.NET IIS Soap服务器从UNC路径连接Firebird数据库

Question

I am using Visual studio 2017 with .NET 4.0 and Firebird ADO provider version 4.6. I'm having trouble connecting to a database file on a different server then de Web service and the Firebird service.

So for example:

Firebird host: localhost
Firebird port: 3050

Database file path: \\\\\\\\server1\\C$\\Databases\\test.fdb

When I try to setup the connection string I create it like below:

connectionstring = "User ID=sysdba;Password=masterkey;Database=localhost/3050:\\server1\C$\Databases\test.fdb;DataSource=localhost;Port=3050;Charset=NONE;";

When I try to connect I get the message "Unavailable database". When I try the same with a Delphi project it does work, so I am sure the host, port and path all work. Is this a bug in de .NET Firebird provider or how can I fix my connection string?

How I build connection string in Delphi:

connectionstring := 'localhost/3050:\\server1\C$\Databases\test.fdb';

By the way I've tried almost every other possibility for setting the database string part.

Answer 1

Try to change your statement to the following;

connectionstring = @"User ID=sysdba;Password=masterkey;Database=localhost/3050:\\server1\C$\Databases\test.fdb;DataSource=localhost;Port=3050;Charset=NONE;"

Or if you don't want to use the '@' change it to the following;

connectionstring = "User ID=sysdba;Password=masterkey;Database=localhost/3050:\\\\server1\\C$\\Databases\\test.fdb;DataSource=localhost;Port=3050;Charset=NONE;"

the backslash is interpreted as an escape character so you need to add another backslash to each backslash you don't want escaped or just use the '@' in front of the string and it will do it for you.

Answer 2

What is your Firebird database version?

We recently have an upgrade from Firebird 2.5 to Firebird 3.0 and I had to make several changes in my project in order to make it work again. Some of them were changing the framework number, replacing the dll in references, changing firebird.conf content etc.

For your reference with firebird 3.0 I use this for connection:

Imports FirebirdSql.Data.FirebirdClient

Public con As New FbConnection("ServerType=0;User=SYSDBA;Password=bla;Size=4096;Dialect=3;Pooling=FALSE;database=localhost/3050:C:\example.FDB")