OracleRowUpdatedEventArgs Class

Definition

Namespace:

System.Data.OracleClient

Assembly:

System.Data.OracleClient.dll

Provides data for the RowUpdated event. This class cannot be inherited.

C#

public sealed class OracleRowUpdatedEventArgs : System.Data.Common.RowUpdatedEventArgs

Inheritance

Object

EventArgs

RowUpdatedEventArgs

OracleRowUpdatedEventArgs

Examples

The following example shows how to use both the RowUpdating and RowUpdated events.

The RowUpdating event returns this output:

Event Arguments: (command=OracleCommand commandType=2status=0)

The RowUpdated event returns this output:

Event Arguments: (command= OracleCommend commandType=2 recordsAffected=1 row=System.Data.DataRow[37] status=0)

C#

// handler for RowUpdating event
 private static void OnRowUpdating(object sender, OracleRowUpdatingEventArgs e) {
    PrintEventArgs(e);
 }

 //Handler for RowUpdated event.
 private static void OnRowUpdated(object sender, OracleRowUpdatedEventArgs e) {
    PrintEventArgs(e);
 }

 public static int Main(String[] args) {
    const string CONNECTION_STRING = "Data Source=Oracle8i;Integrated Security=yes";
    const string SELECT_ALL = "SELECT * FROM Scott.Emp";

    //Create DataAdapter.
    OracleDataAdapter rAdapter = new OracleDataAdapter(SELECT_ALL, CONNECTION_STRING);
    OracleCommandBuilder cb = new OracleCommandBuilder(rAdapter);

    //Create and fill DataSet (Select only first 5 rows.).
    DataSet rDataSet = new DataSet();
    rAdapter.Fill(rDataSet, 0, 5, "Table");

    //Modify DataSet.
    DataTable rTable = rDataSet.Tables["Table"];
    rTable.Rows[0][1] = "DYZY";

    //Add handlers.
    rAdapter.RowUpdating += new OracleRowUpdatingEventHandler( OnRowUpdating );
    rAdapter.RowUpdated += new OracleRowUpdatedEventHandler( OnRowUpdated );

    //Update--this operation fires two events (RowUpdating and RowUpdated) for each changed row.
    rAdapter.Update(rDataSet, "Table");

    //Remove handlers.
    rAdapter.RowUpdating -= new OracleRowUpdatingEventHandler( OnRowUpdating );
    rAdapter.RowUpdated -= new OracleRowUpdatedEventHandler( OnRowUpdated );
    return 0;
 }

 private static void PrintEventArgs(OracleRowUpdatingEventArgs args) {
    Console.WriteLine("OnRowUpdating");
    Console.WriteLine("  event args: ("+
           " command=" + args.Command +
           " commandType=" + args.StatementType +
           " status=" + args.Status + ")");
 }

 private static void PrintEventArgs(OracleRowUpdatedEventArgs args) {
    Console.WriteLine("OnRowUpdated");
    Console.WriteLine( "  event args: ("+
           " command=" + args.Command +
           " commandType=" + args.StatementType +
           " recordsAffected=" + args.RecordsAffected +
           " status=" + args.Status + ")" );
 }

Remarks

The RowUpdated event is raised when an Update to a row is completed.

When using Update, there are two events that occur for each data row updated. The order of execution is as follows:

1. The values in the DataRow are moved to the parameter values.

2. The OnRowUpdating event is raised.

3. The command executes.

4. If the command is set to FirstReturnedRecord, the first returned result is placed in the DataRow.

5. If there are output parameters, they are placed in the DataRow.

6. The OnRowUpdated event is raised.

7. AcceptChanges is called.

Constructors

OracleRowUpdatedEventArgs(DataRow, IDbCommand, StatementType, DataTableMapping)

Initializes a new instance of the OracleRowUpdatedEventArgs class.

Properties

Command	Gets or sets the OracleCommand executed when Update(DataSet) is called.
Errors	Gets any errors generated by the .NET data provider when the Command was executed. (Inherited from RowUpdatedEventArgs)
RecordsAffected	Gets the number of rows changed, inserted, or deleted by execution of the SQL statement. (Inherited from RowUpdatedEventArgs)
Row	Gets the DataRow sent through an Update(DataSet). (Inherited from RowUpdatedEventArgs)
RowCount	Gets the number of rows processed in a batch of updated records. (Inherited from RowUpdatedEventArgs)
StatementType	Gets the type of SQL statement executed. (Inherited from RowUpdatedEventArgs)
Status	Gets the UpdateStatus of the Command property. (Inherited from RowUpdatedEventArgs)
TableMapping	Gets the DataTableMapping sent through an Update(DataSet). (Inherited from RowUpdatedEventArgs)

Methods

CopyToRows(DataRow[], Int32)	Copies references to the modified rows into the provided array. (Inherited from RowUpdatedEventArgs)
CopyToRows(DataRow[])	Copies references to the modified rows into the provided array. (Inherited from RowUpdatedEventArgs)
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Applies to