这个教程示范如何添加GanttControl 到你的项目使用内置GanttControl数据类。

要求

添加 Devexpress.Wpf.Gantt Nuget包到你的项目使用GanttControl.

数据模型

GanttControl携带和内置数据对象，可以使用创建视图模型：

GanttTask

呈现甘特图任务

GanttPredecessorLink

呈现任务关系

GanttTask类曝光如下属性：

属性	描述
Id	指定任务id
ParentId	指定任务父id
StartDate	指定任务开始日期
FinishDate	指定任务结束日期
Progress	指定任务进程
Name	指定任务名称和标题
BaselineStartDate	指定任务基线开始日期
BaselineFinishDate	指定任务基线完成日期
PredecessorLinks	提供访问任务记录集合

Id和ParentId属性允许组织任务等级体系在空白数据集合

GanttPredecessorLink提供如下属性

属性	描述
PredecessorTask Id	指定访问记录Id
LinkType	指定任务关系类型（完成ToStart，FinishToFinish，等等）
Lag	指定依赖时间lag

添加视图模型

创建视图模型类暴露Tasks属性ObservableCollection<GanttTask>类型

代码例子如下示范了视图模型

using DevExpress.Mvvm.Gantt;
using System;
using System.Collections.ObjectModel;namespace GanttControlDemoApp {public class ProjectTaskViewModel {public ObservableCollection<GanttTask> Tasks { get; set; }public ProjectTaskViewModel() {Tasks = new ObservableCollection<GanttTask> {new GanttTask() {Id = 0,Name = "Add a new feature",StartDate = DateTime.Now.AddDays(-1),FinishDate = DateTime.Now.AddDays(6)},new GanttTask() {Id =1, ParentId = 0,Name = "Write the code",StartDate = DateTime.Now.AddDays(-1),FinishDate = DateTime.Now.AddDays(2)},new GanttTask() {Id = 2,ParentId = 0,Name = "Write the docs",StartDate = DateTime.Now.AddDays(2),FinishDate = DateTime.Now.AddDays(5)},new GanttTask() {Id = 3,ParentId = 0,Name = "Test the new feature",StartDate = DateTime.Now.AddDays(2),FinishDate = DateTime.Now.AddDays(5)},new GanttTask() {Id = 4,ParentId = 0,Name = "Release the new feature",StartDate = DateTime.Now.AddDays(5),FinishDate = DateTime.Now.AddDays(6),}};}}
}

添加Gantt Control到视图

添加GanttControl到项目

打开vs工具箱，找到DX.18.2:Data & Analytics 页面，拖动GanttControl 工具箱内容，拖动到window控件

传递视图模型到视图DataContext属性，绑定GanttControl的ItemsSource属性到视图模型Task属性

<Windowxmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="clr-namespace:GanttControlDemoApp"xmlns:dxgn="http://schemas.devexpress.com/winfx/2008/xaml/gantt" x:Class="GanttControlDemoApp.MainWindow"><Window.DataContext><local:ProjectTaskViewModel /></Window.DataContext><Grid><dxgn:GanttControl ItemsSource="{Binding Tasks}" /></Grid>
</Window> 

图片如下演示了结果

GanttControl显示统计任务和折叠子任务。显示数据行和任务属性和显示所有任务

添加任务行

使用控件的GanttControl.Columns属性添加行

甘特图行显示通过GanttColumn类。绑定行到任何任务标准属性使用BindTo 属性。像如下代码

<dxgn:GanttControl ItemsSource="{Binding Tasks}"><dxgn:GanttControl.Columns><dxgn:GanttColumn BindTo="Name" /><dxgn:GanttColumn BindTo="StartDate" /><dxgn:GanttColumn BindTo="FinishDate" /></dxgn:GanttControl.Columns>
</dxgn:GanttControl>

设置GanttView

GanttView指定甘特图表内容和显示

扩展所有甘特图任务当控件加载。设置AutoExpandAllNodes属性为true。可以显示和编辑和排序内容被设置视图AllowEditing和AllowSorting属性为false，像下面的代码例子

<Windowxmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:local="clr-namespace:GanttControlDemoApp"xmlns:dxgn="http://schemas.devexpress.com/winfx/2008/xaml/gantt" x:Class="GanttControlDemoApp.MainWindow"><Window.DataContext><local:ProjectTaskViewModel /></Window.DataContext><Grid><dxgn:GanttControl ItemsSource="{Binding Tasks}"><dxgn:GanttControl.Columns><dxgn:GanttColumn BindTo="Name" /><dxgn:GanttColumn BindTo="StartDate" /><dxgn:GanttColumn BindTo="FinishDate" /></dxgn:GanttControl.Columns><dxgn:GanttControl.View><dxgn:GanttView AutoExpandAllNodes="True" AllowEditing="False" AllowSorting="False"/></dxgn:GanttControl.View></dxgn:GanttControl></Grid>
</Window>

下面的图片演示了结果

任务依赖

每一个任务暴露了PredecessorLinks属性。属性提供了访问GanttPredecessorLink集合对象。每一个GanttPredecessorLink对象包含任务访问记录id和相对的链接类型

添加如下代码到视图模型

// the "Release the new feature" task can begin only when the "Write the docs" task is complete
Tasks[4].PredecessorLinks.Add(new GanttPredecessorLink() { PredecessorTaskId = 2, LinkType = PredecessorLinkType.FinishToStart });
// the "Release the new feature" task can begin only when the "Test the new feature" task is complete
Tasks[4].PredecessorLinks.Add(new GanttPredecessorLink() { PredecessorTaskId = 3, LinkType = PredecessorLinkType.FinishToStart });
// the "Write the docs" task can begin only when the "Write the code" task is complete
Tasks[2].PredecessorLinks.Add(new GanttPredecessorLink() { PredecessorTaskId = 1, LinkType = PredecessorLinkType.FinishToStart });
// the "Test the new feature" task can begin only when the "Write the code" task is complete
Tasks[3].PredecessorLinks.Add(new GanttPredecessorLink() { PredecessorTaskId = 1, LinkType = PredecessorLinkType.FinishToStart });

现在，GanttControl显示任务关系。如下图片显示结果