DataTable.RowDeleted Event
Important
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Occurs after a row in the table has been deleted.
public:
event System::Data::DataRowChangeEventHandler ^ RowDeleted;
C#
public event System.Data.DataRowChangeEventHandler? RowDeleted;
C#
public event System.Data.DataRowChangeEventHandler RowDeleted;
C#
[System.Data.DataSysDescription("DataTableRowDeletedDescr")]
public event System.Data.DataRowChangeEventHandler RowDeleted;
member this.RowDeleted : System.Data.DataRowChangeEventHandler
[<System.Data.DataSysDescription("DataTableRowDeletedDescr")>]
member this.RowDeleted : System.Data.DataRowChangeEventHandler
Public Custom Event RowDeleted As DataRowChangeEventHandler
- Attributes
C#
private static void DataTableRowDeleted()
{
DataTable customerTable = new DataTable("Customers");
// add columns
customerTable.Columns.Add("id", typeof(int));
customerTable.Columns.Add("name", typeof(string));
customerTable.Columns.Add("address", typeof(string));
// set PrimaryKey
customerTable.Columns[ "id" ].Unique = true;
customerTable.PrimaryKey = new DataColumn[] { customerTable.Columns["id"] };
// add a RowDeleted event handler for the table.
customerTable.RowDeleted += new DataRowChangeEventHandler(Row_Deleted);
// add ten rows
for(int id=1; id<=10; id++)
{
customerTable.Rows.Add(
new object[] { id, string.Format("customer{0}", id),
string.Format("address{0}", id) });
}
customerTable.AcceptChanges();
// Delete all the rows
foreach(DataRow row in customerTable.Rows)
row.Delete();
}
private static void Row_Deleted(object sender, DataRowChangeEventArgs e)
{
Console.WriteLine("Row_Deleted Event: name={0}; action={1}",
e.Row["name", DataRowVersion.Original], e.Action);
}
Private Sub DataTableRowDeleted()
Dim customerTable As New DataTable("Customers")
' add columns
customerTable.Columns.Add("id", Type.GetType("System.Int32"))
customerTable.Columns.Add("name", Type.GetType("System.String"))
customerTable.Columns.Add("address", Type.GetType("System.String"))
' set PrimaryKey
customerTable.Columns("id").Unique = True
customerTable.PrimaryKey = New DataColumn() {customerTable.Columns("id")}
' add a RowDeleted event handler for the table.
AddHandler customerTable.RowDeleted, New _
DataRowChangeEventHandler(AddressOf Row_Deleted)
' add ten rows
Dim id As Integer
For id = 1 To 10
customerTable.Rows.Add( _
New Object() {id, String.Format("customer{0}", id), _
String.Format("address{0}", id)})
Next
customerTable.AcceptChanges()
' Delete all the rows
Dim row As DataRow
For Each row In customerTable.Rows
row.Delete()
Next
End Sub
Private Sub Row_Deleted(ByVal sender As Object, _
ByVal e As DataRowChangeEventArgs)
Console.WriteLine("Row_Deleted Event: name={0}; action={1}", _
e.Row("name", DataRowVersion.Original), e.Action)
End Sub
For more information, see Handling DataTable Events.
Produkt | Versiounen |
---|---|
.NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 2.0, 2.1 |
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