ADO.NET 数据库应用程序 运行 时间异常

ADO.NET database application run time Exception

请帮助理解这些异常告诉我的内容以及我如何解决它们？

我用 ADO.NET 创建了一个应用程序。项目调试器没有显示任何错误，但在 运行 期间我收到了这些异常。我想我在这个方法 'GetFullContactPersonTreeDB' 中的 'PersonkartotekDBUtil.cs 文件中写了一些代码行。 在这里，我要做的是通过 JOIN 原则显示完整的个人概览信息以及个人目录的连接属性。

有人可以纠正我吗？

我怀疑不起作用的方法是：

public void GetFullContactPersonTreeDB(ref Person fcpt)
    {
        string fullPersonkartotek = @"SELECT  Person.PersonId, Person.FirstName, Person.MiddleName, Person.LastName, Person.Email, Person.Notes, Person.PrimaryAddress, Person.AlternativeAddresses, Person.TelefonNumbers
                                          Address.AddressID, Address.StreetName, Address.HouseNumber, Address.PostNr, Address.PersonPrimary, Person.AlternativePerson
                                          PostNr.PostNrID, PostNr.PostNumber, PostNr._Country, PostNr._City
                                          City.CityID, City.CityName,
                                          Country.CountryID, Country.CountryCode, Country.CountryName,
                                          Telefon.TelefonID, Telefon.Number, Telefon.TelefonType, Telefon.TelefonProvider, 
                                          Provider.ProviderID, Provider.ProviderName

            FROM      Person INNER JOIN
            Address ON Person.PersonId = Address.Person INNER JOIN
            Telefon ON Person.PersonID = Telefon.Person
            AlternativeAddress ON Person.PersonID = AlternativeAddress.Person
            Address ON Person.PersonID = Address.Person
            WHERE   (Person.PersonID = @PersonId)";


    }

在 运行 运行程序后 window 控制台上的错误消息：

System.Data.SqlClient.SqlException (0x80131904): Incorrect syntax near '.'. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader() at Infrastructure.PersonkartotekDB.ADONET.PersonkartotekDBUtil.GetFullContactPersonTreeDB(Person& fcpt) in C:\Users\User\Desktop\E18I4DABHandIn2au2016082168\Personkartotek\Infrastructure\PersonkartotekDB.ADONET\PersonkartotekDBUtil.cs:line 382 ClientConnectionId:716d2899-cbbe-4aa6-89de-66452d907b66 Error Number:102,State:1,Class:15

Unhandled Exception: System.Data.SqlClient.SqlException: Incorrect syntax near '.'. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() at System.Data.SqlClient.SqlDataReader.get_MetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) at System.Data.SqlClient.SqlCommand.ExecuteReader() at Infrastructure.PersonkartotekDB.ADONET.PersonkartotekDBUtil.GetFullContactPersonTreeDB(Person& fcpt) in C:\Users\User\Desktop\E18I4DABHandIn2au2016082168\Personkartotek\Infrastructure\PersonkartotekDB.ADONET\PersonkartotekDBUtil.cs:line 449 at ApplicationLogic.PersonkartotekApp.ProgramApp() in C:\Users\User\Desktop\E18I4DABHandIn2au2016082168\Personkartotek\ApplicationLogic\PersonkartotekApp.cs:line 14 at ProgramApplication.Program.Main(String[] args) in C:\Users\User\Desktop\E18I4DABHandIn2au2016082168\Personkartotek\ProgramApplication\Program.cs:line 10

附件显示了调试器上的异常。

您似乎遗漏了几个逗号，并且还遗漏了一个内连接。

通过 运行 您在 Sql server management studio(SSMS) 中的查询并使用解析 (CTRL+F5) 可以突出显示问题。

请参阅下面的固定代码。 将来值得拥有一致的格式以使您的生活更轻松。 

SELECT  Person.PersonId, Person.FirstName, Person.MiddleName, Person.LastName, Person.Email, Person.Notes, Person.PrimaryAddress, Person.AlternativeAddresses, Person.TelefonNumbers,
                                      Address.AddressID, Address.StreetName, Address.HouseNumber, Address.PostNr, Address.PersonPrimary, Person.AlternativePerson,
                                      PostNr.PostNrID, PostNr.PostNumber, PostNr._Country, PostNr._City,
                                      City.CityID, City.CityName,
                                      Country.CountryID, Country.CountryCode, Country.CountryName,
                                      Telefon.TelefonID, Telefon.Number, Telefon.TelefonType, Telefon.TelefonProvider, 
                                      Provider.ProviderID, Provider.ProviderName

        FROM      Person 
        INNER JOIN Address ON Person.PersonId = Address.Person 
        INNER JOIN Telefon ON Person.PersonID = Telefon.Person
        INNER JOIN AlternativeAddress ON Person.PersonID = AlternativeAddress.Person
        INNER JOIN   Address ON Person.PersonID = Address.Person
        WHERE   Person.PersonID = @PersonId