How to get sender column and row number? - vb.net

Question

I have a TableLayoutPanel(tlp_printing_content_layer2) with 1 column and 2 row, each cell also contain 1 button, How can i get the column and cell number when button clicked? Because i want to replace the button with another usercontrol
Private Sub btn_printer_Click(sender As Object, e As EventArgs) Handles btn_printer2.Click, btn_printer3.Click, btn_printer4.Click, btn_printer5.Click
Dim currButton As Button = sender
Dim prtp As New ctrl_PrinterPanel
currButton.Dispose()
tlp_printing_content_layer2.Controls.Add(prtp, sender.column, sender.row)
End Sub
sender.column and sender.row is not work... or is that other way to replace the button with other usercontrol?

Answer 1

You can iterate through the columns and rows until you find a Button matching the name of your clicked button:
Private Sub PrintButton_Click(sender As Object, e As EventArgs) Handles PrintButtonOne.Click, PrintButtonTwo.Click
'find which row was clicked
Dim rowPos As Integer = whichRow(sender, e)
'did we get a valid result?
If rowPos > -1 Then
'this is a dummy red control so that we can see it working
Dim myNewControl As Panel = New Panel With {.BackColor = Color.Red}
'remove the old
TableLayoutPanel1.Controls.Remove(DirectCast(sender, Button))
'add the new
TableLayoutPanel1.Controls.Add(myNewControl, 0, rowPos)
End If
End Sub
Private Function whichRow(sender As Object, e As EventArgs) As Integer
'cast the button that was clicked
Dim clickButton As Button = DirectCast(sender, Button)
'look through all the cols and rows
For colNum As Integer = 0 To TableLayoutPanel1.ColumnCount
For rowNum As Integer = 0 To TableLayoutPanel1.RowCount
'try cast the control we find at position colnum:rownum
Dim testcontrol As Button = TryCast(TableLayoutPanel1.GetControlFromPosition(colNum, rowNum), Button)
If Not testcontrol Is Nothing Then
'is this testcontrol the same as the click control?
If clickButton.Name = testcontrol.Name Then
Return rowNum
End If
End If
Next
Next
'not found or some other issue
Return -1
End Function