Passing data to WebMethod() using jQuery

Question

I am calling a WebMethod() using $.ajax() and it doesn't seem like the VB is handling the data correctly.

Here is my JS:

$.ajax({
    type: "POST",
    url: "Default.aspx/RemoveUser",
    data: "{'s':'test'}",
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function (msg) {
        alert(msg.d);
    },
    error: function (jqXHR, textStatus, errorThrown) {
        alert(textStatus + "\n" + errorThrown);
    }
});

And I created two RemoveUser functions, below:

<WebMethod()> _
Public Shared Function RemoveUser(ByVal s As String) As String
    Return s
End Function

and

<WebMethod()> _
Public Shared Function RemoveUser() As Boolean
    Return True
End Function

However, when I execute the above JS I get "true" returned. It is passing the data correctly:

POST data

Commenting out the RemoveUser(ByVal s As String) function does not change behavior at all.

I've been doing some googling...just wondering: Are you sure it's supposed to be "{'s':'test'}" ? It looks like it might need to be '{"s":"test"}' — sacredfaith
– sacredfaith, Commented Dec 12, 2012 at 18:38
@sacredfaith: No change when swapping the quotes; good idea, though. — Phillip Copley
– Phillip Copley, Commented Dec 12, 2012 at 20:08

Community · Accepted Answer · 2017-05-23 11:55:58Z

1

I think you are using overloading methods here:

Check this out: .NET Overload WebMethods - Possible?

edited May 23, 2017 at 11:55

CommunityBot

11 silver badge

answered Dec 13, 2012 at 0:58

Kailash Janakiraman

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Comments

Naftali · Accepted Answer · 2012-12-12 20:11:39Z

0

Get rid of the quotes, the data element can be an object. Currently you were passing nothing...
Try this:

data: {"s":"test"},

answered Dec 12, 2012 at 20:11

Naftali

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