try    {

         Membership.CreateUser ("name", "password", "mail");

       }

   catch  (MembershipCreateUserException e) 

        {

       // 失败

       switch (e.StatusCode)

          {

       case MembershipCreateStatus.DuplicateUsername:

       

       case MembershipCreateStatus.DuplicateEmail:

       

       case MembershipCreateStatus.InvalidPassword:

       

       default:

       

          }

       }

  if  (Membership.ValidateUser (UserName.Text, Password.Text))

     FormsAuthentication.RedirectFromLoginPage (UserName.Text,

       RememberMe.Checked);

  if  (Membership.ValidateUser (UserName.Text, Password.Text))  {

    MembershipUser user = Membership.GetUser (UserName.Text);

    user.Comment = "0"; //记录登录次数

    RedirectFromLoginPage (UserName.Text, RememberMe.Checked);

    }

     else   {

    MembershipUser user = Membership.GetUser (UserName.Text);

    if (user != null) {

        string count = Convert.ToInt32 (user.Comment) + 1;

         user.Comment = count.ToString ();

    }

}

  < configuration >

   < system .web >

     < membership  defaultProvider ="AspNetSqlProvider"   />

   </ system.web >

</ configuration >

   < membership >

   < providers >

     < remove  name ="AspNetSqlProvider"   />

     < add  name ="AspNetSqlProvider"

      type ="System.Web.Security.SqlMembershipProvider, System.Web, "

      connectionStringName ="RemoteSqlServer"

      enablePasswordRetrieval ="false"

      enablePasswordReset ="true"

      requiresQuestionAndAnswer ="false"

      applicationName ="/"

      requiresUniqueEmail ="false"

      passwordFormat ="Hashed"

      description ="Stores and retrieves membership data "

     />

   </ providers >

</ membership >

if  ( ! Roles.RoleExists ( " Developers " ))  {

    Roles.CreateRole ("Developers");

}

string  name  =  Membership.GetUser ().Username;

Roles.AddUserToRole (name,  " Developers " );

< configuration >

   < system .web >

     < roleManager  enabled ="true"   />

   </ system.web >

</ configuration >

< configuration >

   < system .web >

     < roleManager  enabled ="true"  cacheRolesInCookie ="true"   />

     <!--  Other roleManager attributes (and their defaults) include:

      cookieName=".ASPXROLES"         // Cookie name

      cookieTimeout="30"              // Cookie lifetime

      cookiePath="/"                  // Cookie path

      cookieRequireSSL="false"        // Restrict cookie to SSL?

      cookieSlidingExpiration="true"  // Renew expiring cookies?

      createPersistentCookie="false"  // Issue persistent cookie?

      cookieProtection="All" />       // Cookie protection level

     -->

   </ system.web >

</ configuration >

< configuration >

   < system .web >

     < roleManager  enabled ="true"  defaultProvider ="AspNetSqlRoleProvider"   />

   </ system.web >

</ configuration >

错误提示:

密码最短长度为 7，其中必须包含以下非字母数字字符: 1

解决方案:

收到以上的消息主要是在创建用户的时候产生的，对于用Asp.net 网站管理工具的时候创建用户也会产生。

主要是密码输入不符合要求，要改变上面的规定时，主要有两种方法:

1.所有的站点都改变。

     找到machine.config文件

< membership >

             < providers >

                 < 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 ="7"

                    minRequiredNonalphanumericCharacters ="1"

                    passwordAttemptWindow ="10"

                    passwordStrengthRegularExpression =""   />

             </ providers >

         </ membership >

里面有两个属性,一个是  minRequiredPasswordLength,意思是最长密码，默认为7另一个是minRequiredNonalphanumericCharacters，默认为1，意思是至少有一个非字母字符，只要把它改成0就可以了。

2.假如只是对某一个站点，只要修改web.config的值就ok了

修改如上，把上面的代码插入在 < system .web > 下面就ok了。

如要改成密码规则是"至少6个字符，而不用特殊字符的"，如下：

（注：一定要加上  < remove  name ="AspNetSqlMembershipProvider"   /> ,否则会提示"项“AspNetSqlMembershipProvider”已添加"的出错信息)

             < membership >

             < providers >

                     < remove  name ="AspNetSqlMembershipProvider"   />

                 < 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 >

本文转自高海东博客园博客，原文链接：http://www.cnblogs.com/ghd258/archive/2005/10/09/250802.html，如需转载请自行联系原作者