PageMethods没有在ASPX页面中定义

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问题描述

我看，我只能在同一时间假设工作过的一些旧的code。

I'm looking at some old code that I can only assume worked at one time.

MyPage.aspx：

function GetCompanyList(officeId) {
    var companyList = document.getElementById('<%= CompanyDropDown.ClientID %>');
    if (companyList.length == 0)
        PageMethods.GetCompanyList(officeId, OnGetCompanyList);
    else
        EditCompany();
}

和

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true" />

后面的 code：

[System.Web.Services.WebMethod()]
[System.Web.Script.Services.ScriptMethod()]
public IEnumerable<CompanyMinimum> GetCompanyList(int officeId) {
    return (
        from c in Repository.Query<Company>()
        where !c.IsDeleted && c.TypeEnumIndex == (short)CompanyRelationshipType.Hotel
        select new CompanyMinimum() {
            id = c.Id,
            desc = c.Description
        }
    ).ToList();
}

但在调用 PageMethods.GetCompanyList（）在第一个片段，铬报道：

But at the call to PageMethods.GetCompanyList() in the first snippet, Chrome reports:

PageMethods没有定义

有人能看到发生了什么变化，以prevent这从工作？

Can anyone see what has changed to prevent this from working?

注：我发现类似的问题，但他们似乎都与此相关的code不工作的母版页或用户控件，这不是这里的情况的

推荐答案

<$c$c>EnablePageMethods实际上只有一个页子类的方法进行交互是公开，静态，并归结为一个的WebMethod 。

EnablePageMethods actually only interacts with methods of a Page subclass that are public, static, and attributed as a WebMethod.

GetCompanyList 有2那些，只是也需要静态。

GetCompanyList has 2 of those and just also needs to be static.

[System.Web.Services.WebMethod()]
[System.Web.Script.Services.ScriptMethod()]
public static IEnumerable<CompanyMinimum> GetCompanyList(int officeId) {
    // ...
}

和，我怀疑这是怎么回事的是，它的离开 PageMethods 不确定的客户端，如果它没有找到有所有3的任何方法。

And, I suspect what's happening is that it's leaving PageMethods undefined client-side if it doesn't find any methods that have all 3.

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Pagemethods