Database.Events 属性
Gets the events associated with the database.
命名空间: Microsoft.SqlServer.Management.Smo
程序集: Microsoft.SqlServer.Smo(在 Microsoft.SqlServer.Smo.dll 中)
语法
声明
Public ReadOnly Property Events As DatabaseEvents
Get
用法
Dim instance As Database
Dim value As DatabaseEvents
value = instance.Events
public DatabaseEvents Events { get; }
public:
property DatabaseEvents^ Events {
DatabaseEvents^ get ();
}
member Events : DatabaseEvents
function get Events () : DatabaseEvents
属性值
类型:Microsoft.SqlServer.Management.Smo.DatabaseEvents
A DatabaseEvents object that represents the database events.
注释
The Events property refers to server events or Windows Management Instrumentation (WMI) events that are associated with the database.
示例
VB
'Create an event handler subroutine that runs when a table is created.
Private Sub MyCreateEventHandler(ByVal sender As Object, ByVal e As ServerEventArgs)
Console.WriteLine("A table has just been added to the AdventureWorks2012 2008 database.")
End Sub
'Create an event handler subroutine that runs when a table is deleted.
Private Sub MyDropEventHandler(ByVal sender As Object, ByVal e As ServerEventArgs)
Console.WriteLine("A table has just been dropped from the AdventureWorks2012 2008 database.")
End Sub
Sub Main()
'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2012 database.
Dim db As Database
db = srv.Databases("AdventureWorks2012")
'Create a database event set that contains the CreateTable event only.
Dim databaseCreateEventSet As New DatabaseEventSet
databaseCreateEventSet.CreateTable = True
'Create a server event handler and set it to the first event handler subroutine.
Dim serverCreateEventHandler As ServerEventHandler
serverCreateEventHandler = New ServerEventHandler(AddressOf MyCreateEventHandler)
'Subscribe to the first server event handler when a CreateTable event occurs.
db.Events.SubscribeToEvents(databaseCreateEventSet, serverCreateEventHandler)
'Create a database event set that contains the DropTable event only.
Dim databaseDropEventSet As New DatabaseEventSet
databaseDropEventSet.DropTable = True
'Create a server event handler and set it to the second event handler subroutine.
Dim serverDropEventHandler As ServerEventHandler
serverDropEventHandler = New ServerEventHandler(AddressOf MyDropEventHandler)
'Subscribe to the second server event handler when a DropTable event occurs.
db.Events.SubscribeToEvents(databaseDropEventSet, serverDropEventHandler)
'Start event handling.
db.Events.StartEvents()
'Create a table on the database.
Dim tb As Table
tb = New Table(db, "Test_Table")
Dim mycol1 As Column
mycol1 = New Column(tb, "Name", DataType.NChar(50))
mycol1.Collation = "Latin1_General_CI_AS"
mycol1.Nullable = True
tb.Columns.Add(mycol1)
tb.Create()
'Remove the table.
tb.Drop()
'Wait until the events have occured.
Dim x As Integer
Dim y As Integer
For x = 1 To 1000000000
y = x * 2
Next
'Stop event handling.
db.Events.StopEvents()
End Sub
PowerShell
Function MyCreateEventHandler($sender, $e)
{
Write-Host "A table has just been added to the AdventureWorks2012 database."
}
Function MyDropEventHandler($sender, $e)
{
Write-Host "A table has just been dropped from the AdventureWorks2012 database."
}
$srv = new-Object Microsoft.SqlServer.Management.Smo.Server("(local)")
$db = New-Object Microsoft.SqlServer.Management.Smo.Database
$db = $srv.Databases.Item("AdventureWorks2012")
$databaseCreateEventSet = new-object Microsoft.SqlServer.Management.Smo.DatabaseEventSet
$databaseCreateEventSet.CreateTable = $TRUE
$serverCreateEventHandler = new-object Microsoft.SqlServer.Management.Smo.ServerEventHandler(AddressOf MyCreateEventHandler)
$db.Events.SubscribeToEvents(databaseCreateEventSet, serverCreateEventHandler)
$databaseDropEventSet = new-object Microsoft.SqlServer.Management.Smo.DatabaseEventSet
$databaseDropEventSet.DropTable = $TRUE
$serverDropEventHandler = new-object Microsoft.SqlServer.Management.Smo.ServerEventHandler(AddressOf MyDropEventHandler)
$db.Events.SubscribeToEvents(databaseDropEventSet, serverDropEventHandler)
$db.Events.StartEvents()
$tb = new-object Microsoft.SqlServer.Management.Smo.Table($db, "Test Table")
$mycol1 = new-object Microsoft.SqlServer.Management.Smo.Column($tb, "Name", [Microsoft.SqlServer.Management.Smo.DataType]::NChar(50))
$mycol1.Collation = "Latin1_General_CI_AS"
$mycol1.Nullable = $FALSE
$tb.Columns.Add($mycol1)
$tb.Create()
$tb.Drop()
$y = 0
For ($x=1; $x -le 1000000000; $x++)
{
$y = $x*2
}
$db.Events.StopEvents()
请参阅
参考
Microsoft.SqlServer.Management.Smo 命名空间
其他资源
Handling Events (SMO)