Over ridding Methods in User control - asp.net

Question

Hi i have a user control that contains a button. I want to Over ride a custom function on click of that button like
Protected Sub btnUploadSpreadSheet_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUploadSpreadSheet.Click
MyMethod()
End Sub
Public Overridable Sub MyMethod()
' this i want to over ride
End Sub
and in my page where i have added my control when i tried to over ride
Protected Overrides Sub MyMethod ()
End Sub
It is not finding that sub in the base class.

Answer 1

That's because the page is not a child of your UserControl(your page does not inherit from it) and this is the wrong approach anyway. Look up "Inheritance in Visual Basic": http://msdn.microsoft.com/en-us/library/5x4yd9d5%28v=vs.90%29.aspx
What you apparently want is to handle a custom UserControl's event in your page:
Your UserControl:
Class ExcelSheetUploader
Inherits UserControl
Public Event Uploaded(ctrl As ExcelSheetUploader)
Protected Sub btnUploadSpreadSheet_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUploadSpreadSheet.Click
RaiseEvent Uploaded(Me)
End Sub
End Class
Now you can handle it in your page:
Protected Sub ExcelSheetUploader_Uploaded(ctrl As ExcelSheetUploader) Handles ExcelSheetUploader1.Uploaded
' Do something .... '
End Sub
MSDN: RaiseEvent

Answer 2

You cannot do this because your page is not extending the user control. Only in such a situation your implementation would be suitable

Answer 3

You can not directly override the methods or properties if some class
(e.g. Page) does not inherit You custom Class(Control). If you want to
do some functionality on some event on the page or button click then
create the public methods on the UserControl that raise some event or
execute some code.
Note - Must follow the page - life cycle.
Check this little code snippet that may be helpful to understand.
Private Class MyControl
Inherits NavronChartControl.UserControls.MyControlBase
Protected Overrides Sub OnChartTypeChanged(chartType As UserControls.ChartType)
MyBase.OnChartTypeChanged(chartType)
End Sub
///Call this OnChartTypeChanged(...) using some method
/// Or Create your public methods for your functionality
End Class
///Method at Parent Control
'OnChartTypeChanged is method that raise the event with argument
Protected Overridable Sub OnChartTypeChanged(chartType As ChartType)
'ChartTypeChang is an Event
RaiseEvent ChartTypeChanged(chartType)
End Sub
Check the Programming ASP.NET- Custom and User Controls 's Handling events in VB.NET section.
MSDN - Raising an Event - you can create your own custom event argument that hold some data that you want to pass through event. e.g. e.X