LifetimeInformation 接口
用于确定对象是否已被删除但未被垃圾回收器丢弃。
命名空间： EnvDTE80
程序集： EnvDTE80（在 EnvDTE80.dll 中）
语法
声明
<GuidAttribute("C8F4F9CC-B7E5-4458-BCE3-E1542468F26B")> _
Public Interface LifetimeInformation
[GuidAttribute("C8F4F9CC-B7E5-4458-BCE3-E1542468F26B")]
public interface LifetimeInformation
[GuidAttribute(L"C8F4F9CC-B7E5-4458-BCE3-E1542468F26B")]
public interface class LifetimeInformation
[<GuidAttribute("C8F4F9CC-B7E5-4458-BCE3-E1542468F26B")>]
type LifetimeInformation = interface end
public interface LifetimeInformation
LifetimeInformation 类型公开以下成员。
属性
| 名称 | 说明 | |
|---|---|---|
.gif "公共属性") |
HasBeenDeleted | 获取一个值，该值指示对象是否已被删除但尚未被垃圾回收器丢弃。 |
页首
备注
使用 LifetimeInformation 的查询接口 (QI) 确定对象是否已被删除但尚未被垃圾回收器丢弃。
示例
Sub TaskItemObjectLifetime(ByVal DTE As DTE2)
Dim tskItem As TaskItem
Dim tskItems As EnvDTE.TaskItems
Dim lifetimeInfo As LifetimeInformation
tskItems = DTE.ToolWindows.TaskList.TaskItems
tskItem = tskItems.Add("Category", "SubCategory", "Description", _
vsTaskPriority.vsTaskPriorityLow, EnvDTE.vsTaskIcon. _
vsTaskIconUser, True, "", -1, True, True)
tskItems.ForceItemsToTaskList()
lifetimeInfo = tskItem
MsgBox("Has task item been deleted? " & _
lifetimeInfo.HasBeenDeleted.ToString)
tskItem.Delete()
MsgBox("Has task item been deleted? " & _
lifetimeInfo.HasBeenDeleted.ToString)
End Sub
public void TaskItemObjectLifetime(DTE2 DTE)
{
TaskItem tskItem;
EnvDTE.TaskItems tskItems;
LifetimeInformation lifetimeInfo;
tskItems = DTE.ToolWindows.TaskList.TaskItems;
tskItem = tskItems.Add("Category", "SubCategory", "Description",
vsTaskPriority.vsTaskPriorityLow,
EnvDTE.vsTaskIcon.vsTaskIconUser, true, "", -1, true, true);
tskItems.ForceItemsToTaskList();
lifetimeInfo = (LifetimeInformation)tskItem;
MessageBox.Show("Has task item been deleted? " +
lifetimeInfo.HasBeenDeleted);
tskItem.Delete();
MessageBox.Show("Has task item been deleted? " +
lifetimeInfo.HasBeenDeleted);
}