Question

在我的经验中,我称之为简单的网络方法。

[WebMethod]
public List<string> GetUserListByLetters(string strLetters){ ... }

这里是我关于Complete JS-Function:

function OnComplete(args) {
    ...
    if (args != "") {
        for (var i = 0; i < args.length; i++) {
            // Do what I need with string in args[i]
        }
    }
    ...
}

我现在想有这样的方法:

[WebMethod]
public string GetUserListByCountry(int countryId, out List<User> users)
{ 
    users=null;
    if ( Validate(countryId)==false )
        return "wrong country Id";
    users = GetUsers(countryId); // returns list of User objects.
    return "";
}

Question1: should "out" parameter work in WS? I saw few article (, for example) where said it is impossible. Question2: if it doesn t work, how should I change method signature to get that workable? Question3: if it works, how could I access data from out parameter?

感谢。

Answer 1

我将采用这种办法:

[WebMethod]
public object GetUserListByCountry(int countryId)
{ 
    users=null;
    if ( Validate(countryId)==false )
        return "wrong country Id";
    users = GetUsers(countryId); // returns list of User objects.
    return new {Error="", Users=users};
}

我指的是,我将归还复杂的物体,其一宗财产将包含返回的通常价值,另一宗——所需数据。

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