I wrote a quickie app to check that I can successfully open a connection to the remote database using this connection string on the machine that is otherwise failing, and indeed I can successfully connect to the remote database. Otherwise, I'm running exactly the same function on both machines (this is used in a BizTalk Database Lookup functoid). Initial Catalog=MyDB Integrated Security=TrueThere is one difference between the connection strings - on the successful machine the database is local, and on the unsuccessful machine the database is on another machine. An example would be, 'Provider=SQLOLEDB '.ĭata Source=. In the example below the final SQL will be different if onlyActive is true or false, or if searchFor is not null.I am using the following connection string successfully on one machine, but the connection fails on another with the message An OLE DB Provider was not specified in the ConnectionString. Rather than concatenating strings we can 'compose' LINQ expressions. However, sometimes getting all the fields is too wasteful so we want only certain fields, but still use our POCOs something that is challenging for libraries that rely on object tracking, like LINQ to SQL. Most times we get the entire row from the database: from p in db.Product This is required for proper resource management, like releasing the database connections back into the pool. Make sure you always wrap your DataConnection class (in our case DbNorthwind) in a using statement. We also have to register our Product class we defined above to allow us to write LINQ queries.Īnd now let's get some data: using LinqToDB This parameter (called configuration name) has to match the name="Northwind" we defined above in our connection string. We call the base constructor with the "Northwind" parameter. Using Connection String Settings ProviderĪlternatively, you can implement custom settings provider with ILinqToDBSettings interface, for example: public class ConnectionStringSettings : IConnectionStringSettings In your web.config or app.config make sure you have a connection string (check this file for supported providers): Var dc = new DataConnection(builder.Build()) pass configured options to data connection constructor Var cn = new SqlConnection(connectionString) SqlServerProvider.MicrosoftDataSqlClient), Var builder = new LinqToDbConnectionOptionsBuilder()
Sql server connection string provider name code#
You can configure connection options from code using LinqToDbConnectionOptionsBuilder class (check class for available options): // create options builder "Server=.\ Database=Northwind Trusted_Connection=True Enlist=False ") You can simply pass provider name and connection string into DataConnection constructor: var db = new ( Let's get startedĬonfiguring connection strings Passing Into Constructor If you really want to help us please read this post. We do need something really more valuable - your time.
Sql server connection string provider name how to#
In other words LINQ to DB is type-safe SQL.ĭevelopment version nuget feed ( how to use) Standout Features There is no change-tracking, so you have to manage that yourself, but on the positive side you get more control and faster access to your data. However, it's not as heavy as LINQ to SQL or Entity Framework. Your queries are checked by the C# compiler and allow for easy refactoring.
LINQ to DB is the fastest LINQ database access library offering a simple, light, fast, and type-safe layer between your POCO objects and your database.Īrchitecturally it is one step above micro-ORMs like Dapper, Massive, or PetaPoco, in that you work with LINQ expressions, not with magic strings, while maintaining a thin abstraction layer between your code and the database.