如何动态创建带有面板的数据网格？

Question

I'm french, so sorry for my bad english... But I hope that you will help me ;)

I'm developing a soft in c# with lot of information store in DB, like information about people.

I want display these information with a beautiful UI, like that :

For that, I created :

• a first panel in Visual
• a class for create sub panel dynamically

I make a loop and for each person, I call a method "createPanel" with the information of each person, and these sub panels created are added to the parent panel. The ID of each person is store in the "tag" parameter of the sub panel.

All work fine, but I don't really know how to add event in each sub panel. As you can see in the link above, the user can click on a bookmark, or a icon for show a menu (the round with 3 point = icon "menu").

My question is how to add event for each sub panel dynamically ? For example I want display a menu for each sub panel when I click on the icon "menu", get the id store in the "tag" of the sub panel, and show a new form for manage information.

Thx for your help, I can add my code if necessary :)

Answer 1

Make a own user control for the panels you want to display containing all the controls from the toolbox you need.

public partial class MyControl : UserControl
{
  ...
}

In "MyControl" you define events for all things that can happen and must be handled externally of the control. Same as eg "SelectedIndexChanged" for combobox.

Your control class would then look like this:

public partial class MyControl : UserControl
{
   public event EventHandler<MyImportantEventA> OnImportantThingHappend;

   //Event-Invoker
   protected virtual void OnOnImportantThingHappend(MyImportantEventA e)
        {
            OnImportantThingHappend?.Invoke(this, e);
        }
}

//Data of your event. Customize as you like/need.
public class MyImportantEventA : EventArgs   
 {
            public string Message { get; set; }
 }

When you add your control dynamically, bind to the event(s) of your control:

myUserControl.OnImportantThingHappend += DoSomethingWithEvent;

Things the control can handle it self, don't need to be exposed as events. Eg:

"Close" may be something that must be handled externally. You need to remove the control, rearange you controls etc.

"Show Details" probably is something that can be handled completely inside of your control. Your control shows a message box or a fancy tooltip.