Solved

RE: Having difficulty in getting FindControl to work in Page load Event......

Posted on 2011-02-18
3
334 Views
Last Modified: 2012-06-27
Hi,

I am having a problem in getting a "FindControl" method to work in my PageLoad event. I need to find the control that raise an event in the PageLoad event.

The FindControl is not finding anthing. I just get "Object reference not set to an instance of an object." Any ideas on what is wrong? BTW this PL event is operating within a User Control on a Page with also has a Master Page.

Please see the attached code. "cntControl" seems to stay at nothing although a value is in "ctrlname"

 ie "ctl00$MainPanelContent$ctl00$_lbtnDeleteRCe8a9bf61-f593-4be5-9085-bc74f382c52f"

Thanks in advance,

Sam
Dim ctrlname As String = Page.Request.Params.Get("__EVENTTARGET")
        Dim cntControl As Control = Nothing
        Dim strID As String = ""
        Dim lbtn As LinkButton = Nothing

        If Not (ctrlname Is Nothing) And (ctrlname <> String.Empty) Then
            cntControl = Me.Page.FindControl(ctrlname)
            lbtn = DirectCast(cntControl, LinkButton)
            If lbtn.CommandName = "AddRow" Then
                response.write("Add clicked")
            ElseIf lbtn.CommandName = "Delete" Then
                response.write("Delete clicked")
            Else
                response.write("Something Else triggered")
            End If

        Else
            response.write("No control was triggered")
        End If

Open in new window

0
Comment
Question by:SamJolly
  • 2
3 Comments
 
LVL 13

Accepted Solution

by:
agarwalrahul earned 500 total points
ID: 34924732
Write this code in LoadComplete event where you can find FindControl method will work according to me.

Dim ctrlname As String = Page.Request.Params.Get("__EVENTTARGET")
        Dim cntControl As Control = Nothing
        Dim strID As String = ""
        Dim lbtn As LinkButton = Nothing

        If Not (ctrlname Is Nothing) And (ctrlname <> String.Empty) Then
            cntControl = Me.Page.FindControl(ctrlname)
            lbtn = DirectCast(cntControl, LinkButton)
            If lbtn.CommandName = "AddRow" Then
                response.write("Add clicked")
            ElseIf lbtn.CommandName = "Delete" Then
                response.write("Delete clicked")
            Else
                response.write("Something Else triggered")
            End If

        Else
            response.write("No control was triggered")
        End If
0
 

Author Comment

by:SamJolly
ID: 34924962
Hi,

Thanks for your answer. I will not be able to use your approach since I am using a User Control which does not support the LoadComplete event as far as I can see.

Thoughts?

Thanks,

Sam
0
 

Author Closing Comment

by:SamJolly
ID: 35076401
thks
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Parsing a CSV file is a task that we are confronted with regularly, and although there are a vast number of means to do this, as a newbie, the field can be confusing and the tools can seem complex. A simple solution to parsing a customized CSV fi…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
With the power of JIRA, there's an unlimited number of ways you can customize it, use it and benefit from it. With that in mind, there's bound to be things that I wasn't able to cover in this course. With this summary we'll look at some places to go…

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now