I am getting error while inserting flat file into SQL Server. Direct transfer from SQL Server to SQL Server is not possible. Data has to be exported and then imported. Note : Data was exported from SQL server with text qualifier "double quotes" and pipe delimited "|". I tried to re-extract the data using fixed width format still unable to import. Please assist.
Error Message :
Error inserting data into table. (Microsoft.SqlServer.Import.Wizard)
------------------------------
Program Location:
at Microsoft.SqlServer.Import.Wizard.InsertData.ResultCheck(Result result)
at Microsoft.SqlServer.Import.Wizard.InsertData.DoWork()
at Microsoft.SqlServer.Management.TaskForms.SimpleWorkItem.Run()
===================================
Error inserting data into table. (Microsoft.SqlServer.Prose.Import)
------------------------------
Program Location:
at Microsoft.SqlServer.Prose.Import.BcpSynthesis.InsertIntoDB(String inputFilePath, String tableName, String schemaName, SqlConnection connection, Int32 batchSize, SqlTransaction transaction)
at Microsoft.SqlServer.Prose.Import.BcpProcess.<>c__DisplayClass42_0.<InsertIntoDb>b__0()
at Microsoft.SqlServer.Prose.Import.BcpProcess.ExecuteOperation(Action operation)
===================================
Object reference not set to an instance of an object. (Microsoft.SqlServer.Prose.Import)
------------------------------
Program Location:
at Microsoft.SqlServer.Prose.Import.OutputDataReader.GetValue(Int32 i)
at System.Data.SqlClient.SqlBulkCopy.GetValueFromSourceRow(Int32 destRowIndex, Boolean& isSqlType, Boolean& isDataFeed, Boolean& isNull)
at System.Data.SqlClient.SqlBulkCopy.ReadWriteColumnValueAsync(Int32 col)
at System.Data.SqlClient.SqlBulkCopy.CopyColumnsAsync(Int32 col, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.CopyRowsAsync(Int32 rowsSoFar, Int32 totalRows, CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.CopyBatchesAsyncContinued(BulkCopySimpleResultSet internalResults, String updateBulkCommandText, CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.CopyBatchesAsync(BulkCopySimpleResultSet internalResults, String updateBulkCommandText, CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternalRestContinuedAsync(BulkCopySimpleResultSet internalResults, CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternalRestAsync(CancellationToken cts, TaskCompletionSource`1 source)
at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternalAsync(CancellationToken ctoken)
at System.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServerAsync(Int32 columnCount, CancellationToken ctoken)
at System.Data.SqlClient.SqlBulkCopy.WriteToServer(IDataReader reader)
at Microsoft.SqlServer.Prose.Import.BcpSynthesis.InsertIntoDB(String inputFilePath, String tableName, String schemaName, SqlConnection connection, Int32 batchSize, SqlTransaction transaction)
Related
I'm using Nhibernate 4 and FluentNhibernate 2.0.3 with db Microsoft Access 2000. I can't save the entry on the DB because i'm getting an error when I go to insert the Note field sending a request HTTP POST for example:
{
"Note": "bla bla bla"
}
NOTE: In the database table, the column "Note" is setted as "LONG TEXT" (Not Required)
Could It be a problem of conversion of data Types?
Here's the stack trace:
NHibernate.Exceptions.GenericADOException: could not insert: [Domain.Destinatari#1773][SQL: INSERT INTO `Destinatari` (Note, IDDestinatario) VALUES (?, ?)] ---> System.Data.OleDb.OleDbException: Errore di sintassi nell'istruzione INSERT INTO.
in System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr)
in System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult)
in System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult)
in System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult)
in System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method)
in System.Data.OleDb.OleDbCommand.ExecuteNonQuery()
in NHibernate.JetDriver.JetDbCommand.ExecuteNonQuery()
in NHibernate.AdoNet.AbstractBatcher.ExecuteNonQuery(IDbCommand cmd)
in NHibernate.AdoNet.NonBatchingBatcher.AddToBatch(IExpectation expectation)
in NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id, Object[] fields, Boolean[] notNull, Int32 j, SqlCommandInfo sql, Object obj, ISessionImplementor session)
--- Fine della traccia dello stack dell'eccezione interna ---
in NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id, Object[] fields, Boolean[] notNull, Int32 j, SqlCommandInfo sql, Object obj, ISessionImplementor session)
in NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id, Object[] fields, Object obj, ISessionImplementor session)
in NHibernate.Action.EntityInsertAction.Execute()
in NHibernate.Engine.ActionQueue.Execute(IExecutable executable)
in NHibernate.Engine.ActionQueue.ExecuteActions(IList list)
in NHibernate.Engine.ActionQueue.ExecuteActions()
in NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions(IEventSource session)
Below my mapping code:
Public Class DestinatariMap
Inherits ClassMap(Of Destinatari)
Public Sub New()
MyBase.New
LazyLoad()
Id(Function(x) x.IDDestinatario).GeneratedBy().Increment()
Map(Function(x) x.Note)
End Sub
End Class
Here's my Domain code:
Public Class Destinatari
Private _ID_Destinatario As Integer
Private _Note As String
Public Overridable Property IDDestinatario() As Integer
Get
Return Me._ID_Destinatario
End Get
Set
Me._ID_Destinatario = Value
End Set
End Property
Public Overridable Property Note() As String
Get
Return Me._Note
End Get
Set
Me._Note = Value
End Set
End Property
End Class
Thanks
I'm using this query:
select *
from MailMessagesReceived mmd
inner
join MailMessageAttachments mmt
on mmd.ID = mmt.ID
Where mmd.created > '2017-01-01'
And mmd.SenderMailbox = 'finappanl#lyanthe.com'
And mmd.RecipientStatusDescription = 'Prepared'
And i get a time out error without message code. It reads "Er is een time-out opgetreden voor de bewerking." The following details are attached to the error:
select * from MailMessagesReceived
inner join MailMessageAttachments
on MailMessagesReceived.ID = MailMessageAttachments.ID
Where MailMessagesReceived.created > "2017-01-01"
And MailMessagesReceived.SenderMailbox = "finappanl#lyanthe.com"
And MailMessagesReceived.RecipientStatusDescription = "Prepared"
Type: System.Net.WebException
bij System.Net.HttpWebRequest.GetResponse()
bij Invantive.Data.ODataProvider.DoRequest(HttpWebRequest request, String url, String partition, String& returnUrl, Dictionary`2& headers) in File161:regel 3666
bij Invantive.Data.ODataProvider.GetInternal(String relativeUrl, String mimeType, String partition, Boolean allowFromCache, String& returnUrl, Dictionary`2& headers, Boolean& fromCache) in File161:regel 3001
bij Invantive.Data.ODataProvider.Get[T](String relativeUrl, Dictionary`2& headers, String& fullUrl, Boolean& resultFromCache, String partition, Boolean allowFromCache, String mimeType) in File161:regel 2880
bij Invantive.Data.ODataProvider.ReadDataFromServiceResponse(List`1 rows, String basePath, List`1 allFieldTypes, String url, String partition, ObjectDefinition objectDefinition, QueryObject queryObject, Int32& pagesRetrieved, Int32& rowsRetrieved) in File161:regel 1102
bij Invantive.Data.ODataProvider.FetchDataOnePartition(String serviceUrl, String partition, List`1 rows, String basePath, List`1 allFieldTypes, ObjectDefinition objectDefinition, QueryObject queryObject, ParameterList parameters) in File161:regel 1021
bij Invantive.Data.ODataProvider.<>c__DisplayClass72_3.<Fetch>b__2(String partition) in File161:regel 877
--- Einde van stacktracering vanaf vorige locatie waar uitzondering is opgetreden ---
bij Invantive.Data.ODataProvider.Fetch(EntityFieldCollection entityFields, QueryObject queryObject, ParameterList parameters, Boolean fetchSingle, Boolean fetchCountFirst, Int32 pagingSteps, Boolean fetchCount, ResultSet& resultSet, Int32& totalNumberOfRows) in File161:regel 914
bij Invantive.Data.ExactOnlineProvider.Fetch(EntityFieldCollection entityFields, QueryObject queryObject, ParameterList parameters, Boolean fetchSingle, Boolean fetchCountFirst, Int32 pagingSteps, Boolean fetchCount, ResultSet& resultSet, Int32& totalNumberOfRows) in File298:regel 909
bij Invantive.Data.ConnectionManager.ExecuteProviderFetch(EntityFieldCollection entityFields, QueryObject queryObject, ParameterList parameters, Boolean fetchSingle, Boolean fetchCountFirst, Int32 pagingSteps, Boolean fetchCount, Int32& totalNumberOfRows, String& handlingPath) in File39:regel 3190
bij Invantive.Data.ConnectionManager.Fetch(EntityFieldCollection entityFields, QueryObject queryObject, ParameterList parameters, Boolean fetchSingle, Boolean fetchCountFirst, Int32 pagingSteps, Boolean fetchCount) in File39:regel 1406
bij Invantive.Sql.DataSourceOrFunctionTree.<GetDataFromDataContainer>d__29.MoveNext() in File120:regel 315
bij System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
bij System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
bij Invantive.Sql.FirehoseResultSet.<Iterator>d__54.MoveNext() in File133:regel 547
bij System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
bij System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
bij Invantive.Sql.FirehoseResultSet.<Iterator>d__54.MoveNext() in File133:regel 559
bij System.Linq.Buffer`1..ctor(IEnumerable`1 source)
bij System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
bij Invantive.Sql.JoinIterator.<JoinInternal>d__13.MoveNext() in File135:regel 481
bij Invantive.Sql.FilterIterator.<Iterator>d__3.MoveNext() in File132:regel 92
bij Invantive.Sql.ChainedFirehose.<Iterator>d__11.MoveNext() in File130:regel 81
bij Invantive.Sql.SelectListIterator.<Iterator>d__7.MoveNext() in File138:regel 119
bij System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
bij System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
bij Invantive.Sql.QueryPlan.Fetch() in File140:regel 91
bij Invantive.Data.ConnectionManager.ExecuteProviderPassthroughSqlActionTable(String actionSql, ParameterList parameters, String& handlingPath) in File39:regel 4033
--- Einde van stacktracering vanaf vorige locatie waar uitzondering is opgetreden ---
bij System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bij Invantive.Data.ConnectionManager.ExecuteProviderPassthroughSqlActionTable(String actionSql, ParameterList parameters, String& handlingPath) in File39:regel 4062
bij Invantive.Data.ConnectionManager.PassthroughSqlActionTable(String actionSql, ParameterList parameters) in File39:regel 2086
--- Einde van stacktracering vanaf vorige locatie waar uitzondering is opgetreden ---
bij System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
bij Invantive.Data.ConnectionManager.PassthroughSqlActionTable(String actionSql, ParameterList parameters) in File39:regel 2098
bij Invantive.Data.ActionProceduresBase.PassthroughSqlActionTable(String actionSql, ParameterList parameters) in File29:regel 134
bij Invantive.Producer.Windows.Forms.QueryTool.ExecuteStatement(IProgressNotifier notifier, String statement, ParameterList bindVariables, Boolean showResultsInGrid, Boolean showStatistics, Boolean memorizeStatisticsInSqlHistory, Boolean allowPaging) in File948:regel 2847
bij Invantive.Producer.Windows.Forms.QueryTool.FetchResultsFromSql() in File948:regel 2430
I'm trying to get an overview of the 'Scan en Herken' (i.e. Scanning and recognition of invoices) inbox in Exact Online. This inbox contains invoices and computer generated account entries, each of which is either:
ready to be processed (green),
needs a few alterations (yellow)
or needs to be handled mannualy (red).
We want to know specifically how many invoices are in each of these three different states. For those who need alterations or manual corrections we want to know what the errors are.
With the query I was using I was just digging around to find out what data is contained in the MailMessageAttachments table. I don't know whether I'm digging in the correct place, so any advice on the subject would be nice. Furthermore I would like to know why my SQL code raises a time out.
There are some possible improvements. The REST API Mail messages (JSON) of Exact Online has recently been restructured to perform better, but nonetheless is not the fastest one around.
Please make sure first of all that you select only the divisions that you want to work with, for instance using:
use 123456,345678,56789
instead of using:
use all
Start of with a small division with some sample data and when the queries works improve performance by testing it on larger divisions.
Also, you might want to make sure that no implicit data type conversions take place, so prefer:
date-field > to_date('20170101', 'yyyymmdd')
to
date-field > '2017-01-01'
In this query it will probably not hurt.
It is better to query on status code instead of description. Descriptions vary per country and even per user. And a code might have been indexed, whereas a translatable description not.
Also, not all mail message will have an attachment, so it is better to use a left outer join.
Also, the MailMessageAttachments table can be a HUGE table (many documents included in binary format, especially when people use a gray scale or color scanner). Each row can download multiple megabytes, so it is better to only join it when absolutely needed.
Finally, you can have the query stop running after a limited number of rows have been retrieved using 'top' or 'limit' syntax.
Resulting query:
select *
from MailMessagesReceived mmd
left
outer
join MailMessageAttachments mmt
on mmd.ID = mmt.ID
Where mmd.created > to_date('20170101', 'yyyymmdd')
And mmd.SenderMailbox = 'Facturen#ExactOnline.nl' -- 'finappanl#lyanthe.com'
and mmd.recipientstatus = 20 /* Open. Etc, look up for Prepared. Enables index use. */
limit 50
When run on 30 small divisions using set requests-parallel-max 8, it takes approximately 1 minute to the row.
PS. Note that you can find the actual REST and XML URL calls and their duration using select * from exactonlinerest..sessionios.
I am trying to create FULL TEXT index using Entity Framework Migration by executing custom Sql.
My migration class looks like this:
public partial class DocumentContentFullTextIndex : DbMigration
{
public override void Up()
{
AlterColumn("dbo.Attachments", "ContentType", c => c.String(maxLength: 260));
Sql("CREATE FULLTEXT CATALOG FullTextIndexes AS DEFAULT;", true);
Sql(#"CREATE FULLTEXT INDEX ON [Attachments](
Content
TYPE COLUMN ContentType
Language 'ENGLISH'
)
KEY INDEX [PK_dbo.Attachments]
ON FullTextIndexes;", true);
}
public override void Down()
{
AlterColumn("dbo.Attachments", "ContentType", c => c.String(maxLength: null));
Sql("DROP FULLTEXT INDEX ON [Attachments]");
Sql("DROP FULLTEXT CATALOG FullTextIndexes");
}
}
When I run it from MSSQL management studio everything is perfect and SQL did exactly what I am expected from it.
But when running from migration project second Sql request fires exception
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
Full stack trace with -Verbose flag:
Update-Database -ConnectionStringName DatabaseContext -Verbose
Using StartUp project 'Lx2'.
Using NuGet project 'Database.Model'.
Specify the '-Verbose' flag to view the SQL statements being applied to the target database.
Target database is: 'Lx2' (DataSource: ., Provider: System.Data.SqlClient, Origin: Explicit).
Applying explicit migrations: [201406050348083_AttachmentsContentFullTextIndex].
Applying explicit migration: 201406050348083_AttachmentsContentFullTextIndex.
ALTER TABLE [dbo].[Attachments] ALTER COLUMN [ContentType] [nvarchar](260) NULL
CREATE FULLTEXT CATALOG FullTextIndexes AS DEFAULT;
CREATE FULLTEXT INDEX ON [Attachments](
Content
TYPE COLUMN ContentType
Language 'ENGLISH'
)
KEY INDEX [PK_dbo.Attachments]
ON FullTextIndexes;
System.Data.SqlClient.SqlException (0x80131904): Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.ComponentModel.Win32Exception (0x80004005): The wait operation timed out
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 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.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.<NonQuery>b__0(DbCommand t, DbCommandInterceptionContext`1 c)
at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext,TResult](TTarget target, Func`3 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed)
at System.Data.Entity.Infrastructure.Interception.DbCommandDispatcher.NonQuery(DbCommand command, DbCommandInterceptionContext interceptionContext)
at System.Data.Entity.Internal.InterceptableDbCommand.ExecuteNonQuery()
at System.Data.Entity.Migrations.DbMigrator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ExecuteSql(DbTransaction transaction, MigrationStatement migrationStatement, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbTransaction transaction, DbInterceptionContext interceptionContext)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatementsInternal(IEnumerable`1 migrationStatements, DbConnection connection)
at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClass30.<ExecuteStatements>b__2e()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0()
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation)
at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements, DbTransaction existingTransaction)
at System.Data.Entity.Migrations.DbMigrator.ExecuteStatements(IEnumerable`1 migrationStatements)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.ExecuteStatements(IEnumerable`1 migrationStatements)
at System.Data.Entity.Migrations.DbMigrator.ExecuteOperations(String migrationId, XDocument targetModel, IEnumerable`1 operations, IEnumerable`1 systemOperations, Boolean downgrading, Boolean auto)
at System.Data.Entity.Migrations.DbMigrator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.ApplyMigration(DbMigration migration, DbMigration lastMigration)
at System.Data.Entity.Migrations.DbMigrator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
at System.Data.Entity.Migrations.Infrastructure.MigratorLoggingDecorator.Upgrade(IEnumerable`1 pendingMigrations, String targetMigrationId, String lastMigrationId)
at System.Data.Entity.Migrations.DbMigrator.UpdateInternal(String targetMigration)
at System.Data.Entity.Migrations.DbMigrator.<>c__DisplayClassc.<Update>b__b()
at System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.EnsureDatabaseExists(Action mustSucceedToKeepDatabase)
at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration)
at System.Data.Entity.Migrations.Infrastructure.MigratorBase.Update(String targetMigration)
at System.Data.Entity.Migrations.Design.ToolingFacade.UpdateRunner.Run()
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.AppDomain.DoCallBack(CrossAppDomainDelegate callBackDelegate)
at System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner runner)
at System.Data.Entity.Migrations.Design.ToolingFacade.Update(String targetMigration, Boolean force)
at System.Data.Entity.Migrations.UpdateDatabaseCommand.<>c__DisplayClass2.<.ctor>b__0()
at System.Data.Entity.Migrations.MigrationsDomainCommand.Execute(Action command)
ClientConnectionId:3d298f0a-e2dc-4976-8587-c69d03b23c6b
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
I tried to copy all SQL from Verbose output exactly 'as is' and execute it directly in Management Studio and it work exactly as expected with no errors.
Any ideas how this can be fixed?
Strange thing also that if I put ContentType max length changing code
AlterColumn("dbo.Attachments", "ContentType", c => c.String(maxLength: 260));
in separate migration file everything also works fine.
UPDATE:
After shivakumar advice I tried to increase connection timeout (up to 5 minutes) in migration configuration and this increased time before I received "Timeout exception" but problem is still there.
Use Configuration.cs file to set custom time out:
internal sealed class Configuration : DbMigrationsConfiguration<ApplicationDbContext>
{
public Configuration()
{
AutomaticMigrationsEnabled = false;
ContextKey = "YourDbContext";
// New timeout in seconds
this.CommandTimeout = 60 * 5;
}
}
Your request processing may be taking more time than default command timeout of entity framework(30 sec).
You can increase command timeout if necessary as in thread below.
Entity Framework Timeouts
I am trying to authenticate a user through a login form by reading user details from my database UsersDB. On attempting to read, I get an error: Invalid object name: UsersDB
I got no errors when adding a new user to the database so I do not know why I am getting this error. Here is the stack trace I am getting:
[SqlException (0x80131904): Invalid object name 'UsersDB'.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +388
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +810
System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +4403
System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() +82
System.Data.SqlClient.SqlDataReader.get_MetaData() +135
System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +6666037
System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite) +6667856
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +577
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +107
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +288
System.Data.SqlClient.SqlCommand.ExecuteReader() +302
AuthWebRole.Account.UserLogin.Buttonlogin_Click(Object sender, EventArgs e) in c:\Users\Tamara\Documents\Visual Studio 2012\Projects\TCWalletAzure\AuthWebRole\Account\UserLogin.aspx.cs:32
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +155
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3804
Edit:
The query is as follows: (I replaced my username and password in my code)
string strcon = "Server=tcp:qemcclhlar.database.windows.net,1433;Database=UsersDB;User ID=[userid];Password=[mypassword];Trusted_Connection=False;Encrypt=True;Connection Timeout=30";
SqlConnection con = new SqlConnection(strcon);
SqlCommand com = new SqlCommand("CheckUser", con);
com.CommandType = CommandType.StoredProcedure;
SqlParameter user = new SqlParameter("username", UserName.Text);
SqlParameter pword = new SqlParameter("password", Password.Text);
com.Parameters.Add(user);
com.Parameters.Add(pword);
con.Open();
SqlDataReader rd = com.ExecuteReader();
if (rd.HasRows)
{
rd.Read();
LabelInfo.Text = "Login successful.";
}
else
{
LabelInfo.Text = "Invalid username or password.";
}
Database Schema:
Database: UsersDB with table UserTable
Well the important thing here is probably the connection string. Do the following: create an empty text file and rename it "myconnection.udl". Now double click on the file and it will launch an applet. You can configuer the connection to your database and test it. Now open the udl file in notepad, you will see the correct connection string. Copy connections string to your app connection settings. UDL files are generally misunderstood. They are simply a text file that holds the connection settings. They then call the connection dll. If the udl file works then you have a correct connection string 100%
I solved my problem - I entered the wrong table in the procedure query. It had to be as follows:
create PROCEDURE CheckUser
(
#username as varchar(50),
#password as varchar(50)
)
AS
SELECT * FROM UserTable WHERE Username=#username AND Password=#password
I erroneously entered UsersDB instead of UserTable
I've got a painfully simple table that is giving me a "Specified cast is not valid" error when I try to delete one or more rows. The table has two columns, an "id" as the primary key (INT), and a "name" (VARCHAR(20)), which maps to a String in the LINQ to SQL dbml file. Both of these statements produce the error:
dc.DeleteOnSubmit(dc.MyTables.Where(Function(x) x.id = 1).SingleOrDefault)
dc.DeleteAllOnSubmit(dc.MyTables)
I iterated through "MyTable" just to make sure there was no weird data, and there are only two rows:
id = 1, name = "first"
id = 2, name = "second"
The exception is happening on SubmitChanges. Here is the stack trace:
[InvalidCastException: Specified cast is not valid.]
System.Data.Linq.SingleKeyManager`2.TryCreateKeyFromValues(Object[] values, V& v) +59
System.Data.Linq.IdentityCache`2.Find(Object[] keyValues) +28
System.Data.Linq.StandardIdentityManager.Find(MetaType type, Object[] keyValues) +23
System.Data.Linq.CommonDataServices.GetCachedObject(MetaType type, Object[] keyValues) +48
System.Data.Linq.ChangeProcessor.GetOtherItem(MetaAssociation assoc, Object instance) +142
System.Data.Linq.ChangeProcessor.BuildEdgeMaps() +233
System.Data.Linq.ChangeProcessor.SubmitChanges(ConflictMode failureMode) +59
System.Data.Linq.DataContext.SubmitChanges(ConflictMode failureMode) +331
System.Data.Linq.DataContext.SubmitChanges() +19
InpatientCensus.MaintenanceController.DeleteSoleCommunity(Int32 id) in C:\Documents and Settings\gregf\My Documents\Projects\InpatientCensus\InpatientCensus\Controllers\MaintenanceController.vb:14
lambda_method(ExecutionScope , ControllerBase , Object[] ) +128
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +17
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +178
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +24
System.Web.Mvc.<>c__DisplayClassa.<InvokeActionMethodWithFilters>b__7() +52
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +254
System.Web.Mvc.<>c__DisplayClassc.<InvokeActionMethodWithFilters>b__9() +19
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +192
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +399
System.Web.Mvc.Controller.ExecuteCore() +126
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +27
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7
System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext) +151
System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext) +57
System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext) +7
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75
Removing the association added to the DBML file allows rows to be deleted. Why would the association be causing the error? The associated columns are both VARCHAR(20) in the database and resolve to Strings in the DBML file.
What could possibly be causing a casting error?
Okay, upon seeing the update, the issue is the association between your two tables. This is a known bug in .NET 3.5 SP1 and will be fixed in .NET 4.0. Try your code on a .NET 4.0 Beta if you can.
We had a similar problem, caused by using non-integer keys. Details and hotfix number are here: https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=351358
Try:
dc.MyTables.DeleteOnSubmit(dc.MyTables.SingleOrDefault(x=>x.id==1));
dc.MyTables.DeleteAllOnSubmit(dc.MyTables);