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我有兩個域類：父和子。 父母有一個孩子的列表。當我使用域服務檢索父對象的名單，我想檢索每個家長的children.Here是域類，域服務和客戶端代碼：wcf ria服務 - 與父母子女關係的poco
public class Parent
{
private IList<Child> children;
[Key]
public virtual int ParentId { get; set; }
public Parent()
{
children = new List<Child>();
}
public virtual string Name { get; set; }
[Include()]
[Association("ParentChild", "ParentId", "ChildId", IsForeignKey = false)]
public virtual IList<Child> Children
{
get { return children; ; }
set { children = value; }
}
public virtual void AddChild(Child child)
{
child.Parent = this;
Children.Add(child);
}
}
public class Child
{
[Key]
public virtual int ChildId { get; set; }
public virtual String Name { get; set; }
public virtual String Action { get; set; }
[Include]
[Association("ParentChild", "ChildId", "ParentId", IsForeignKey = true)]
public virtual Parent Parent { get; set; }
}
域名服務：
[EnableClientAccess()]
public class ParentDomainService : DomainService
{
public IList<Parent> GetParents()
{
var system = new Parent() { ParentId = 1, Name = "System1" };
system.AddChild(new Child()
{
Action = "Action1",
ChildId = 3,
Name = "File1"
});
system.AddChild(new Child()
{
Action = "Action2",
ChildId = 5,
Name = "File2"
});
var result = new List<Parent>() {system};
return result;
}
}
Silverlight的GUI代碼：只是一個事件處理程序的按鈕：
private void button1_Click(object sender, RoutedEventArgs e)
{
var context = new ParentDomainContext();
var entityQuery = context.GetParentsQuery();
context.Load(entityQuery,OnParentsLoaded,null);
}
private void OnParentsLoaded(LoadOperation<Parent> obj)
{
var fileSystem = obj.Entities.FirstOrDefault();
if (fileSystem != null)
{
var memoryFiles = fileSystem.Children.ToList();
}
}
孩子們失蹤了！
請，如果有人可以幫忙，我看不到什麼是缺少的。
在客戶端上生成的代碼：
/// <summary>
/// The 'Child' entity class.
/// </summary>
[DataContract(Namespace="http://schemas.datacontract.org/2004/07/WordsBuilder.DomainModel")]
public sealed partial class Child : Entity
{
private string _action;
private int _childId;
private string _name;
private EntityRef<Parent> _parent;
#region Extensibility Method Definitions
/// <summary>
/// This method is invoked from the constructor once initialization is complete and
/// can be used for further object setup.
/// </summary>
partial void OnCreated();
partial void OnActionChanging(string value);
partial void OnActionChanged();
partial void OnChildIdChanging(int value);
partial void OnChildIdChanged();
partial void OnNameChanging(string value);
partial void OnNameChanged();
#endregion
/// <summary>
/// Initializes a new instance of the <see cref="Child"/> class.
/// </summary>
public Child()
{
this.OnCreated();
}
/// <summary>
/// Gets or sets the 'Action' value.
/// </summary>
[DataMember()]
public string Action
{
get
{
return this._action;
}
set
{
if ((this._action != value))
{
this.OnActionChanging(value);
this.RaiseDataMemberChanging("Action");
this.ValidateProperty("Action", value);
this._action = value;
this.RaiseDataMemberChanged("Action");
this.OnActionChanged();
}
}
}
/// <summary>
/// Gets or sets the 'ChildId' value.
/// </summary>
[DataMember()]
[Key()]
[RoundtripOriginal()]
public int ChildId
{
get
{
return this._childId;
}
set
{
if ((this._childId != value))
{
this.OnChildIdChanging(value);
this.RaiseDataMemberChanging("ChildId");
this.ValidateProperty("ChildId", value);
this._childId = value;
this.RaiseDataMemberChanged("ChildId");
this.OnChildIdChanged();
}
}
}
/// <summary>
/// Gets or sets the 'Name' value.
/// </summary>
[DataMember()]
public string Name
{
get
{
return this._name;
}
set
{
if ((this._name != value))
{
this.OnNameChanging(value);
this.RaiseDataMemberChanging("Name");
this.ValidateProperty("Name", value);
this._name = value;
this.RaiseDataMemberChanged("Name");
this.OnNameChanged();
}
}
}
/// <summary>
/// Gets or sets the associated <see cref="Parent"/> entity.
/// </summary>
[Association("ParentChild", "ChildId", "ParentId", IsForeignKey=true)]
public Parent Parent
{
get
{
if ((this._parent == null))
{
this._parent = new EntityRef<Parent>(this, "Parent", this.FilterParent);
}
return this._parent.Entity;
}
set
{
Parent previous = this.Parent;
if ((previous != value))
{
this.ValidateProperty("Parent", value);
if ((previous != null))
{
this._parent.Entity = null;
previous.Children.Remove(this);
}
if ((value != null))
{
this.ChildId = value.ParentId;
}
else
{
this.ChildId = default(int);
}
this._parent.Entity = value;
if ((value != null))
{
value.Children.Add(this);
}
this.RaisePropertyChanged("Parent");
}
}
}
private bool FilterParent(Parent entity)
{
return (entity.ParentId == this.ChildId);
}
/// <summary>
/// Computes a value from the key fields that uniquely identifies this entity instance.
/// </summary>
/// <returns>An object instance that uniquely identifies this entity instance.</returns>
public override object GetIdentity()
{
return this._childId;
}
}
/// <summary>
/// The 'Parent' entity class.
/// </summary>
[DataContract(Namespace="http://schemas.datacontract.org/2004/07/WordsBuilder.DomainModel")]
public sealed partial class Parent : Entity
{
private EntityCollection<Child> _children;
private string _name;
private int _parentId;
#region Extensibility Method Definitions
/// <summary>
/// This method is invoked from the constructor once initialization is complete and
/// can be used for further object setup.
/// </summary>
partial void OnCreated();
partial void OnNameChanging(string value);
partial void OnNameChanged();
partial void OnParentIdChanging(int value);
partial void OnParentIdChanged();
#endregion
/// <summary>
/// Initializes a new instance of the <see cref="Parent"/> class.
/// </summary>
public Parent()
{
this.OnCreated();
}
/// <summary>
/// Gets the collection of associated <see cref="Child"/> entity instances.
/// </summary>
[Association("ParentChild", "ParentId", "ChildId")]
public EntityCollection<Child> Children
{
get
{
if ((this._children == null))
{
this._children = new EntityCollection<Child>(this, "Children", this.FilterChildren, this.AttachChildren, this.DetachChildren);
}
return this._children;
}
}
/// <summary>
/// Gets or sets the 'Name' value.
/// </summary>
[DataMember()]
public string Name
{
get
{
return this._name;
}
set
{
if ((this._name != value))
{
this.OnNameChanging(value);
this.RaiseDataMemberChanging("Name");
this.ValidateProperty("Name", value);
this._name = value;
this.RaiseDataMemberChanged("Name");
this.OnNameChanged();
}
}
}
/// <summary>
/// Gets or sets the 'ParentId' value.
/// </summary>
[DataMember()]
[Editable(false, AllowInitialValue=true)]
[Key()]
[RoundtripOriginal()]
public int ParentId
{
get
{
return this._parentId;
}
set
{
if ((this._parentId != value))
{
this.OnParentIdChanging(value);
this.ValidateProperty("ParentId", value);
this._parentId = value;
this.RaisePropertyChanged("ParentId");
this.OnParentIdChanged();
}
}
}
private void AttachChildren(Child entity)
{
entity.Parent = this;
}
private void DetachChildren(Child entity)
{
entity.Parent = null;
}
private bool FilterChildren(Child entity)
{
return (entity.ChildId == this.ParentId);
}
/// <summary>
/// Computes a value from the key fields that uniquely identifies this entity instance.
/// </summary>
/// <returns>An object instance that uniquely identifies this entity instance.</returns>
public override object GetIdentity()
{
return this._parentId;
}
}