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FirebirdSQL / NETProvider

Firebird ADO.NET Data Provider
https://firebirdsql.org/en/net-provider/
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System.InvalidCastException: Object cannot be cast from DBNull to other types. [DNET913] #840

Open firebird-automations opened 5 years ago

firebird-automations commented 5 years ago

Submitted by: @cincuranet

Attachments: EFDataAccess.zip REPORTTEST.FDB

Votes: 2

System.InvalidCastException: Object cannot be cast from DBNull to other types.

at System.DBNull.System.IConvertible.ToInt32(IFormatProvider provider)

at System.Convert.ToInt32(Object value, IFormatProvider provider)

at FirebirdSql.Data.Common.DbValue.GetInt32()

at FirebirdSql.Data.FirebirdClient.FbDataReader.<GetInt32>b__51_0(Int32 x)

at FirebirdSql.Data.FirebirdClient.FbDataReader.CheckedGetValue[T](Func`2 f, Int32 index)

at FirebirdSql.Data.FirebirdClient.FbDataReader.GetInt32(Int32 i)

at lambda_method(Closure , DbDataReader )

at Microsoft.EntityFrameworkCore.Storage.Internal.NoopExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)

at System.Linq.Enumerable.SelectEnumerableIterator`2.MoveNext()

at Microsoft.EntityFrameworkCore.Query.Internal.LinqOperatorProvider._TrackEntities[TOut,TIn](IEnumerable`1 results, QueryContext queryContext, IList`1 entityTrackingInfos, IList`1 entityAccessors)+MoveNext()

at Microsoft.EntityFrameworkCore.Query.Internal.LinqOperatorProvider.ExceptionInterceptor`1.EnumeratorExceptionInterceptor.MoveNext()

firebird-automations commented 5 years ago
Modified by: @cincuranet Attachment: EFDataAccess\.zip \[ 13396 \] Attachment: REPORTTEST\.FDB \[ 13397 \]