Web Service method name is not valid

user_960450 0
Viewed 29491

I get the following error "Web Service method name is not valid" when i try to call webmethod from javascript

System.InvalidOperationException: SaveBOAT Web Service method name is not valid. at System.Web.Services.Protocols.HttpServerProtocol.Initialize() at System.Web.Services.Protocols.ServerProtocol.SetContext(Type type, HttpContext context, HttpRequest request, HttpResponse response) at System.Web.Services.Protocols.ServerProtocolFactory.Create(Type type, HttpContext context, HttpRequest request, HttpResponse response, Boolean& abortProcessing)

HTML Code :

<asp:LinkButton runat="server" ID="lnkAddBoat" OnClientClick="javascript:AddMyBoat(); return false;"></asp:LinkButton>

JS Code :

function AddMyBoat() {
            var b = document.getElementById('HdnControlId').value;

            jQuery.ajax({
                type: "GET",
                url: "/AllService.asmx/SaveBOAT",
                data: { Pid: b },
                contentType: "application/text",
                dataType: "text",
                success: function(dd) {
                    alert('Success' + dd);
                },
                error: function(dd) {
                    alert('There is error' + dd.responseText);
                }
            });
}

C# Code (Web method in AllService.asmx file)

[WebMethod]
public static string SaveBOAT(int Pid)
{
    // My Code is here
    //I can put anythng here
    SessionManager.MemberID = Pid;
    return "";
}

I tried all solutions found on Stack Overflow and ASP.NET site.but none of them worked for me.

asp.net jquery javascript
9 Answers

In my case I had copied another asmx file, but not changed the class property to the name of the new class in the asmx file itself (Right click on asmx file -> View Markup)

user_745850

As Sundar Rajan states, check the parameters are also correct. My instance of this error was because I had failed to pass any parameters (as a body in a POST request) and the asmx web method was expecting a named parameter, because of this the binding logic failed to match up the request to the method name, even though the name itself is actually correct.

[WebMethod]
        public object MyWebMethod(object parameter)

If there is no parameter in the body of the request then you will get this error.

user_5096650

I had this issue because my soap method had a List<string> parameter. Couldn't figure out a way to make it work with the array parameter; so just converted the parameter to a &-delimited string (e.g. val1&val2&val3) and converted the parameter to an array in the service method.

user_2248510

In my case, one of the WebService receiving parameters was called aId. When I called it from javascript, I was sending the correct Id value, but the name of the sent variable was incorrectly called bId. So I just had to rename the WebService call, keep the correct value like before, and just change the variable name.

user_2661440
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