[SOLVED]Changing Database Server on Entity Data Model

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Hi Folks, i have a question:
Scenario:
I have developed an application in VS 2010 with C# and i have a data model that points to a database on a specific server. An specific scenario is my Office and my Home: In the Office the Server's name is FS-OFFICE\SQLSERVER and in my home is SERVER\SQLEXPRESS
The databases are the same in both cases.

What i want to do is, depending on the place of implementation of the software, be able of select the server programatically or with a config file instead, because i haven't the possibility to change the servers names.
That is possible?

Thanks in advance.
Best Regards!

SOLUTION: Thanks to Henry Minute changing the target server on the app.config file works great for me. Just changing the string in "Data Source" works.

XML

<connectionStrings>
<add name="FFPFrameWorkEntities" connectionString="metadata=res://*/Entities.FFP_FrameWork.csdl|res://*/Entities.FFP_FrameWork.ssdl|res://*/Entities.FFP_FrameWork.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=FS-OFFICE\sqlexpress;Initial Catalog=FFPFrameWork;Integrated Security=True;MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" />
</connectionStrings>

Thanks Mod! I also learned how to present the code!

Posted 12-Dec-10 11:08am

Pablinff

Updated 13-Dec-10 12:33pm

v5

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[no name] 12-Dec-10 21:20pm

Please elaborate on the solution. An edmx file uses a connection string such as
connectionString="metadata=res://*/EFEntities.csdl|res://*/EFEntities.ssdl|res://*/EFEntities.msl;provider=System.Data.SqlClient;provider connection string="Data Source=.;Initial Catalog=TimingTest;Integrated Security=True;MultipleActiveResultSets=True""
I'm curious how you applied Henry's solution to you problem?

2 solutions

Solution 2

When building and Entity Data Model with Visual Studio the connection string is already stored in the app.config. Browser the code for this article, Entity Framework Performance[^] and you will see the app.config file with the connection strings.

Also, one of the constructors for the DataContext class takes an IDbConnection, so you could create your own and pass it to the ctor.

Posted 12-Dec-10 11:35am

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Henry Minute · Accepted Answer · 2010-12-12T11:32:00

You can have more than one connection string in the config file:

XML

<connectionStrings>
  <add name="Home" connectionString="Data Source=SERVER\SQLEXPRESS;AttachDbFilename=D:\data\MyStuff.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
    providerName="System.Data.SqlClient" />
  <add name="Office" connectionString="Data Source=FS-OFFICE\SQLSERVER;AttachDbFilename=H:\data\MyStuff.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
    providerName="System.Data.SqlClient" />
</connectionStrings>

and access it something like:

C#

SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Home"].ConnectionString);

OR

C#

SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Office"].ConnectionString);

Hope this helps. :)