I'm trying to run an AJAX Webservice request on a VB ASP.NET page.
When the page loads, I'm trying to call the webservice but I get a 500 error in the console.
My WebService file looks like this:
<System.Web.Script.Services.ScriptService()>
<System.Web.Services.WebService(Namespace:="http://tempuri.org/")>
<System.Web.Services.WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)>
<ToolboxItem(False)>
Public Class usrDataSave
Inherits System.Web.Services.WebService
<WebMethod()>
Public Function saydata(abc As String)
MsgBox(abc)
Return abc
End Function
My ASP.NET page looks like this:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.2.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
$.ajax({
type: "POST",
url: "usrDataSave.asmx/saydata",
data: "hello_world",
contentType: "application/json",
datatype: "json",
success: function(responseFromServer) {
alert(responseFromServer.d)
}
});
});
</script>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
</div>
</form>
</body>
</html>
I expect the page to load and a message box to popup server side that says 'hello_world' as well as the web browser to create a popup that says the same. However, this does not happen as I get a 500 error instead.
I've tried to fix this by using different versions of jQuery as well as enabling requests in the web.config file like this:
<webServices>
<protocols>
<add name="HttpGet"/>
<add name="HttpPost"/>
</protocols>
</webServices>
This doesn't work and I still get that "the server responded with a status of 500" in the web browser console. No errors are logged within the application's debug console.
How can I fix this?