如何在ASP.NET Membership Cookie中存储自定义数据

在ASP.NET Membership Cookie中存储自定义数据，可以通过以下步骤实现：

1. 创建自定义MembershipUser类，继承自MembershipUser类，并添加自定义属性：public class CustomMembershipUser : MembershipUser { public string CustomData { get; set; } public CustomMembershipUser(string providerName, string name, object providerUserKey, string email, string passwordQuestion, string comment, bool isApproved, bool isLockedOut, DateTime creationDate, DateTime lastLoginDate, DateTime lastActivityDate, DateTime lastPasswordChangedDate, DateTime lastLockoutDate) : base(providerName, name, providerUserKey, email, passwordQuestion, comment, isApproved, isLockedOut, creationDate, lastLoginDate, lastActivityDate, lastPasswordChangedDate, lastLockoutDate) { } }public class CustomMembershipProvider : SqlMembershipProvider { public override MembershipUser GetUser(string username, bool userIsOnline) { var user = base.GetUser(username, userIsOnline); var customUser = user as CustomMembershipUser; if (customUser != null) { // 从数据库或其他地方获取自定义数据，并设置到CustomData属性中 customUser.CustomData = "Custom data for " + username; } return customUser; } public override bool ValidateUser(string username, string password) { // 验证用户名和密码 // ... // 如果验证成功，将自定义数据存储到MembershipUser中 var user = (CustomMembershipUser)GetUser(username, true); user.CustomData = "Custom data for " + username; return true; } }<membership defaultProvider="CustomMembershipProvider"> <providers> <clear /> <add name="CustomMembershipProvider" type="CustomMembershipProvider" connectionStringName="ApplicationServices" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" requiresUniqueEmail="false" maxInvalidPasswordAttempts="5" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" passwordAttemptWindow="10" applicationName="/" /> </providers> </membership>var user = (CustomMembershipUser)Membership.GetUser(); user.CustomData = "Custom data for " + user.UserName;var user = (CustomMembershipUser)Membership.GetUser(); var customData = user.CustomData;通过以上步骤，可以在ASP.NET Membership Cookie中存储自定义数据。
2. 创建自定义MembershipProvider类，继承自SqlMembershipProvider类，并重写ValidateUser、GetUser等方法，使用自定义MembershipUser类：
3. 在web.config中配置自定义MembershipProvider：
4. 在需要存储自定义数据的地方，将自定义数据添加到MembershipUser中：
5. 在需要读取自定义数据的地方，从MembershipUser中获取自定义数据：