Is it possible to programmatically create a DBLink in SQL server 2005 in C#?
Suppose I have database A and B. I want to create a DBlink in A to connect B. I will capture the B database info from user and create the DBLink in database A. Is this possible in C# .Net version 2.0?
You can add a linked server with sp_addlinkedserver:
EXEC sp_addlinkedserver
@server = 'OracleHost',
@srvproduct = 'Oracle',
@provider = 'MSDAORA',
@datasrc = 'MyServer'
From C#, you can store this query in a SqlCommand, and call ExecuteNonQuery() to execute it on the database.
What you wanna do is make a Stored Procedure that does this and then call it from C#
Make the following stored procedure:
Create PROCEDURE [dbo].[LinkMyServer]
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
EXEC sp_addlinkedserver @server = N'LinkName',
@srvproduct = N' ',
@provider = N'SQLOLEDB',
@datasrc = N'some.domain.or.ip.com',
@catalog = N'database_name'
EXEC sp_addlinkedsrvlogin N'LinkName', false, N'ServerDomain\Administrator', N'user_on_remotedb', N'password_on_remote_db'
END
Now the remote db has been linked to the Local User Administrator.
Now in C# you just make a SqlCommand and and set type to stored procedure and execute a non query :)
ServerDomain\\Administrator could also just be a sql user like 'dbo'.
Hope this helped.
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