Question

I have a connection string defined in my web.config like:

<connectionStrings>
<add name="LibraryConnectionString"  connectionString="Server=.\SQLEXPRESS3;Database=Library;Integrated Security=true" />

Well…lI do not understand why when i drag-and-drop tables into a new DataClasses dbml it does not construct a default constructor specifying the connection string….

I only have constructor with params like:

public DataClassesDataContext(string connection) : 
        base(connection, mappingSource)
{
    OnCreated();
}

I do need a default constructor for LinqDataSource..

Can anyone suggest a work-around?

Thanks

Answer 1

You can make a default constructor in a separate file like this:

partial class DataClassesDataContext
    public DataClassesDataContext()
         : this(ConfigurationManager.ConnectionStrings["LibraryConnectionString"].ConnectionString) {
    }
}

Make sure not to call OnCreated twice.