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Editorial Team
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Asked: 2026-06-01T19:59:45+00:00

Sorry if this is a dumb question. I’m writing a simple 3 tier ASP

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Sorry if this is a dumb question. I’m writing a simple 3 tier ASP Web Forms app, how can I inject my connection string into my DAL to the LINQ to SQL Class

I believe this is pulling the con info from the App.Config in the DAL 

    public LNQDataContext() : 
            base(global::bcDAL.Properties.Settings.Default.TM10_ArchiveConnectionString, mappingSource)
    {
        OnCreated();
    }

is there a way I could modify this to LINQDataContext(string conStr) ?? I really want the admin to be able to set this in the web.config (not have it hard coded in a dll) should he have to move stuff around.

Or any other insightful alternatives are welcome, thanks in advance.

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1 Answer

  1. Editorial Team

    The DataContext class generated for you via the DBML file is a partial, so just extend it with your own class that is named the same and add whatever additional constructor you need. However, I’m not sure why you think the connection string is hard coded with what you have. Dragging tables onto your DBML surface from the Server Explorer already adds a connection string to your web/app.config. That’s what global::bcDAL.Properties.Settings.Default.TM10_ArchiveConnectionString is pointing to in your example.

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