How Can I Use Postgresql With Entity Framework (In Visual Studio 2012) ?

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I want to use tree view in my age , to show category , sub category and sub - sub category .
Now I did manually entry for category table (postgre database, schema= category , table name = allcategory).
so i wnat to display these information in tree view using entity frame work.
so can u give any way , how we can connect PostgreSql ?
(i know how to connect SqlServer with entity frame work).
But when i try to add connection for postgresql , it did not show any provider for postgresql...
Thank you.

Posted 4-Feb-14 23:03pm

Bhagyashree Chaudhari - Member 10473634

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Member 10434230 · Answer 1 · 2014-02-04T23:17:00

Solution 1

Entity framework also works with Npgsql - .Net Data Provider for Postgresql. A tutorial on how to set it up can be found here: http://npgsql.projects.postgresql.org/

Posted 4-Feb-14 23:17pm

Member 10434230

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Bhagyashree Chaudhari - Member 10473634 5-Feb-14 5:19am

I know this , but i tried and not working.
I want to add connection of postgresql, and i searched for it but not getting answers.
Thank you.

Member 10434230 5-Feb-14 6:22am

Any specific error that you are getting?
there is a working example posted at: http://npgsql.projects.pgfoundry.org/exampleprograms.html

Bhagyashree Chaudhari - Member 10473634 7-Feb-14 1:30am

with out entity frame work its works fine.
but when i choose , project as entity framework and want to show tree view , it is not displayed and gives error "Object reference not set to an instance of an object."