wcf 数据服务 [webGet] 方法返回 int - 如何读取 int？

发布于 2024-12-21 09:58:36 字数 701 浏览 0 评论 0原文

我有一个返回 int 的 WCF 数据服务 [WebGet] 方法。（产品表中没有产品）

我如何读取它的结果？我用浏览器检查了该方法的工作原理。

     public void ProductsCount()
    {
        ctx.BeginExecute<int>(new Uri(uriBase + "/GetNoProducts"), GetProductsCountCompleted, ctx);
    }
    public void GetProductsCountCompleted(IAsyncResult result)
    {
        inventory_db_bigEntities context=result.AsyncState as inventory_db_bigEntities;
        var x = context.EndExecute<int>(result);

       //how do i read the int out of the x variable        
    }

更新

也许 BeginExecute 和 EndExecute 不是正确的方法。

在浏览器窗口中，webget 方法返回：

“223863"

原文

I have a WCF data service [WebGet] method returning an int. (no of products in products table)

How can I read it's result?
The method works i checked with the browser.

     public void ProductsCount()
    {
        ctx.BeginExecute<int>(new Uri(uriBase + "/GetNoProducts"), GetProductsCountCompleted, ctx);
    }
    public void GetProductsCountCompleted(IAsyncResult result)
    {
        inventory_db_bigEntities context=result.AsyncState as inventory_db_bigEntities;
        var x = context.EndExecute<int>(result);

       //how do i read the int out of the x variable        
    }

UPDATE

Maybe BeginExecute and EndExecute is not the way to go for it.

In the browser window the webget method returns:

"<GetNoProducts p1:type="Edm.Int32">223863</GetNoProducts>"

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只涨不跌 2024-12-28 09:58:36

IAsyncResult 的 MSDN 页面使用BeginInvoke 而不是 BeginExecute，然后调用 EndInvoke 取回值：

// The asynchronous method puts the thread id here.
int threadId;

// Create an instance of the test class.
AsyncDemo ad = new AsyncDemo();

// Create the delegate.
AsyncMethodCaller caller = new AsyncMethodCaller(ad.TestMethod);

// Initiate the asychronous call.
IAsyncResult result = caller.BeginInvoke(3000, out threadId, null, null);

...

// Wait for the WaitHandle to become signaled.
result.AsyncWaitHandle.WaitOne();

// Perform additional processing here.
// Call EndInvoke to retrieve the results.
string returnValue = caller.EndInvoke(out threadId, result);

The MSDN page for IAsyncResult uses BeginInvoke rather than BeginExecute and then calls EndInvoke to get the value back:

// The asynchronous method puts the thread id here.
int threadId;

// Create an instance of the test class.
AsyncDemo ad = new AsyncDemo();

// Create the delegate.
AsyncMethodCaller caller = new AsyncMethodCaller(ad.TestMethod);

// Initiate the asychronous call.
IAsyncResult result = caller.BeginInvoke(3000, out threadId, null, null);

...

// Wait for the WaitHandle to become signaled.
result.AsyncWaitHandle.WaitOne();

// Perform additional processing here.
// Call EndInvoke to retrieve the results.
string returnValue = caller.EndInvoke(out threadId, result);

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