strength:"
    TextCssClass="TextIndicator_TextBox1"
    MinimumNumericCharacters="0"
    MinimumSymbolCharacters="0"
    RequiresUpperAndLowerCaseCharacters="false"
    TextStrengthDescriptions="Very Poor;Weak;Average;Strong;Excellent"
    TextStrengthDescriptionStyles="cssClass1;cssClass2;cssClass3;cssClass4;cssClass5
    CalculationWeightings="50;15;15;20" />