Question

Anyone know why I’m getting this error message?

The error message:

{"Message":"Invalid JSON primitive: tab_group_48.","StackTrace":" at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializePrimitiveObject()\r\n at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)\r\n at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeDictionary(Int32 depth)\r\n at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)\r\n at System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer)\r\n at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)\r\n at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize[T](String input)\r\n at System.Web.Script.Services.RestHandler.GetRawParamsFromPostRequest(HttpContext context, JavaScriptSerializer serializer)\r\n at System.Web.Script.Services.RestHandler.GetRawParams(WebServiceMethodData methodData, HttpContext context)\r\n at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.ArgumentException"}

The jQuery:

The relievant jQuery looks like this:

$.ajax({
    type: 'POST',
    url: '/webservices/minimised.asmx/UpdateState',
    data: '{ strTabID:' + tab + ', strWidgetID:' + widget[1] + ', intState:' + state + ' }',

Data posted to server

Where in this example:

Data becomes = { strTabID:tab_group_48, strWidgetID:portlet_4, intState:0 }

The C#:

And the relievant webservice section c# looks like this:

[WebMethod()]
public int UpdateState(string strTabID, string strWidgetID, int intState)
{
    intTabID = Convert.ToInt32(strTabID.Replace("tab_group_", ""));
    strQuery = "update columns set unminimised = @state where tabs_id = @tab and widgets_id = @widget";

    intWidgetID = Convert.ToInt32(strTabID.Replace("portlet_", string.Empty));

    using (connection = new SqlConnection(ConfigurationManager.AppSettings["connString"]))
    {
        using (command = new SqlCommand(strQuery, connection))
        {
            command.Parameters.Add("@tab", SqlDbType.Int, 4).Value = intTabID;
            command.Parameters.Add("@widget", SqlDbType.Int, 4).Value = intWidgetID;
            command.Parameters.Add("@state", SqlDbType.Int, 4).Value = intState;

            connection.Open();
            intAffectedRows = command.ExecuteNonQuery();
            connection.Close();
        }
    }

    return intAffectedRows;
}

Answer 1

Your JSON data format is invalid, you need to wrap the values with single quotes e.g.

"{ strTabID: '" + tab + "', strWidgetID: '" + widget[1] + "', intState: '" + state + "' }";