6.10 OracleDataAdapter Class
An OracleDataAdapter object represents a data provider object that populates the DataSet and updates changes in the DataSet to the Oracle database.
Class Inheritance
System.Object
System.MarshalByRefObject
System.ComponentModel.Component
System.Data.Common.DataAdapter
System.Data.Common.DbDataAdapter
Oracle.DataAccess.Client.OracleDataAdapter
Declaration
// C# public sealed class OracleDataAdapter : DbDataAdapter, IDbDataAdapter
Requirements
| Provider | ODP.NET, Unmanaged Driver | ODP.NET, Managed Driver |
|---|---|---|
|
Assembly |
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Namespace |
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.NET Framework |
3.5, 4.5, 4.6, 4.7 |
4.5, 4.6, 4.7 |
Thread Safety
All public static methods are thread-safe, although instance methods do not guarantee thread safety.
Example
The following example uses the OracleDataAdapter and the dataset to update the EMP table:
// C#
using System;
using System.Data;
using Oracle.DataAccess.Client;
class OracleDataAdapterSample
{
static void Main()
{
string constr = "User Id=scott;Password=tiger;Data Source=oracle";
string cmdstr = "SELECT empno, sal from emp";
// Create the adapter with the selectCommand txt and the
// connection string
OracleDataAdapter adapter = new OracleDataAdapter(cmdstr, constr);
// Create the builder for the adapter to automatically generate
// the Command when needed
OracleCommandBuilder builder = new OracleCommandBuilder(adapter);
// Create and fill the DataSet using the EMP
DataSet dataset = new DataSet();
adapter.Fill(dataset, "EMP");
// Get the EMP table from the dataset
DataTable table = dataset.Tables["EMP"];
// Indicate DataColumn EMPNO is unique
// This is required by the OracleCommandBuilder to update the EMP table
table.Columns["EMPNO"].Unique = true;
// Get the first row from the EMP table
DataRow row = table.Rows[0];
// Update the salary
double sal = double.Parse(row["SAL"].ToString());
row["SAL"] = sal + .01;
// Now update the EMP using the adapter
// The OracleCommandBuilder will create the UpdateCommand for the
// adapter to update the EMP table
adapter.Update(dataset, "EMP");
Console.WriteLine("Row updated successfully");
}
}