c# - Additional information: Failed to establish a connection to 'Server' -

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i'm trying create service update postgresql database using topshelf, npgsql , c# following error when trying connect database.

a first chance exception of type 'npgsql.npgsqlexception' occurred in npgsql.dll

an exception of type 'npgsql.npgsqlexception' occurred in npgsql.dll not handled in user code

additional information: failed establish connection 'hostname'

this connection string.

conn = new npgsqlconnection("server=hostname;port=5432;user id=uid;password=pass;                              database=dbname;");

i use the same connection line asp.net c# webapp working fine. pg_hba.conf file has line host all 0.0.0.0/0 md5 , postgresql.conf file has line listen_addresses = '*'. able connect database through pgadmin same log in credentials. have added rule firewall on computer port 5432 , host server not have firewall enabled.

i tried run same code on same system postgresql server hosted using localhost server , received same error.


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