asp.net - Unable to call webmethod in autocomplete textbox -

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aspx page code:

<ajax:scriptmanager id="scriptmanager1"  runat="server">  <services >   <ajax:servicereference path="myservice.asmx" />  </services> </ajax:scriptmanager>   <asp:textbox id="txtmaterialno"                width="100%" runat="server" ></asp:textbox>          <cc1:autocompleteextender id="autocompleteextender1" runat="server" completioninterval="20"         minimumprefixlength="1" servicemethod="getmaterialid"          servicepath="myservice.asmx" targetcontrolid="txtmaterialno"> </cc1:autocompleteextender>

myservice.asmx

    [scriptservice] [webservice(namespace = "http://tempuri.org/")] [webservicebinding(conformsto = wsiprofiles.basicprofile1_1)] public class myservice : system.web.services.webservice  public myservice()     {          //uncomment following line if using designed components          //initializecomponent();      }      [system.web.services.webmethod]     public string[] getmaterialid(string prefixmaterial)     { ...... code .... return     }   }

but when typing textbox no suggestion coming, when placing breakpoint @ getmaterialid can see not coming function calling myservice on textchange.

how fix this? why calling constructor not webmethod?

you need add scriptmethodattribute so:

    [webmethod]     [scriptmethod]     public string[] getmaterialid(string prefixmaterial)     {         ...... code         .... return     }

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