creating html buttons in c from an arraylist

So, this screams as being homework… Regardless you need to set up a counter when you go through your Product List. Showing all of your code will likely help with questions in the future.

    List<string> ProductList = new List<string>();
    int i;

I assume that your list and variables are not being shown. And having the code in the page load helps too.

       protected void Page_Load(object sender, EventArgs e)
    {
        ProductList.Add("Milk");
        ProductList.Add("Food");
        ProductList.Add("Cooked");
        ProductList.Add("Beef");

        foreach (string product in ProductList)
        {
            Button button = new Button();
            button.ID = this.ProductList[i].ToString();
            button.Text = this.ProductList[i].ToString();
            //button.Attributes["src"] = "trash.png";
            place.Controls.Add(button);
            i++;
        }

    }