How to pass JSON object using Ajax with ASP.NET WebMethod

Question

I have a problem with passing a JSON object using Ajax and ASP.NET WebMethods

function setStudentInfo() {
    var jsonObjects = [
        { id: 1, name: "mike" },
        { id: 2, name: "kile" },
        { id: 3, name: "brian" },
        { id: 1, name: "tom" }
    ];

    $.ajax({
        type: "POST",
        url: "ConfigureManager.aspx/SetStudentInfo",
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        async: false,
        data: { students: JSON.stringify(jsonObjects) },
        success: function (result) {
            alert('success');
        },
        error: function (result) {
            alert(result.responseText);
        }

    });
}

ASP.NET code

[WebMethod]
public static void SetStudentInfo(object students)
{
     //Here I want to iterate the 4 objects and to print their name and id
}

I am getting the following error:

"{"Message":"Invalid JSON primitive: students.","StackTrace":" at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializePrimitiveObject() at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth) at System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer) at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit) at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize[T](String input) at System.Web.Script.Services.RestHandler.GetRawParamsFromPostRequest(HttpContext context, JavaScriptSerializer serializer) at System.Web.Script.Services.RestHandler.GetRawParams(WebServiceMethodData methodData, HttpContext context) at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.ArgumentException"}"

Answer 1

I know its an old question but if someone gets here for an answer here's the solution;

var jsonObjects=[
    { id: 1, name: "mike" },
    { id: 2, name: "kile" },
    { id: 3, name: "brian" },
    { id: 1, name: "tom" }
];

$.ajax({
    type: "POST",
    url: "ConfigureManager.aspx/SetStudentInfo",
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    async: false,
    data: JSON.stringify({ students: jsonObjects }),
    success: function (result) {
        alert('success');
    },
    error: function (result) {
        alert(result.responseText);
    }

});

Answer 2

Pass your entire JSON as a string, like this:

data: '{variable: "value"}'

I always get an error if I try to pass it as you have.