C# cloned MouseHover/MouseLeave applies to original control & not current

Question

I have a form that I add controls in a panel

one of them is a PictureBox holds a MouseHover/MouseLeave event like this

void PropAction_pBoxMouseLeave(object sender, EventArgs e)
{
    PropAction_pBox.ImageLocation = @"PicButtons\PropertiesBtn2.png";
}
void PropAction_pBoxMouseHover(object sender, EventArgs e)
{
    PropAction_pBox.ImageLocation = @"PicButtons\PropertiesBtn2White.png";
}

In the add button I have this code

create a new button based on the newPropAction (original) and add it in a list *

" newPropAction_pBox represents the new PictureBox & PropAction_pBox represents the original PictureBox "*

        PictureBox newPropAction_pBox = new PictureBox();
        newPropAction_pBox.Image = PropAction_pBox.Image;
        newPropAction_pBox.Click += PropAction_pBoxClick;
        newPropAction_pBox.MouseHover += PropAction_pBoxMouseHover;
        newPropAction_pBox.MouseLeave += PropAction_pBoxMouseLeave;
        this.Controls.Add(newPropAction_pBox);// add to controls
        ActionPictures.Add(newPropAction_pBox); //Add to btn to list

But the final effect is this (pictures below)

Mouse not on pictureBox yet : http://prnt.sc/axt8b9

Mouse on the new PictureBox : http://prnt.sc/axt9ul

Alexander Petrov · Accepted Answer · 2016-05-01T20:35:53.583

0

Change the code as follows

void PropAction_pBoxMouseLeave(object sender, EventArgs e)
{
    var pictureBox = (PictureBox)sender;
    pictureBox.ImageLocation = @"PicButtons\PropertiesBtn2.png";
}

void PropAction_pBoxMouseHover(object sender, EventArgs e)
{
    var pictureBox = (PictureBox)sender;
    pictureBox.ImageLocation = @"PicButtons\PropertiesBtn2White.png";
}

Object sender is source of the event. Parameter sender refers to the instance that raises the event.
Thus the event handler receives information, what kind of object is the source of this event.

edited May 01 '16 at 20:35

answered May 01 '16 at 12:19

Alexander Petrov

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WOW it worked but please explain to me at the name of the original `PictureBox is PropAction_pBox` how does the `var pictureBox.ImageLocation` works like `PropAction_pBox.ImageLocation` – ehem May 01 '16 at 19:21
@ehem - See update. So hard to write in English. So easy to write code. – Alexander Petrov May 01 '16 at 20:38
so the `(PictureBox)sender` returns to the `object sender` , in simple words . Anyway I understood how it works , have a nice day – ehem May 02 '16 at 07:56

C# cloned MouseHover/MouseLeave applies to original control & not current

1 Answers1