如何添加到 button_click 的事件参数

Question

I have a button_click(object sender, EventArgs s) and a class Purchase:EventArgs plus a dynamically created button. I want to button to click, then send 'Purchase' instead of event args. ie, I want to edit event args to the button as it clicks. such that I'll use that information instead, as it is a dynamically created button. how do I do that? I have several ideas such as creating a master class for the button, but I want answers.

I know it's a difficult question. but what use are event args if they are inaccessible?

var button = new Button();
button.Text = "change";
button.Click += button_Click;

table.Controls.Add(new Button() { Text = "change" }, 0, table.RowCount - 1);
            table.Controls.Add(new TextBox() { Text = pr.value.ToString() }, 0, table.RowCount - 1);
            table.Controls.Add(new DateTimePicker() { Text = pr.time.ToString() }, 0, table.RowCount - 1);
            table.Controls.Add(new TextBox() { Text = "transaction" }, 0, table.RowCount - 1);

            table.RowCount++;

I want something

like button.Click+=button_click(pr) 

when

/*when pr:*/ Purchase pr = new Purchase()//...;

Answer 1

Set the click handler for each button to the same

Set the Tag attribute for the button to the object you want to handle in the click

 Button MakeButton(string text, object tag){
       var b = new Button{
         Text = text,
         Tage = tag
      };
       b.Click += button_Click;
      return b;
  }
     
 

 table.Controls.Add(MakeButton("change", new Froodle()), 0, table.RowCount - 1);
 table.Controls.Add(MakeButton(pr.value.ToString(), new Froodle()), 0, table.RowCount - 1);

etc

Now in the click handler pick up the object from the tag

 void button_Click(object sender, Eventargs e){
     var target = sender.Tag;
 }