Event.Item Property (String)

Gets or sets the value of an event data field in the event record, using the field name as an identifier.

命名空間: Microsoft.SqlServer.NotificationServices
組件: Microsoft.SqlServer.NotificationServices (in microsoft.sqlserver.notificationservices.dll)

語法

'宣告
Public Default Property Item ( _
    fieldName As String _
) As Object

public Object this [
    string fieldName
] { get; set; }

public:
virtual property Object^ default [String^] {
    Object^ get (String^ fieldName) sealed;
    void set (String^ fieldName, Object^ value) sealed;
}

/** @property */
public final Object get_Item (String fieldName)

/** @property */
public final void set_Item (String fieldName, Object value)

參數

• fieldName
  The name of the event field.

屬性值

An Object that represents the field's value.

範例

The following example shows how to set the value of an event data field using the name of the field:

string instanceName = "Tutorial";
string applicationName = "Weather";
string eventClassName = "WeatherEvents";
string eventProviderName = "WeatherSPs";

// Create an NSInstance object.
NSInstance testInstance = new NSInstance(instanceName);

// Create an NSApplication object.
NSApplication testApplication =
    new NSApplication(testInstance, applicationName);

// Create an EventCollector object.
EventCollector testEventCollector =
    new EventCollector(testApplication, eventProviderName);

// Create and define an Event object.
Event evt = new Event(testApplication, eventClassName);
evt["City"] = "Seattle";
evt["Date"] = DateTime.Now;
evt["Low"] = 40;
evt["High"] = 50;
evt["Forecast"] = "Cloudy";

// Write the event to the event collector's batch
testEventCollector.Write(evt);

// Commit the event batch to the application database.
testEventCollector.Commit();

執行緒安全性

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

平台

開發平台

如需受支援的平台清單，請參閱＜安裝 SQL Server 2005 的硬體和軟體需求＞。

目標平台

如需受支援的平台清單，請參閱＜安裝 SQL Server 2005 的硬體和軟體需求＞。

請參閱

參考

Event Class
Event Members
Microsoft.SqlServer.NotificationServices Namespace