How to find pictureBoxes in the form and add specific EventHandler to them

Question

I want to have a picture album that when I click any picture it goes to another form to edit that picture.

Now I have some pictureBoxes in the form with the names like PB0, PB1, PB2,...

and a method like this

private void msgShow(int id)
{
    MessageBox.Show(id.ToString());
}

when I add event handler to the two pictureBoxes like this

PB11.Click += new EventHandler((sender2, e2) => msgShow(3));
PB12.Click += new EventHandler((sender2, e2) => msgShow(4)); 

when I click PictureBox1 (PB1) messageBox shows

3

and when i click PictureBox2 (PB2) messageBox shows

4

it was true since I added 18 new pictureBoxes and used this code to do that

for (int i = 0; i <= 19; i++)
{
    ((PictureBox)Form2.ActiveForm.Controls.Find("PB" + i, true)[0]).Click += new EventHandler((sender2, e2) => msgShow(i));
}

now its wrong and when I click each pictureBox messageBox shows

20

but I want to show unique numbers for each PictureBox

Answer 1

Try this. Replace your for loop with this one

for (int i = 0; i <= 19; i++)
{
    var pictureBox = (PictureBox) Form2.ActiveForm.Controls.Find("PB" + i, true)[0];
    pictureBox.Tag = i;
    pictureBox.Click += (sender, args) =>
    {            
        msgShow((int)((sender as PictureBox).Tag));
    };
}

EDIT: According to new comments, send class object as

for (int i = 0; i <= 19; i++)
{
    var pictureBox = (PictureBox) Form2.ActiveForm.Controls.Find("PB" + i, true)[0];
    var productInfo = new ProductInfo
    {
        //This class is not mentioned into the question so I set example properties here eg.
       ImageName = "MyImage1.png",
       ImagePath = "C:\\Images\\"
       ...
    };
    pictureBox.Tag = productInfo;
    pictureBox.Click += (sender, args) =>
    {            
        msgShow((ProductInfo)((sender as PictureBox).Tag));
    };
}

And now your msgShow will takes ProductInfo object i-e

private void msgShow(ProductInfo pr)
{
    using(var fr = new FormProduct())
    {      
       fr.pInfo = pr;
       fr.showDialog();
    }
}