从客户端访问中的DomainService自定义对象 [英] Accessing custom objects in DomainService from client

问题描述

我使用的域名服务，以从Silverlight客户端数据库获取数据。

I am using Domain Service to fetch data from database from Silverlight Client.

在DomainService1.cs，我已经添加了以下内容：

In DomainService1.cs, I have added the following:

[EnableClientAccess()]
public class Product
{
    public int productID;
    public string productName;        
    public List<Part> Parts = new List<Part>(); //Part is already present in Model designer
}

在DomainService1 I类增加了新的方法，以检索自定义类对象的集合：

In DomainService1 class I added a new method to retrive a collection of the custom class object:

[EnableClientAccess()]
 public class DomainService1 : LinqToEntitiesDomainService<HELPERDBNEWEntities1>
 {
     ...
        public List<Product> GetProductsList(...)
        {
            List<Product> resultProducts = new List<Product>();
            ...
            return resultProducts;
        }
 }

从Silverlight客户端我试图访问方法：

From the silverlight client I am trying to access that method:

DomainService1 ds1 = new DomainService1();
var allproductList = ds1.GetProductsList(...);
ds1.Load<SLProduct>(allproductList).Completed += new EventHandler(Load_Completed); //Not correct usage

但它不是调用新方法的正确方法。我在DomainServices.cs加入了一类新产品的原因是为了有一种有效的分组。使用由实体框架自动生成的模型类我不能达到同样的

However it is not the correct way to call the new method. The reason I added a new class Product in DomainServices.cs is to have an efficient grouping. I cannot achieve the same using the model classes auto-generated by the entity framework.

如何叫我所说的新方法，从客户端？

How call I call the new method from the client?

推荐答案

虽然我不知道你的意思是这不是调用新方法的正确途径，或者如果您收到任何错误，我想，也许有些张贴工作code可能有帮助。

While I don't know what you mean by "it is not the correct way to call the new method", or if you're getting any errors, I thought maybe posting some working code might help.

我的POCO

    public class GraphPointWithMeta
{
    [Key]
    public Guid PK { get; set; }
    public string SeriesName { get; set; } 
    public string EntityName { get; set; }
    public double Amount { get; set; }

    public GraphPointWithMeta(string seriesName, string entityName, double amount)
    {
        PK = Guid.NewGuid();
        SeriesName = seriesName;
        EntityName = entityName;
        Amount = amount;
    }

    // Default ctor required.
    public GraphPointWithMeta()
    {
        PK = Guid.NewGuid();
    }
}

在域名服务的方法（EnableClientAccess装饰类）

A method in the domain service (EnableClientAccess decorates the class)

        public IEnumerable<GraphPointWithMeta> CallingActivityByCommercial()
    {
        List<GraphPointWithMeta> gps = new List<GraphPointWithMeta>();
        // ...
        return gps;
    }

从Silverlight客户端调用像

Called from the Silverlight client like

ctx1.Load(ctx1.CallingActivityByCommercialQuery(), CallingActivityCompleted, null);

客户端回调方法

        private void CallingActivityCompleted(LoadOperation<GraphPointWithMeta> lo)
    {
        // lo.Entities is an IEnumerable<GraphPointWithMeta>            
    }

这篇关于从客户端访问中的DomainService自定义对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！