使用ASP .NET进行表单身份验证...............................

大家好

我正在研究基于表单的身份验证(表单身份验证)；

我的要求:

1).该编程涉及访问数据库和Web服务.在ASP.Net中使用表单身份验证.

2).能够使用用户名和密码创建新用户以访问该应用程序.将用户名的长度限制为最多5个，仅接受A-Z，a-z或0-9.
我无法达到此要求

我正在web.config文件中使用这种类型的示例代码，

Hi,all

i am working on form based authentication (forms authentication);

my requirements:

1). This programming deals with accessing a database and web services. Use Forms authentication in ASP.Net.

2).Ability to create new users with username and password to access the application. Restrict usernames to a length of up to 5 accepting only A-Z, a-z, or 0-9.
i am not able to achieve this requirement

i am using this type of sample code in web.config file ,

<pre lang="xml"><authentication mode="Forms">
      <forms loginUrl="~/Login.aspx"  protection="All" timeout="30" >
        <credentials passwordFormat ="Clear">
          <user name ="qwerty"  password="qwerty"/>
          <user name ="zxcv"  password="zxcv"/>
         
         </credentials>
      </forms>
        </authentication>