Question

I use System.Web.Services.WebMethodAttribute to make a public static method of an ASP.NET page callable from a client-side script:

test.aspx.cs

[System.Web.Services.WebMethod] public static string GetResult() {     return 'result'; } 

test.aspx

<asp:ScriptManager ID='sm' runat='server' EnablePageMethods='true' />  <script type='text/javascript'>     alert(PageMethods.GetResult()); </script> 

The method works as it should, but if I load test.aspx with

Server.Transfer('test.aspx'); 

I receive ‘Unknown web method’ error. After

Response.Redirect('test.aspx'); 

the page works well.

Could you tell me, please, what is a reason of the error and how can it also be avoided? Many thanks!

Answer 1

It seems calling set_path solves the problem:

<script type='text/javascript'>     PageMethods.set_path('test.aspx');     alert(PageMethods.GetResult()); </script>