Updated trunk

git-svn-id: https://svn.eiffel.com/eiffel-org/trunk@2484 abb3cda0-5349-4a8f-a601-0c33ac3a8c38

documentation/trunk/solutions/dotnet/samples/ado-net-samples/adonet-sample.wiki

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+[[Property:title|ADO.NET Sample]]
+[[Property:weight|0]]
+[[Property:uuid|45d24893-63d0-c2a9-9f62-ead08ca4b901]]
+This sample consist of a command line showing how to interact with a database.
+
+The DataReader object is somewhat synonymous with a read-only/forward-only cursor over data. The DataReader API supports flat as well as hierarchical data. A DataReader object is returned after executing a command against a database. The format of the returned DataReader object is different from a recordset. For example, you might use the DataReader to show the results of a search list in a web page.
+
+==Compiling==
+
+To compile the example:   
+# Launch EiffelStudio.
+# Select '''Use existing Ace (control file)''' and click '''OK'''
+# Browse to ''$ISE_EIFFEL\examples\dotnet\ado\ado3\''
+# Choose the Ace file for the version of the .net framework you are running
+# Choose the directory where the project will be compiled, by default the same directory containing the Ace file.
+# Click '''OK'''.
+
+
+==Running==
+
+After you launch the sample, the following output appears:
+<code>
+Customer ID    Company Name
+ALFKI    Alfreds Futterkiste
+ANATR    Ana Trujillo Emparedados y helados
+ANTON    Antonio Moreno Taquera
+AROUT    Around the Horn
+BERGS    Berglunds snabbkp
+BLAUS    Blauer See Delikatessen
+BLONP    Blondesddsl p`re et fils
+BOLID    Blido Comidas preparadas
+BONAP    Bon app'
+BOTTM    Bottom-Dollar Markets
+BSBEV    B's Beverages
+CACTU    Cactus Comidas para llevar
+CENTC    Centro comercial Moctezuma
+CHOPS    Chop-suey Chinese
+COMMI    Comrcio Mineiro
+CONSH    Consolidated Holdings
+DRACD    Drachenblut Delikatessen
+DUMON    Du monde entier
+EASTC    Eastern Connection
+...	...	...
+WILMK    Wilman Kala
+WOLZA    Wolski  Zajazd
+</code>
+
+When the display is finished, the application wait for you to pressed the return key to finish the application.
+
+==Under the Hood==
+
+This application shows how to interact with a database. First the connection to the database is opened:
+<code>
+            create connection.make ("server=(local)\NetSDK;Trusted_Connection=yes;database=northwind")
+</code>
+Then a request to the database is made: 
+<code>
+            create command.make ("select * from customers", connection)
+            connection.open
+            reader := command.execute_reader
+</code> 
+Finally, the result of the request is displayed:
+<code>
+            from
+                ok := reader.read
+            until
+                not ok
+            loop
+                io.put_string (reader.item ("CustomerID").to_string)
+                io.put_string ("%T%T")
+                io.put_string (reader.item ("CompanyName").to_string)
+                io.new_line
+                ok := reader.read
+            end
+</code>
+
+This sample uses the following ADO.NET classes: 
+*  <eiffel>SQL_DATA_READER</eiffel> 
+*  <eiffel>SQL_CONNECTION</eiffel> 
+*  <eiffel>SQL_COMMAND</eiffel> 
+
+==Notes==
+
+This sample is translated from the example located in the QuickStart\howto\samples\adoplus subdirectory of the .NET Framework SDK samples directory of Microsoft Visual Studio .NET.
+
+
+
+