如何在 JavaScript 中调用 ASP.Net Web 服务
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How to call an ASP.Net Web Service in javascript
提问by Simon Kérouack
As the title states, I'm trying to call a web service written in ASP.Net (Same solution, but different project in visual studio) from javascript. Since I added the web reference for the service prior to this for calling it in VB.Net, I tried to use this reference by directly calling it.
正如标题所述，我试图从 javascript 调用用 ASP.Net 编写的 Web 服务（相同的解决方案，但 Visual Studio 中的项目不同）。由于我在此之前添加了该服务的 Web 引用以在 VB.Net 中调用它，因此我尝试通过直接调用来使用该引用。
In the body of the Default.aspx page, I have this code:
在 Default.aspx 页面的正文中，我有以下代码：
<asp:ScriptManager id="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/App_WebReferences/localhost/ServiceName.discomap" InlineScript="true" />
</Services>
</asp:ScriptManager>
but in javascript, I can't call my service at all. Could anyone explain me how? I'd want to do something like this:
但在 javascript 中，我根本无法调用我的服务。谁能解释我怎么做？我想做这样的事情：
<script type="text/javascript">
alert(ServiceName.HelloWorld())
</script>
采纳答案by Simon Kérouack
Finally found what I think is the right way to do it, it doesn't need jQuery at all, nor httprequest or any weird workaround. Here's the related code:
终于找到了我认为正确的方法，它根本不需要 jQuery，也不需要 httprequest 或任何奇怪的解决方法。这是相关的代码：
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="WebService.asmx/js" type="text/javascript"></script>
<script type="text/javascript">
function callback(msg) {
alert(msg);
};
function HelloWorld() {
WebService.HelloWorld(callback);
};
</script>
<title></title>
</head>
<body>
<div id="test" onclick="HelloWorld();">
click this
</div>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<asp:ServiceReference Path="~/WebService.asmx" />
</Services>
</asp:ScriptManager>
</form>
</body>
</html>
