public string ResourceLinksPath { get; set; }

Public Property ResourceLinksPath As String

<dxgn:GanttControl ItemsSource="{Binding Tasks}">
    <dxgn:GanttColumn BindTo="Name" Width="Auto"/>
    <dxgn:GanttColumn BindTo="ResourceLinks" AllowEditing="True"/>
    <dxgn:GanttControl.View>
        <dxgn:GanttView ResourcesSource="{Binding Resources}"
                        ResourceLinksPath="ResourceIds"
                        ChildNodesPath="Children"
                        TreeDerivationMode="ChildNodesSelector"
                        StartDateMapping="StartDate"
                        FinishDateMapping="{dxgn:Mapping FinishDate}"
                        NameMapping="{dxgn:Mapping Name}">
            <dxgn:GanttView.ResourceMappings>
                <dxgn:GanttResourceMappings Name="Name" Key="Id"/>
            </dxgn:GanttView.ResourceMappings>
            <dxgn:GanttView.ResourceLinkMappings>
                <dxgn:GanttResourceLinkMappings Resource="."/>
            </dxgn:GanttView.ResourceLinkMappings>
        </dxgn:GanttView>
    </dxgn:GanttControl.View>
</dxgn:GanttControl>

public class BindResourcesWithoutLinksViewModel {
    public BindResourcesWithoutLinksViewModel() {
        // ...
        Tasks = new List<GanttDataItemWithResources> {
            new GanttDataItemWithResources {
                StartDate = startDate,
                FinishDate = startDate + TimeSpan.FromDays(5),
                Name = "Market Analysis",
                ResourceIds = new List<int>() { 1 }
            },
            new GanttDataItemWithResources {
                Name = "Feature Planning",
                StartDate = startDate + TimeSpan.FromDays(5),
                FinishDate = startDate + TimeSpan.FromDays(9),
                ResourceIds = new List<int>() { 1, 2 }
            },
            new GanttDataItemWithResources {
                Name = "Feature 1",
                StartDate = startDate + TimeSpan.FromDays(9),
                FinishDate = startDate + TimeSpan.FromDays(16),
                Children = new[] {
                    new GanttDataItemWithResources {
                        Name = "Implementation",
                        StartDate = startDate + TimeSpan.FromDays(9),
                        FinishDate = startDate + TimeSpan.FromDays(13),
                        ResourceIds = new List<int>() { 2 }
                    },
                    new GanttDataItemWithResources {
                        Name = "Demos & Docs",
                        StartDate = startDate + TimeSpan.FromDays(13),
                        FinishDate = startDate + TimeSpan.FromDays(16),
                        ResourceIds = new List<int>() { 4, 2 }
                    }
                },
            },
            // ...
        };

        Resources = new List<GanttResourceItem> {
            new GanttResourceItem { Name = "Management", Id = 1 },
            new GanttResourceItem { Name = "Developers", Id = 2 },
            new GanttResourceItem { Name = "Testers", Id = 3 },
            new GanttResourceItem { Name = "Technical Writers", Id = 4 }
        };
    }

    public IEnumerable<GanttDataItemWithResources> Tasks { get; private set; }
    public IEnumerable<GanttResourceItem> Resources { get; private set; }
}

public class GanttDataItemWithResources : GanttDataItem {
    public List<int> ResourceIds { get; set; }
}

public class GanttResourceItem {
    public string Name { get; set; }
    public int Id { get; set; }
}

Public Class BindResourcesWithoutLinksViewModel
    Public Sub New()
        ' ...
        Tasks = New List(Of GanttDataItemWithResources) From {
            New GanttDataItemWithResources With {
                .StartDate = startDate,
                .FinishDate = startDate + TimeSpan.FromDays(5),
                .Name = "Market Analysis",
                .ResourceIds = New List(Of Integer)() From { 1 }
            },
            New GanttDataItemWithResources With {
                .Name = "Feature Planning",
                .StartDate = startDate + TimeSpan.FromDays(5),
                .FinishDate = startDate + TimeSpan.FromDays(9),
                .ResourceIds = New List(Of Integer)() From { 1, 2 }
            },
            New GanttDataItemWithResources With {
                .Name = "Feature 1",
                .StartDate = startDate + TimeSpan.FromDays(9),
                .FinishDate = startDate + TimeSpan.FromDays(16),
                .Children = {New GanttDataItemWithResources With {
                    .Name = "Implementation",
                    .StartDate = startDate + TimeSpan.FromDays(9),
                    .FinishDate = startDate + TimeSpan.FromDays(13),
                    .ResourceIds = New List(Of Integer)() From { 2 }
                }, New GanttDataItemWithResources With {
                    .Name = "Demos & Docs",
                    .StartDate = startDate + TimeSpan.FromDays(13),
                    .FinishDate = startDate + TimeSpan.FromDays(16),
                    .ResourceIds = New List(Of Integer)() From { 4, 2 }
                }}
                ' ...
            }
        }
        Resources = New List(Of GanttResourceItem) From {
            New GanttResourceItem With { .Name = "Management", .Id = 1 },
            New GanttResourceItem With { .Name = "Developers", .Id = 2 },
            New GanttResourceItem With { .Name = "Testers", .Id = 3 },
            New GanttResourceItem With { .Name = "Technical Writers", .Id = 4 }
        }
    End Sub

    Public Property Tasks As IEnumerable(Of GanttDataItemWithResources)
    Public Property Resources As IEnumerable(Of GanttResourceItem)
End Class

Public Class GanttDataItemWithResources
    Inherits GanttDataItem

    Public Property ResourceIds As List(Of Integer)
End Class

Public Class GanttResourceItem
    Public Property Name As String
    Public Property Id As Integer
End Class