DevExpress WPF使用技巧教程：WPF Gantt - Resources

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通過DevExpress WPF Controls，您能創(chuàng)建有著強(qiáng)大互動功能的XAML基礎(chǔ)應(yīng)用程序，這些應(yīng)用程序?qū)Ｗ⒂诋?dāng)代客戶的需求和構(gòu)建未來新一代支持觸摸的解決方案。

WPF Gantt控件（v20.1）允許您根據(jù)需要將資源分配給各個任務(wù)，資源可以是成功完成實(shí)際任務(wù)所需的一切（從個人和員工到物理設(shè)備和資產(chǎn)）。

資源綁定

使用 ResourcesSource 屬性將WPF Gantt控件綁定到資源集合。

<dxgn:GanttControl ItemsSource="{Binding Items}">
<dxgn:GanttControl.Columns>
<dxgn:GanttColumn BindTo="Name"/>
<dxgn:GanttColumn BindTo="StartDate"/>
<dxgn:GanttColumn BindTo="FinishDate"/>
</dxgn:GanttControl.Columns>
<dxgn:GanttControl.View>
<dxgn:GanttView ResourcesSource="{Binding Resources}" ... />
</dxgn:GanttControl.View>
</dxgn:GanttControl>

public class StartupBusinessPlanViewModel {
public List<GanttTask> Items { get; private set; }
public List<GanttResource> Resources { get; private set; }
// ...

public StartupBusinessPlanViewModel() {
this.Items = CreateData();
this.Resources = CreateResources();
// ...
}

List<GanttTask> CreateData() {
var tasks = new List<GanttTask>();
// ...
tasks.Add(new GanttTask { Id = 53,
ParentId = 48,
Name = "Describe strengths, weaknesses, assets and threats",
StartDate = new DateTime(2019, 1, 9, 13, 0, 0),
FinishDate = new DateTime(2019, 1, 10, 12, 0, 0),
});
tasks.Add(new GanttTask { Id = 54,
ParentId = 48,
Name = "Estimate sales volume during startup period",
StartDate = new DateTime(2019, 1, 10, 13, 0, 0),
FinishDate = new DateTime(2019, 1, 11, 12, 0, 0),
});
// ...
return tasks;
}
List<GanttResource> CreateResources() {
var resources = new List<GanttResource>();
resources.Add(new GanttResource { Name = "Business Advisor", Id = 1 });
resources.Add(new GanttResource { Name = "Peers", Id = 2 });
resources.Add(new GanttResource { Name = "Lawyer", Id = 3 });
resources.Add(new GanttResource { Name = "Government Agency", Id = 4 });
resources.Add(new GanttResource { Name = "Manager", Id = 5 });
resources.Add(new GanttResource { Name = "Owners", Id = 6 });
resources.Add(new GanttResource { Name = "Accountant", Id = 7 });
resources.Add(new GanttResource { Name = "Banker", Id = 8 });
resources.Add(new GanttResource { Name = "Information Services", Id = 9 });
return resources;
}
}

上面的代碼示例使用MVVM庫中提供的內(nèi)置數(shù)據(jù)類，但是您也可以將WPF Gantt控件鏈接到您的自定義資源類。

檢索資源依賴項(xiàng)

將WPF甘特圖控件綁定到資源后，將這些資源分配給任務(wù)。 您的數(shù)據(jù)源可以通過以下方式存儲資源依賴性：

• 在一個單獨(dú)的集合中，其中每個元素都包含一個任務(wù) - 資源對。
• 在包含有關(guān)其資源信息的任務(wù)對象中。

檢索存儲在單獨(dú)集合中的資源依賴項(xiàng)

收集項(xiàng)目應(yīng)包含任務(wù)和資源字段。

public class GanttResourceLink {
public object TaskId { get; set; }
public object ResourceId { get; set; }
}

將ResourceLinksSource屬性綁定到資源依賴項(xiàng)的集合（由下面的代碼示例中的ResourceLinks ViewModel屬性公開）。

<dxgn:GanttControl ItemsSource="{Binding Tasks}">
<dxgn:GanttControl.View>
<dxgn:GanttView ...
ResourcesSource="{Binding Resources}"
ResourceLinksSource="{Binding ResourceLinks}">
</dxgn:GanttView>
</dxgn:GanttControl.View>
</dxgn:GanttControl>

檢索存儲在任務(wù)對象中的資源依賴關(guān)系

收集項(xiàng)目應(yīng)包含一個資源字段。

public class GanttResourceLink {
public object ResourceId { get; set; }
}

任務(wù)對象應(yīng)提供對任務(wù)資源集合的訪問。

public class GanttTask {
public object Id { get; set; }
public object ParentId { get; set; }
public string Name { get; set; }
public DateTime? StartDate { get; set; }
public DateTime? FinishDate { get; set; }
public ObservableCollection<GanttResourceLink> ResourceLinks { get; set; }
// ...
}

將資源依賴關(guān)系數(shù)據(jù)字段的路徑分配給GanttView.ResourceLinksPath屬性（由下面的代碼示例中的ResourceLinks任務(wù)屬性公開）。

<dxgn:GanttControl ItemsSource="{Binding Tasks}">
<dxgn:GanttControl.View>
<dxgn:GanttView ...
ResourcesSource="{Binding Resources}"
ResourceLinksPath="ResourceLinks">
</dxgn:GanttView>
</dxgn:GanttControl.View>
</dxgn:GanttControl>

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