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* Problem about connect Postgre using ADO.NET
@ 2017-05-23 07:17 NGUYEN TRONG LANH <t_lanh@brycen.com.vn>
2017-05-24 07:24 ` Re: Problem about connect Postgre using ADO.NET Charles Clavadetscher <clavadetscher@swisspug.org>
2017-06-10 23:20 ` Re: Problem about connect Postgre using ADO.NET Neil Anderson <neil@postgrescompare.com>
0 siblings, 2 replies; 3+ messages in thread
From: NGUYEN TRONG LANH @ 2017-05-23 07:17 UTC (permalink / raw)
To: pgsql-docs
Hello pgsql support team!
At first, forgive me if the content of the email is not your
responsibility. I have problem when I try connect Postgre using ADO.NET,
I not see PostgreSQL in Data Source list.
I have done to install Npgsql package, install Npgsql PostgreSQL
extension but the problem is not solve.
Please let's me know if you have any ideas to solve this.
Thanks!
--
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| | | BRYCEN VIETNAM Co.,Ltd.
)_) )_) )_) NGUYEN TRONG LANH
)___))___))___)| Development Department
)____)____)_____)|| 25 Nguyen Van Cu,Hue,Vietnam
_____|____|____|____|||__ Email: t_lanh@brycen.com.vn
---------| /--------- Tel: +84-(0)234-6558332
^^^^^ ^^^^^^^^^^^^^^^^^^^^^ Mobile:+84-(0)93 8924 386
^^^^ ^^^^ ^^^ ^^ Website:http://www.brycen.com.vn
^^^^ ^^^
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^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: Problem about connect Postgre using ADO.NET
2017-05-23 07:17 Problem about connect Postgre using ADO.NET NGUYEN TRONG LANH <t_lanh@brycen.com.vn>
@ 2017-05-24 07:24 ` Charles Clavadetscher <clavadetscher@swisspug.org>
1 sibling, 0 replies; 3+ messages in thread
From: Charles Clavadetscher @ 2017-05-24 07:24 UTC (permalink / raw)
To: 'NGUYEN TRONG LANH' <t_lanh@brycen.com.vn>; pgsql-docs
Hello
> -----Original Message-----
> From: pgsql-docs-owner@postgresql.org [mailto:pgsql-docs-owner@postgresql.org] On Behalf Of NGUYEN TRONG LANH
> Sent: Dienstag, 23. Mai 2017 09:18
> To: pgsql-docs@postgresql.org
> Subject: [DOCS] Problem about connect Postgre using ADO.NET
>
> Hello pgsql support team!
>
> At first, forgive me if the content of the email is not your responsibility. I have problem when I try connect
> Postgre using ADO.NET, I not see PostgreSQL in Data Source list.
>
> I have done to install Npgsql package, install Npgsql PostgreSQL extension but the problem is not solve.
>
> Please let's me know if you have any ideas to solve this.
If I understand it correctly you installed Npgsql that is a driver for PostgreSQL using ADO.NET.
What is still missing is a data source, i.e. a DSN where you choose the driver and enter connection and login information.
How you create a DSN depends on the version of Windows you are on.
Hope this helps.
Regards
Charles
> Thanks!
>
>
>
> --
> -------------------------------------------------------------------++
>
> | | | BRYCEN VIETNAM Co.,Ltd.
> )_) )_) )_) NGUYEN TRONG LANH
> )___))___))___)| Development Department
> )____)____)_____)|| 25 Nguyen Van Cu,Hue,Vietnam
> _____|____|____|____|||__ Email: t_lanh@brycen.com.vn <mailto:t_lanh@brycen.com.vn>
> ---------| /--------- Tel: +84-(0)234-6558332
> ^^^^^ ^^^^^^^^^^^^^^^^^^^^^ Mobile:+84-(0)93 8924 386
> ^^^^ ^^^^ ^^^ ^^ Website:http://www.brycen.com.vn
> ^^^^ ^^^
> --------------------------------------------------------------------++
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^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: Problem about connect Postgre using ADO.NET
2017-05-23 07:17 Problem about connect Postgre using ADO.NET NGUYEN TRONG LANH <t_lanh@brycen.com.vn>
@ 2017-06-10 23:20 ` Neil Anderson <neil@postgrescompare.com>
1 sibling, 0 replies; 3+ messages in thread
From: Neil Anderson @ 2017-06-10 23:20 UTC (permalink / raw)
To: NGUYEN TRONG LANH <t_lanh@brycen.com.vn>; pgsql-docs
On 2017-05-23 3:17 AM, NGUYEN TRONG LANH wrote:
> Hello pgsql support team!
>
> At first, forgive me if the content of the email is not your
> responsibility. I have problem when I try connect Postgre using ADO.NET,
> I not see PostgreSQL in Data Source list.
>
> I have done to install Npgsql package, install Npgsql PostgreSQL
> extension but the problem is not solve.
Hi, I use Npgsql in my project. I'm not sure what you mean by 'I do not
see PostgreSQL in Data Source list', Npgsql does not discover the server
for you, you must provide it with a connection string, create a
connection and execute commands. Here is a code example:
var connString =
"Host=localhost;Username=postgres;Password=passwrd;Database=postgres";
using (var conn = new NpgsqlConnection(connString))
{
conn.Open();
// Insert some data
using (var cmd = new NpgsqlCommand())
{
cmd.Connection = conn;
cmd.CommandText = "INSERT INTO data (some_field) VALUES (@p)";
cmd.Parameters.AddWithValue("p", "Hello world");
cmd.ExecuteNonQuery();
}
// Retrieve all rows
using (var cmd = new NpgsqlCommand("SELECT some_field FROM data",
conn))
using (var reader = cmd.ExecuteReader())
while (reader.Read())
Console.WriteLine(reader.GetString(0));
}
For future reference Npgsql have wonderful documentation here
http://www.npgsql.org/index.html, and they prefer questions be posted to
Stack Overflow.
--
Neil Anderson
neil@postgrescompare.com
http://blog.postgrescompare.com
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2017-05-23 07:17 Problem about connect Postgre using ADO.NET NGUYEN TRONG LANH <t_lanh@brycen.com.vn>
2017-05-24 07:24 ` Charles Clavadetscher <clavadetscher@swisspug.org>
2017-06-10 23:20 ` Neil Anderson <neil@postgrescompare.com>
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