Databases
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    <p>Use indirection and inheritance! If you're performing data access through an abstract Database class, require the Database implementation handle parameter binding.</p> <pre><code>public abstract class Database { private readonly DbProviderFactory factory; protected Database(DbProviderFactory factory) { this.factory = factory; } public virtual DbCommand CreateCommand(String commandText) { return CreateCommand(CommandType.Text, commandText); } public virtual DbCommand CreateCommand(CommandType commandType, String commandText) { DbCommand command = factory.CreateCommand(); command.CommandType = commandType; command.Text = commandText; return command; } public virtual void BindParametersByName(DbCommand command) { } } </code></pre> <p>And choose to create an Oracle specific implementation that overrides default command creation or provides the option to bind parameters by name.</p> <pre><code>public class OracleDatabase : Database { public OracleDatabase() : base(OracleClientFactory.Instance) { } public override DbCommand CreateCommand(CommandType commandType, String commandText) { DbCommand command = base.CreateCommand(commandType, commandText); BindParametersByName(command); return command; } public override void BindParametersByName(DbCommand command) { ((OracleCommand)command).BindByName = true; } } </code></pre> <p><em>Code based on the <a href="http://msdn.microsoft.com/en-us/library/dd203144.aspx" rel="nofollow noreferrer">Data Access Application Block</a> in the <a href="http://msdn.microsoft.com/en-us/library/cc467894.aspx" rel="nofollow noreferrer">Enterprise Library</a>.</em></p>
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    1. POBinding query parameters by name with ODP.NET
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    1. USAnthony Mastrean
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    1. COThis is very similar to what I ended up doing for a project. The OracleDatabase class provides a nice extension point too, for adding convenience methods that the ODP.NET default implementation doesn't provide.
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      1. USCodingWithSpike
    2. COAlthough this solution is perfect for use in C# code, it doesn't help in the case of an ASP.NET SqlDataSource : I have to specify an ADO.NET provider, not a custom data access layer...
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      1. USThomas Levesque
    3. CO@Thomas Levesque I'm unfamiliar with the SqlDataSource, but it seems you could inherit from DataSourceControl and re-build your own OracleDataSource... sound like fun?
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      1. USAnthony Mastrean
 

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Guidance
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.

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