Firebird ADO.NET Provider SDK Documentation - v1.7

FbConfiguration.SetSqlDialect Method 

Sets the SQL dialect of the Firebird Database.

[Visual Basic]
Public Sub SetSqlDialect( _
   ByVal sqlDialect As Integer _
)
[C#]
public void SetSqlDialect(
   int sqlDialect
);

See Also

FbConfiguration Class | FirebirdSql.Data.Firebird.Services Namespace