ProjectTask
One task in a plan: a piece of work, a summary that groups other tasks, or a milestone.
public class ProjectTask : INotifyPropertyChangedInherits from / implements: INotifyPropertyChanged
Remarks
A task is a summary when another task names it as its ParentId; a summary's dates are worked out from its subtasks, so its own Start and Duration only hold the subtasks back. A task with a duration of zero, or with IsMilestone set, is a milestone. Dates are calendar dates. Only the date part of a DateTime is kept, so a value read from a database as midnight UTC and one typed as a local date plan the same day.
Members at a glance
ProjectTask | Creates an empty task. Give it at least an Id. |
ProjectTask | Creates a task with an id, a name and a length in working days. |
Assignee | Who is doing the work. The task board can split its lanes by this. |
BaselineFinish | The originally agreed last day. |
BaselineStart | The originally agreed start, drawn under the bar for comparison. |
Category | A grouping the application chooses. The task board can split its lanes by this. |
Constraint | How Start or Finish constrains the task. |
Duration | Length in working days. Zero makes the task a milestone. Null works it out from Start and Finish, and failing that it is one day. Negative values are read as zero. |
Finish | The planned last working day. Used when Duration is null, and as the date a FinishNoEarlierThan constraint holds. |
Id | Identifies the task in links, in ParentId and in every event the charts raise. Two tasks with the same id are reported as a problem, and the first is used. |
IsCollapsed | Whether a summary task starts with its subtasks hidden. |
IsMilestone | Draws the task as a milestone, whatever its duration says. |
Name | What the task is called, which is also what it is announced as. |
ParentId | The id of the summary task this one belongs to, or null for a top-level task. An id that is not in the plan puts the task at the top level and is reported as a problem. |
Progress | Percentage complete, 0 to 100. Values outside that range are clamped. |
Rank | Position on the task board within its column, lower first. The board writes this when a card is moved; nothing else reads it, so reordering a board never moves a date. |
Start | The planned start. The task is never scheduled before it, though its links may push it later. Null lets the task start as soon as its links and the project start allow. A weekend or holiday is read as the next working day. |
Status | The workflow state, such as "To do" or "Done". The task board's columns are these. |
Tag | Anything the application wants to keep with the task. The charts never read it. |
Clone | A copy of the task with every property, Tag included. |
OnPropertyChanged | Raises PropertyChanged. |
ToString | The name, for the debugger and for list boxes. |
PropertyChanged | Raised when any property changes. |
Constructors
ProjectTask
Creates an empty task. Give it at least an Id.
ProjectTask
Creates a task with an id, a name and a length in working days.
- id
- The task's id, unique in its plan.
- name
- What the task is called.
- duration
- Length in working days; zero makes a milestone. Null for a summary.
Properties
Assignee
Who is doing the work. The task board can split its lanes by this.
BaselineFinish
The originally agreed last day.
BaselineStart
The originally agreed start, drawn under the bar for comparison.
Category
A grouping the application chooses. The task board can split its lanes by this.
Constraint
How Start or Finish constrains the task.
Duration
Length in working days. Zero makes the task a milestone. Null works it out from Start and Finish, and failing that it is one day. Negative values are read as zero.
Finish
The planned last working day. Used when Duration is null, and as the date a FinishNoEarlierThan constraint holds.
Id
Identifies the task in links, in ParentId and in every event the charts raise. Two tasks with the same id are reported as a problem, and the first is used.
IsCollapsed
Whether a summary task starts with its subtasks hidden.
IsMilestone
Draws the task as a milestone, whatever its duration says.
Name
What the task is called, which is also what it is announced as.
ParentId
The id of the summary task this one belongs to, or null for a top-level task. An id that is not in the plan puts the task at the top level and is reported as a problem.
Progress
Percentage complete, 0 to 100. Values outside that range are clamped.
Rank
Position on the task board within its column, lower first. The board writes this when a card is moved; nothing else reads it, so reordering a board never moves a date.
Start
The planned start. The task is never scheduled before it, though its links may push it later. Null lets the task start as soon as its links and the project start allow. A weekend or holiday is read as the next working day.
Status
The workflow state, such as "To do" or "Done". The task board's columns are these.
Tag
Anything the application wants to keep with the task. The charts never read it.
Methods
Clone
A copy of the task with every property, Tag included.
Returns. The copy.
OnPropertyChanged
Raises PropertyChanged.
- propertyName
- The property that changed.
ToString
The name, for the debugger and for list boxes.
Returns. The task's name, or its id when it has none.
Events
PropertyChanged
Raised when any property changes.