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2011-06-01T16:36:50.593
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Don't pass the connection string in the BO layer. Instead use an indentifier and then a factory in your DAL layer to go and get the connection string/DAL. For example, DAL Dll config file: <pre><code><Connections> <connection name="test" connectionString="Data Source=####\SQL2008;Initial Catalog=test;User Id=####;Password=####;" providerName="System.Data.SqlClient">test</connection> <connection name="test2" connectionString="Data Source=####\SQL2008;Initial Catalog=test2;User Id=####;Password=####;" providerName="System.Data.SqlClient">test2</connection> </Connections> </code></pre> When a client logs in to your application, give them a drop down of available connections (or hide it via a config file if you don't want users choosing the connection) and then use that to factory out a database connection. The objects that are passed between layers would have this identifier. Use the identifer to create the DAL conneciton. Sample data transfer object that could be passed between layers (with identifier): <pre><code> /// <summary> /// A data transfer object is sent between layers. It has a few base properties /// as well as a list of payload objects. /// </summary> [DataContract(Namespace= SharedModelNamespace.Namespace.SharedModel)] public class DataTransferObject { /// <summary> /// As part of the data transfer object, it specifies what environment to connect /// to should it make a DAL call. /// </summary> [DataMember] public string DataEnvironment {get; set }; /// <summary> /// These are the list of objects (the payload) that will be transferred /// back and forth from the server to the client. /// </summary> [DataMember] public List<BasePOCO> DataTransferObjects { get; set; } </code></pre>
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1. POBest approach to call similar methods on c#
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1. USJon Raynor
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1. COthanks I not question it correctly, sorry. I use a framework that do something like that, but my principal problem is that this framework have a UI that allow me to "automate" retrieving data from BOs, but this framework to use this "automatic" stuff use reflection and create a instance with a parameterless constructor (and without a reference to the BO that it will use, it create it dinamically, retrieve data and dispose it) and it doesn't allow me to fill the "dataEnviroment" property on this automatic stuff
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2. COOK, sorry about that. See my 2nd suggestions. Thx.
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.