Passing the connection string in my web.config to my Data Access Project

Posted on 2006-10-30
Medium Priority
Last Modified: 2010-04-23
I have created a website. My website web.config is storing the connection string to the database. I also have 2 additional class library projects MyWebisteBLL(Business Logic) and MyWebsiteDAL(Data Access Layer).  In my DAL the app.config is storing the connection string for this project.  What is the proper way for the DAL to reference the connection string from the web.config.
Question by:DigitalDan3

Accepted Solution

Shakti109 earned 1500 total points
ID: 17835868

Are these DLL libraries separate objects as in they are compiled out to true .DLL's and then these .DLL's are referenced in your web project, OR are they just classes you have created in the single web project.

If they are truly separate .DLL's that are then referenced by your root web project, you will need to add the same .config file as a resource to the .DLL.

If they are just classes within the single web-project then you can reference it directly.

Something along the lines of :

Private oDatasource as string
Private aConfig As System.Configuration.ConfigurationSettings
oDatasource = aConfig.AppSettings("DataSource")

This assumes the key in your .config file is named "DataSource".

Author Comment

ID: 17837694
These are separate projects that I created in my website solution.  They are DLL's in my Bin folder and their connection string is stored in .config file of the project.  How can I make these DLL's use the connection in the web.config.  I am using the new membership API in VS2005.  The membership API and the Data are on the same database.  I was trying to avoid changing the connection string in 2 different places as I will be working against the live and development data.



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