eezzekl's questions

I have an array of objects that fills randomly

var lproducts = [
{
 "nombre":"Agua",
 "descripcion":"Agua purificada",
 "precio": 10.5
 },
{
"nombre":"leche",
 "descripcion":"leche entera",
 "precio": 20
 },
{
"nombre":"Manzana",
 "descripcion":"Manzana Roja",
 "precio": 5
 },
{
"nombre":"Galletas",
 "descripcion":"Galletas Chocolate",
 "precio": 10
 }
] 

I don't know when an object is added to the array, so I don't know its index, and I want to remove the object whose name property is "Apple". I know that with lproducts.splice(2, 1)I can remove an object from the array, where the number 2 is the index of the item I want to remove.

What I need to know is the index of the object named apple so I can remove it.

I have a table similar to this CancelLog

|ID| membrecia| User    | DateCancel  | Motivo |
| 2| 1        | uS1     | 7/29/2011   |  ...   |
| 3| 1        | uS2     | 7/30/2011   |   ...  |
| 6| 1        | uS1     | 8/02/2011   |   ...  |
| 1| 2        | uS1     | 7/28/2011   |   ...  |
| 4| 2        | uS2     | 7/30/2011   |  ....  |
| 5| 2        | uS3     | 8/01/2011   |    .   |
| 6| 3        | uS1     | 8/02/2011   |    .   |

and I would like to get The most recent record of each membership is to say something like this

|ID| membrecia| User    | DateCancel  | Motivo |
| 6| 1        | uS1     | 8/02/2011   |   ...  |
| 5| 2        | uS3     | 8/01/2011   |    .   |
| 6| 3        | uS1     | 8/02/2011   |    .   |

I was doing something similar to this,

select l.membrecia, l.[USER] , l.DateCancel, count(*), max(l.DateCancel)
from CancelLog l
group by l.membrecia, l.[USER], l.DateCancel;

count(*) y max(l.DateCancel)I only use them for information, they will not be in the final query

if it gives me the most recent results, but if a membership is "cancelled"* by several different users, it brings me the data of all users who canceled it

 |ID| membrecia| User    | DateCancel  | Motivo |
 | 3| 1        | uS2     | 7/30/2011   |   ...  |
 | 6| 1        | uS1     | 8/02/2011   |   ...  |
 | 1| 2        | uS1     | 7/28/2011   |   ...  |
 | 4| 2        | uS2     | 7/30/2011   |  ....  |
 | 5| 2        | uS3     | 8/01/2011   |    .   |

I would like to get the records like the ones shown in table 2.

*During cancellation, the "Reason" can be changed, and due to this change a new record is created in the log.

change from motivo"Temporary removal" to "Definitive removal", so I am only interested in the last change regardless of the user, but I do need the last user who made the change in the results.

Does anyone know how I could get those logs?

_{Note: This is a translation of an English SO question.}

I am working on a VB.net project. I am new to VB.net LINQ and would like to know the Lambda equivalent of

var _new = orders.Select(x => x.items > 0);

In VB.net

original question here

I am doing a login .Net which before and after each process will fill a stringwith the message:

"proceso x realizado \n"
"proceso y saltado \n" //porque o se realiza x o y 
"proceso a fallo al sumar \n"
"proceso n [...] \n"

Each message is added to stringafter each process with all the messages it has.

As it appears in the title there are several ways to create one stringof this type.

To which my question is, which of the ways to create a stringis the one that consumes less resources or is more efficient.

It should be noted that the stringending will have at least 25 lines

I have a page made in HTML and JavaScript , in this I have a form with several inputsamong them is a input file, and I send them to the server through Ajax and JS .

On the server side I receive the data from the inputs, but when I receive the input fileI get an incorrect data type error.

My question is: What type of data do I have to use on the server side ( ASP.net and C# ) in order to receive the file correctly.

Here part of the code I have:

HTML

  <form id='frm1'>
     <input type='text' id='nombre'>
     <input type='file' id='balance'>
  </form>

javascript

fuction guardar(){
 var nombre = $('#nombre').val();
 var files = $("#balance").get(0).files;
 PageMethods.Guardar(nombre,files[0],guardar_Callback, Failed_CallBack,context);
}

On the server side I have the following method:

[WebMethod()]
public static int guardar(string nombre, tipoArchivo balance){
//lo que haga con la informacion
}

As I told you, with the exception of the data type to receive the file, everything works fine.

Good day. I am working with C# and ASP.Net on the server side and with JS and html on the client side.

I have a form similar to this

<form id='frmForm'>
<label>Subir Archivo</label>
<input type ='file' id='file' />
<button>Guardar</button>
</form>

What I want is to obtain the file through js and send it to my server through AJAX as one more parameter, since in reality I send several more fields.

If you could guide me on how to do this function, both on the client side and as what type of data I receive from the server side

Cheers