单击按钮时的增量计数C＃Visual Studio 2013

Question

So, i am trying to increment a count every time i click a button. And as for the count, i want to save it into an arraylist, after that, i want to retrieve the database by using the last row of arraylist as the ID

public partial class Queue : System.Web.UI.Page
{
    ArrayList array = new ArrayList();
    int count = 0;

    protected void Page_Load(object sender, EventArgs e)
    {
        LblDate.Text = DateTime.Today.ToString("dd-MM-yyyy");
        array.Add(count);
    }

    protected void Timer1_Tick(object sender, EventArgs e)
    {
        LblTime.Text = DateTime.Now.ToString("HH:mm:ss");
    }

    protected void Button1_Click(object sender, EventArgs e)
    {  
        count++;
        array.Add(count);
        int last = Convert.ToInt32(array[array.Count - 1]);

        queue fmCustomer = new queue();
        fmCustomer = fmCustomer.getQueueNoByID(last.ToString());

        Label1.Text = last.ToString();
    }
}

These are my codes, the problem i am facing now is i can only increment once for the count.

When i click the button, it display 1, but after that it wont increase again

So i would need some help with that.

Answer 1

I see a few issues with the code..

1. Why is count set to 1 and not 0?
2. What is the purpose of button1WasClicked
3. What do you plan to do with this array list - even if your code was working it would just be a list of 0,1,2 ... N where N = number of clicks

Answer 2

Button1_Click event will be fired when you click the button. You don't need to check button1WasClicked == true

Answer 3

You are using a Page class. This class will be destroyed after your request response. If will be recreated for the next request.

Therefore button1WasClicked will always be false, and array will always be initialized (and therefore empty).

The Page_Load event will always fire on every request. This will cause your array to always get the value 1.

You need to step back and take some time to understand the page lifecycle for aspx. Also you can set brakepoints and inspect what your code is doing.