How to save the last element of a dynamic combobox in c #?

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How to save the last element of a dynamic combobox in c #?

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#1 by (2 votes)

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Hi, I'm doing a program in which I save all my elements in a combobox since no sé muy bien hacerlo con listas o diccionarios .

The thing is that the combobox will be adding elements and increasing in size. The problem is that I need to select the last element every time a certain event occurs.

Well I add the elements in the following way and at the same time I quote that the combobox will increase in size as the program is working:

private void EntityLoad(DataInterceptedEventArgs obj){
    var entities = HEntity.Parse(obj.Packet);
    foreach(var entity in entities){
        Index = entity.Index;
        Id = entity.Id;
        Profile = entity.FigureId;
        playerList.Items.Add(entity.Index + "," + entity.Id + "," + entity.FigureId);
        //MessageBox.Show("figure id: "+ entity.FigureId +"el id del buny" + entity.Id + "buny index:" + entity.Index+ ", position: "+ entity.Tile.X + "," + entity.Tile.Y + "," + entity.Tile.Z);

    }
}

What I want to happen every time which for this is not necessary for you to help me as I know how to do it. What I want is that every time that event happens, the last element of my combobox. So my question is:

If I have un combobox que cambia de tamaño I can sacar el ultimo elemento each time my event is launched.

Second it is more advisable to use un diccionario o lista para guardar mis elementos .

El combobox será dinamico but I will tell you the moment only that I will need to know how to get the last element sabiendo que variará de tamaño .

Here is a capture of the combobox that will increase as my program runs:

Correction: My goal is to take the last element of my combobox, save it and if possible make a split as a practical example that would help me a lot

Example.

Combobox:

"hola,dos,tres"
"1,dos,tres"
"2,dos,tres"

I'll get:

Obtener el ultimo elemento.
lo guardaré.
y haré un split para guardar los elementos por separado: 
int i=2
string dos =  "dos"
string tres =  "tr"

c#

asked by jeronimo urtado 05.04.2017 в 19:38

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1 answer

Add Event Click to a Button Asp.Net Prepared statements: consequences of the absence of free_result () or close ()

score 2 · Accepted Answer

Regardless of whether it is dynamic or not:

var ultimo = combobox.items.count - 1;

To select it

combobox.selectedindex = ultimo;

combobox.items.count < - always bring the number of elements, -1 to get the last index.

And every time you re dimensions your combo you would have to take that value that will be changing.

To take the value

Selecting it and taking the selected

 var ultimo = combobox.items.count - 1;
 combobox.selectedindex = ultimo;  //<-- con esto lo dejas seleccionado
 var valor = comboBox1.SelectedValue;

Direct with the index

 var ultimo = combobox.items.count - 1;
 var valor = combobox.items[ultimo].Value;  //No estoy segura de la sintaxis

Once you have the value:

var datos = valor.Split(',');
if(datos.length > 2){
   int i=datos[0];
   string dos =  datos[1];
   string tres =  datos[2];
}

Something like that, I hope my examples can help you, Greetings ... and it's not a nuisance by the way.