Task.WBSPredecessors 属性 (Project)

获取工作分解结构 (WBS) 代码的前置任务，以列表分隔符分隔。 只读 String。

语法

expression。 WBSPredecessors

表达 一个代表 Task 对象的变量。

示例

以下示例要求用户输入任务标识号，然后即可提供其前置任务的更易于识别的 WBS 代码分解形式。

Sub EnumeratePredecessors() 
 Dim Task As Task 
 Dim PredTasks As Tasks 
 Dim ID As Long 
 Dim Predecessors As String 
 Dim List As String 
 Dim Count As Integer 
 
 ID = CLng(InputBox$("Enter the ID number of the task you wish to examine:")) 
 
 Set Task = ActiveProject.Tasks(ID) 
 Set PredTasks = Task.PredecessorTasks 
 Predecessors = Task.WBSPredecessors 
 Count = 1 
 
 If PredTasks.Count = 0 Then 
 List = "Task " & Task.UniqueID & ", " & Task.Name & ", has no predecessors." 
 Else 
 List = "Predecessors to task " & Task.UniqueID & ", " & Task.Name & ":" & vbCrLf & vbCrLf 
 Do While InStr(Predecessors, ListSeparator) <> 0 
 List = List & PredTasks(Count).Name & ": " & Mid$(Predecessors, 1, InStr(Predecessors, ListSeparator) - 1) & vbCrLf 
 Predecessors = Right$(Predecessors, Len(Predecessors) - InStr(Predecessors, ListSeparator)) 
 Count = Count + 1 
 Loop 
 List = List & PredTasks(Count).Name & ": " & Predecessors 
 End If 
 
 MsgBox List 
 
 Set PredTasks = Nothing 
 Set Task = Nothing 
End Sub

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