那些遇到过的问题

模糊'不实现'编译错误

Dig*_*805 -3 c# model-view-controller

我正在编写我的第一个MVC应用程序,并且正在创建一个新的MembershipProvider但是遇到了一些编译错误,这些错误在这个过程中是完全错误的.这是我的代码:

public class ProfileProvider : MembershipProvider
    {
        protected NameValueCollection Config = null;
        protected new String Name = null;
        protected String _PasswordStrengthRegularExpression = "";
        protected int _MinRequiredNonAlphanumericCharacters = 0;
        protected int _MinRequiredPasswordLength = 0;
        protected String _PasswordFormat = "";
        protected Boolean _RequiresUniqueEmail = false;
        protected int _PasswordAttemptWindow = 0;
        protected int _MaxInvalidPasswordAttempts = 0;
        protected String _ApplicationName = "";
        protected Boolean _RequiresQuestionAndAnswer = false;
        protected Boolean _EnabledPasswordReset = false;
        protected Boolean _EnablePasswordRetrieval = false;

        protected new String PasswordStrengthRegularExpression
        {
            get
            {
                return this._PasswordStrengthRegularExpression;
            }
            set
            {
                this._PasswordStrengthRegularExpression = value;
            }
        }
        public new int MinRequiredNonAlphanumericCharacters
        {
            get
            {
                return this._MinRequiredNonAlphanumericCharacters;
            }
            set
            {
                this._MinRequiredNonAlphanumericCharacters = value;
            }
        }
        public new int MinRequiredPasswordLength
        {
            get
            {
                return _MinRequiredPasswordLength;
            }
            set
            {
                this._MinRequiredPasswordLength = value;
            }
        }
        public new String PasswordFormat
        {
            get
            {
                return this._PasswordFormat;
            }
            set
            {
                this._PasswordFormat = value;
            }
        }
        public new Boolean RequiresUniqueEmail
        {
            get
            {
                return _RequiresUniqueEmail;
            }
            set
            {
                this._RequiresUniqueEmail = value;
            }
        }
        public new int PasswordAttemptWindow
        {
            get
            {
                return this._PasswordAttemptWindow;
            }
            set
            {
                this._PasswordAttemptWindow = value;
            }
        }
        public new int MaxInvalidPasswordAttempts
        {
            get
            {
                return this._MaxInvalidPasswordAttempts;
            }
            set
            {
                this._MaxInvalidPasswordAttempts = value;
            }
        }
        public new String ApplicationName
        {
            get
            {
                return this._ApplicationName;
            }
            set
            {
                this._ApplicationName = value;
            }
        }
        public new Boolean RequiresQuestionAndAnswer
        {
            get
            {
                return this._RequiresQuestionAndAnswer;
            }
            set
            {
                this._RequiresQuestionAndAnswer = value;
            }
        }
        public new Boolean EnablePasswordReset
        {
            get
            {
                return this._EnabledPasswordReset;
            }
            set
            {
                this._EnabledPasswordReset = value;
            }
        }
        public new Boolean EnablePasswordRetrieval
        {
            get
            {
                return this._EnablePasswordRetrieval;
            }
            set
            {
                this._EnablePasswordRetrieval = value;
            }
        }
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这是我的编译错误:

Error   5   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.RequiresUniqueEmail.get'    C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   10  'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.RequiresQuestionAndAnswer.get'  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   1   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.PasswordStrengthRegularExpression.get'  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   4   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.PasswordFormat.get' C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   6   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.PasswordAttemptWindow.get'  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   3   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.MinRequiredPasswordLength.get'  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   2   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.MinRequiredNonAlphanumericCharacters.get'   C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   7   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.MaxInvalidPasswordAttempts.get' C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   12  'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.EnablePasswordRetrieval.get'    C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   11  'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.EnablePasswordReset.get'    C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   8   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.ApplicationName.set'    C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   9   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.ApplicationName.get'    C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
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这些错误对我有意义; 就像'嘿假,你需要这些东西',但问题的事实是我确实添加了所说的东西.任何想法都表示赞赏.提前谢谢.

:::编辑:::

忘记提到我试图用'覆盖'替换'新'并最终在类似的船上.以下是我对此更改的错误:

Error   7   'EmptyMVC.Controllers.ProfileProvider.RequiresUniqueEmail.set': cannot override because 'System.Web.Security.MembershipProvider.RequiresUniqueEmail' does not have an overridable set accessor  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   78  13  EmptyMVC
Error   10  'EmptyMVC.Controllers.ProfileProvider.RequiresQuestionAndAnswer.set': cannot override because 'System.Web.Security.MembershipProvider.RequiresQuestionAndAnswer' does not have an overridable set accessor  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   122 13  EmptyMVC
Error   3   'EmptyMVC.Controllers.ProfileProvider.PasswordStrengthRegularExpression': cannot change access modifiers when overriding 'public' inherited member 'System.Web.Security.MembershipProvider.PasswordStrengthRegularExpression'   C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   28  35  EmptyMVC
Error   6   'EmptyMVC.Controllers.ProfileProvider.PasswordFormat': type must be 'System.Web.Security.MembershipPasswordFormat' to match overridden member 'System.Web.Security.MembershipProvider.PasswordFormat'   C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   61  32  EmptyMVC
Error   8   'EmptyMVC.Controllers.ProfileProvider.PasswordAttemptWindow.set': cannot override because 'System.Web.Security.MembershipProvider.PasswordAttemptWindow' does not have an overridable set accessor  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   89  13  EmptyMVC
Error   5   'EmptyMVC.Controllers.ProfileProvider.MinRequiredPasswordLength.set': cannot override because 'System.Web.Security.MembershipProvider.MinRequiredPasswordLength' does not have an overridable set accessor  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   56  13  EmptyMVC
Error   4   'EmptyMVC.Controllers.ProfileProvider.MinRequiredNonAlphanumericCharacters.set': cannot override because 'System.Web.Security.MembershipProvider.MinRequiredNonAlphanumericCharacters' does not have an overridable set accessor    C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   45  13  EmptyMVC
Error   9   'EmptyMVC.Controllers.ProfileProvider.MaxInvalidPasswordAttempts.set': cannot override because 'System.Web.Security.MembershipProvider.MaxInvalidPasswordAttempts' does not have an overridable set accessor    C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   100 13  EmptyMVC
Error   12  'EmptyMVC.Controllers.ProfileProvider.EnablePasswordRetrieval.set': cannot override because 'System.Web.Security.MembershipProvider.EnablePasswordRetrieval' does not have an overridable set accessor  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   144 13  EmptyMVC
Error   11  'EmptyMVC.Controllers.ProfileProvider.EnablePasswordReset.set': cannot override because 'System.Web.Security.MembershipProvider.EnablePasswordReset' does not have an overridable set accessor  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   133 13  EmptyMVC
Error   1   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.PasswordStrengthRegularExpression.get'  C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
Error   2   'EmptyMVC.Controllers.ProfileProvider' does not implement inherited abstract member 'System.Web.Security.MembershipProvider.PasswordFormat.get' C:\Users\DigitalJedi\documents\visual studio 2010\Projects\EmptyMVC\EmptyMVC\Controllers\ProfileController.cs   12  18  EmptyMVC
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tva*_*son 6

你应该使用override而不是new你的方法.使用new它时,会创建一个新方法,该方法隐藏基类中现有的同名方法,但实际上并未实现该方法.因为该方法是abstract在基类中声明的,所以您需要在任何非抽象继承类中实现它.使用override通知编译器您正在实现基类中定义的抽象方法,而不是像它那样替换它new.

编辑:您使用时收到的错误消息override是因为MembershipProvider没有在这些属性上实现settors.删除这些属性的settors,您的编译器错误将消失.在创建或配置提供程序时,您可能希望为这些属性设置支持字段.

我没有发现生成的编译器错误要么模糊不清,要么没有信息.这应该是显而易见的.您需要做的就是查看您正在实现的类的文档,您可以看到没有针对有错误的属性的setter.

  • 实际上,我认为这些错误可能是唯一重要的错误. (3认同)

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