linq - Cannot create a model from a preexisting database in Postgresql, .NET provider for postgresql doesn't exist -


i'm having problem that's blocking me on 4 days now. i'm developing wcf webservice , tried connecting postgresql database via visual studio 2010. installed npgsql, entityframework, linqtopostgresql, , devart dotconnect postgresql, shaolinq... nugetpackage manager. installed entity developer.

i managed create connexion postgresql database, when try create model out of database (i add new devart linq sql model item), postgresql provider doesn't show in combobox! here screenshots more clarification :

here add new item : devart linq sql model

creating model database

set connexion properties

here in provider combobox 3 choices :

.net framework data provider microsoft sql server compact 3.5

.net framework data provider microsoft sql server compact 4.0

.net framework data provider sql server

here's screenshot references added project :

references

thanks in advance help!

the work-around managed apply moment using npgsqlcommand directly code , connecting database. can't use database entities classes @ least trick, now. still hope enlighten me more issue 'cause seems there no solution frustrating. literally on edge of starting scratch , re-creating spatial database in sql server.


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