修改注册控件的密码验证等问题

     <membership>
            <providers>
                    <remove name="AspNetSqlMembershipProvider" /><!--此行的作用是清除前面的定义，重新定义，以免冲突-->
                <add name="AspNetSqlMembershipProvider"
                    type="System.Web.Security.SqlMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
                    connectionStringName="LocalSqlServer"
                    enablePasswordRetrieval="false"
                    enablePasswordReset="true"
                    requiresQuestionAndAnswer="true"
                    applicationName="/"
                    requiresUniqueEmail="false"
                    passwordFormat="Hashed"
                    maxInvalidPasswordAttempts="5"
                    minRequiredPasswordLength="6"
                    minRequiredNonalphanumericCharacters="0"
                    passwordAttemptWindow="10"
                    passwordStrengthRegularExpression="" />
            </providers>
        </membership>