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http://tracker.firebirdsql.org/browse/DNET-288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jiri Cincura reopened DNET-288:
-------------------------------
Actually it looks easy to improve this to support scenario when no datatype is
set explicitly by developer, to just go to database and ask for it. Look at
DNET-289.
> TimeSpan FbCommand parameter throws InvalidCastException with embedded FB
> -------------------------------------------------------------------------
>
> Key: DNET-288
> URL: http://tracker.firebirdsql.org/browse/DNET-288
> Project: .NET Data provider
> Issue Type: Bug
> Components: ADO.NET Provider
> Affects Versions: 2.5.1
> Environment: Windows, Firebird 2.1.2, Firebird embedded 2.1.3.18185,
> Firebird .net provider 2.5.1.0
> Reporter: Pavel Kopecky
> Assignee: Jiri Cincura
> Priority: Minor
>
> I have a method parameter 'time' of type nullable<TimeSpan>. When I use it
> with Firebird 2.1.2, everything is ok, with Firebird embedded I get
> InvalidCastException.
> This is part of my SQL command:
> if (time.HasValue)
> sqlText.AppendLine(" AND time_from_t19 <= @time and time_to_t19 >=
> @time");
> (...)
> if (time.HasValue)
> command.Parameters.AddWithValue("time", time.Value);
> Exception:
> Type: InvalidCastException
> Message: Unable to cast object of type 'System.TimeSpan' to type
> 'System.Byte[]'.
> Source: XXXXXXXX.DBLayer
> Target site: FirebirdSql.Data.FirebirdClient.FbDataReader
> ExecuteReader(FirebirdSql.Data.FirebirdClient.FbCommand)
> When I use this instead, everything is ok:
> if (time.HasValue)
> sqlText.AppendLine(" AND time_from_t19 <= '" + time.Value.ToString() + "'
> and time_to_t19 >= '" + time.Value.ToString() + "'");
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