Microsoft KB Archive/310101

= How To Fill a DataSet from an Oracle Stored Procedure by Using the OLE DB .NET Data Provider with Visual C# .NET =

Article ID: 310101

Article Last Modified on 7/14/2004

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APPLIES TO


 * Microsoft ADO.NET 1.0
 * Microsoft ADO.NET 1.1
 * Microsoft Visual C# .NET 2002 Standard Edition
 * Microsoft Visual C# .NET 2003 Standard Edition

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This article was previously published under Q310101



For a Microsoft Visual Basic .NET version of this article, see 308072.

This article refers to the following Microsoft .NET Framework Class Library namespace:
 * System.Data.OleDb

IN THIS TASK
SUMMARY
 * Requirements
 * Steps to Create Package in Oracle Database
 * Steps to Create Visual C# .NET Application

REFERENCES



SUMMARY
This article demonstrates how to fill a DataSet object with the result set from an Oracle stored procedure. The DataSet object is central to supporting disconnected, distributed data scenarios with ADO.NET. The DataSet is a memory-resident representation of data that provides a consistent, relational programming model regardless of the data source. The DataSet represents a complete set of data, including related tables, constraints, and relationships among the tables.

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Requirements
The following list outlines the recommended hardware, software, network infrastructure, and service packs that you need:
 * Microsoft Windows XP, Windows 2000, or Windows NT 4.0 Service Pack 6a
 * Microsoft Data Access Components (MDAC) 2.6 or later
 * Oracle 8.0 Server or later
 * Microsoft Visual Studio .NET
 * Oracle Client installed on the client computer

This article assumes that you are familiar with the following topics:
 * Data definition language (DDL) queries in Oracle
 * Visual C# .NET syntax
 * ActiveX Data Objects (ADO)

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Steps to Create Package in Oracle Database
  Use the following code to create a table named Person: CREATE TABLE person (ssn    NUMBER(9) PRIMARY KEY,           fname   VARCHAR2(15),           lname   VARCHAR2(20));

INSERT INTO person VALUES(555662222,'Sam','Goodwin');

INSERT INTO person VALUES(555882222,'Kent','Clark');

INSERT INTO person VALUES(666223333,'Sally','Burnett');

COMMIT;   Use the following code to create the package header: CREATE OR REPLACE PACKAGE packperson AS            TYPE tssn is TABLE of  NUMBER(10) INDEX BY BINARY_INTEGER; TYPE tfname is TABLE of VARCHAR2(15) INDEX BY BINARY_INTEGER; TYPE tlname is TABLE of VARCHAR2(20) INDEX BY BINARY_INTEGER;

PROCEDURE allperson (ssn   OUT     tssn,                      fname  OUT     tfname,                      lname  OUT     tlname); END packperson;

/                      Use the following code to create the package body: CREATE OR REPLACE PACKAGE BODY packperson AS

PROCEDURE allperson (ssn   OUT     tssn,                      fname  OUT     tfname,                      lname  OUT     tlname) IS            CURSOR person_cur IS                     SELECT ssn, fname, lname FROM person;

percount NUMBER DEFAULT 1;

BEGIN FOR singleperson IN person_cur LOOP ssn(percount) := singleperson.ssn; fname(percount) := singleperson.fname; lname(percount) := singleperson.lname; percount := percount + 1; END LOOP; END;

END; /                    

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Steps to Create Visual C# .NET Application
 Create a new Visual C# Windows Application project. Form1 is added to the project by default. Drag a DataGrid control and a Button control to Form1. DataGrid1 and Button1 are added to Form1 by default.  Add the following code after the first line, &quot;using System.Data,&quot; in the Code window: using System.Data.OleDb; </li>  Add the following code to the Button1_Click event: OleDbConnection cnOra = new OleDbConnection(&quot;Provider=MSDAORA;Data Source=myOracleServer;&quot;                                           + &quot;user id=myUID;password=myPWD;&quot;                                           + &quot;persist security info=false;&quot;); OleDbCommand cmdPerson = new OleDbCommand + (&quot;{call PackPerson.allPerson({resultset 3, ssn, fname, lname})}&quot;, cnOra); OleDbDataAdapter daPerson = new OleDbDataAdapter(cmdPerson);

cnOra.Open;

DataSet ds = new DataSet; daPerson.Fill(ds,&quot;Person&quot;); this.dataGrid1.DataSource = ds.Tables[&quot;Person&quot;];

cnOra.Close; </li> Press the F5 key to build and to run the application.</li> Click Button1. Notice that the results appear in the DataGrid control.</li></ol>

NOTE: Because only Oracle 8.0 and later support the retrieval of result sets and the execution of stored procedures, you must use an Oracle 8.x server to run this application.

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