Provides data for the RowUpdating event.
Assembly: System.Data (in System.Data.dll)
Thetype exposes the following members.
|BaseCommand||Gets or sets the IDbCommand object for an instance of this class. (Inherited from RowUpdatingEventArgs.)|
|Command||Gets or sets the SqlCommand to execute when performing the Update.|
|Errors||Gets any errors generated by the .NET Framework data provider when the Command executes. (Inherited from RowUpdatingEventArgs.)|
|Row||Gets the DataRow that will be sent to the server as part of an insert, update, or delete operation. (Inherited from RowUpdatingEventArgs.)|
|StatementType||Gets the type of SQL statement to execute. (Inherited from RowUpdatingEventArgs.)|
|Status||Gets or sets the UpdateStatus of the Command property. (Inherited from RowUpdatingEventArgs.)|
|TableMapping||Gets the DataTableMapping to send through the Update. (Inherited from RowUpdatingEventArgs.)|
|Equals(Object)||Determines whether the specified Object is equal to the current Object. (Inherited from Object.)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)|
|GetHashCode||Serves as a hash function for a particular type. (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.)|
When you are using Update, there are two events that occur for each data row updated. The order of execution is as follows:
The values in the DataRow are moved to the parameter values.
The OnRowUpdating event is raised.
The command executes.
If the command is set to FirstReturnedRecord, and the first returned result is placed in the DataRow.
If there are output parameters, they are placed in the DataRow.
The OnRowUpdated event is raised.
AcceptChanges is called.
The RowUpdating event returns this output:
event args: (command=System.Data.SqlClient.SQLCommand commandType=2 status=0)
The RowUpdated event returns this output:
event args: (command=System.Data.SqlClient.SQLCommand commandType=2 recordsAffected=1 row=System.Data.DataRow status=0)
'Handler for RowUpdating event. Private Shared Sub OnRowUpdating(sender As Object, e As SqlRowUpdatingEventArgs) PrintEventArgs(e) End Sub 'Handler for RowUpdated event. Private Shared Sub OnRowUpdated(sender As Object, e As SqlRowUpdatedEventArgs) PrintEventArgs(e) End Sub 'Entry point which delegates to C-style main Private Function. Public Overloads Shared Sub Main() System.Environment.ExitCode = Main(System.Environment.GetCommandLineArgs()) End Sub Overloads Public Shared Function Main(args() As String) As Integer Const CONNECTION_STRING As String = "Persist Security Info=False;Integrated Security=SSPI;database=northwind;server=mySQLServer" Const SELECT_ALL As String = "select * from Products" 'Create DataAdapter. Dim rAdapter As New SqlDataAdapter(SELECT_ALL, CONNECTION_STRING) 'Create and fill DataSet (Select only first 5 rows.). Dim rDataSet As New DataSet() rAdapter.Fill(rDataSet, 0, 5, "Table") 'Modify DataSet. Dim rTable As DataTable = rDataSet.Tables("Table") rTable.Rows(0)(1) = "new product" 'Add handlers. AddHandler rAdapter.RowUpdating, AddressOf OnRowUpdating AddHandler rAdapter.RowUpdated, AddressOf OnRowUpdated 'Update--this operation fires two events (RowUpdating and RowUpdated) for each changed row. rAdapter.Update(rDataSet, "Table") 'Remove handlers. RemoveHandler rAdapter.RowUpdating, AddressOf OnRowUpdating RemoveHandler rAdapter.RowUpdated, AddressOf OnRowUpdated Return 0 End Function Overloads Private Shared Sub PrintEventArgs(args As SqlRowUpdatingEventArgs) Console.WriteLine("OnRowUpdating") Console.WriteLine(" event args: (" & _ " command=" & _ args.Command.CommandText & _ " commandType=" & _ args.StatementType & _ " status=" & _ args.Status & _ ")") End Sub Overloads Private Shared Sub PrintEventArgs(args As SqlRowUpdatedEventArgs) Console.WriteLine("OnRowUpdated") Console.WriteLine(" event args: (" & _ " command=" & _ args.Command.CommandText & _ " commandType=" & _ args.StatementType & _ " recordsAffected=" & _ args.RecordsAffected & _ " status=" & _ args.Status & _ ")") End Sub
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.