Subroutine 'sender' queries vb.net

[Alcestis]

I understand that if i call a subroutine from a control the subroutine refers to the control that called it using sender. What i don't understand however is how exactly to implement this...

Say for instance i have the code below, which creates a dynamic textbox or a dynamic picturebox with the handler of check_click.

Public Sub doall_click(ByVal sender As Object, ByVal e As EventArgs)
 
If Tool = "Text" Then
     'define varibles
            intelement = intelement + 1
            CursorOffset = Windows.Forms.Cursor.Position
            intheight = (Me.Height - dynpan(1).Height) / 2
            intwidth = (Me.Width - dynpan(1).Width) / 2
            sintxtsize = txtsize.Text

            'make space
            ReDim Preserve dynlabel(intelement)

            'create new label and define propeties
            Me.Controls.Add(dynlabel(intelement))
            dynlabel(intelement) = New TextBox
            dynlabel(intelement).Location = New Point((CursorOffset.X), (CursorOffset.Y))
            dynlabel(intelement).BorderStyle = BorderStyle.None
            dynlabel(intelement).BackColor = Pan2color.BackColor
            dynlabel(intelement).ForeColor = Pan1color.BackColor
            dynlabel(intelement).Parent = dynpan(intlayeron)
            dynlabel(intelement).Text = "TYPE HERE"
            dynlabel(intelement).Tag = intelement

            'add events
            AddHandler dynlabel(intelement).Click, AddressOf check_click


  If Tool = "Image" Then

            'define varibles
            intelement = intelement + 1
            CursorOffset = Windows.Forms.Cursor.Position

            'make space
            ReDim Preserve dynimage(intelement)

            'create new label and define propeties
            Me.Controls.Add(dynimage(intelement))
            dynimage(intelement) = New PictureBox
            dynimage(intelement).Location = New Point((CursorOffset.X - intwidth), (CursorOffset.Y - intheight))

            'add events
            AddHandler dynimage(intelement).Click, AddressOf check_click

        End If
end sub

and in check click i need to be be to gather information on the sender in order to resize and manipulate it, how would i go about it?

Below is what i have in check_click...( not much)

 
Public Sub check_click(ByVal sender As Object, ByVal e As EventArgs)


        'Sender?
        
        If Tool = "Hand" Then
            ' ADD STUFF HERE YOU DIG ABOUT RESIZING AND MOVING
        End If

 end sub

[Munawar]

Hi,
Here sender means the source of object (control from where event is called) .. its handy to get details of the caller ... like if the event is fired from dropdownlist .. then the sender is Dropdownlist .. you can get detailes about the caller on run time from Sender..
e holds information about the event data.. like in case of Datagrid it provide information about the curent row you are going to edit or other operation.
here is detailed example ..

http://www.odetocode.com/articles/231.aspx

epecially check this code segment

protected void DropDown_SelectedIndexChanged(object sender, EventArgs e)
{
   DropDownList list = (DropDownList)sender;

   TableCell cell = list.Parent as TableCell;
   DataGridItem item = cell.Parent as DataGridItem;

   int index = item.ItemIndex;
   string content = item.Cells[0].Text;

   Response.Write(
         String.Format("Row {0} contains {1}", index, content)
      );
   
}

Thanks,
Munawar

[Alcestis]

Thank you Munawar. I'm looking at it now and it seems very helpful.