换成RIA Service july版后,提示错误Domain operation entry 'Update' must take exactly one parameter.

Question

编辑的时候提示这样的错误,也没有提示哪个文件.使用了linq to sql services
Domain operation entry 'Update' must take exactly one parameter. 

---

aaaa

Answer 1

新的API是这样的：

Previously

public void UpdateProduct(Product current, Product original)

{

  this.Context.Products.Attach(current, original);

}

New

public void UpdateProduct(Product currentProduct)
{
this.Context.Products.Attach(currentProduct, this.ChangeSet.GetOriginal(currentProduct));
}

检查你所有Server端的 Update 方法，更改相应的API.

Answer 2

我换成Attach(Product currentProduct)这样,就不会出错
奇怪了

---

aaaa

Answer 3

自定义的方法你可以加上InvokeAttribute试试，具体的问题请参看  http://msdn.microsoft.com/en-us/library/ee707373(VS.91).aspx

---

WPF