Finding Buried Controls
- by Bunch
This post is pretty specific to an issue I had but still
has some ideas that could be applied in other scenarios. The problem I had was
updating a few buttons so their Text values could be set in the code behind
which had a method to grab the proper value from an external source. This was so
that if the application needed to be installed by a customer using a language
other than English or needed a different notation for the button's Text they
could simply update the database.
Most of the time this was no big deal. However I had one instance where the
button was part of a control, the button had no set ID and that control was only
found in a dll. So there was no markup to edit for the Button. Also updating the
dll was not an option so I had to make the best of what I had to work with.
In the cs file for the aspx file with the control on it I added the
Page_LoadComplete. The problem button was within a GridView so I added a foreach
to go through each GridViewRow and find the button I needed. Since I did not
have an ID to work with besides a random
ctl00$main$DllControl$gvStuff$ctl03$ctl05 using the GridView's FindControl was
out. I ended up looping through each GridViewRow, then if a RowState equaled
Edit loop through the Cells, each control in the Cell and check each control to
see if it held a Panel that contained the button. If the control was a Panel I
could then loop through the controls in the Panel, find the Button that had text
of "Update" (that was the hard coded part) and change it using the method to
return the proper value from the database.
if (rowState.Contains("Edit")){ foreach (DataControlFieldCell
rowCell in gvr.Cells) { foreach (Control ctrl in
rowCell.Controls) { if (ctrl.GetType() == typeof(Panel))
{ foreach (Control childCtrl in ctrl.Controls) { if
(childCtrl.GetType() == typeof(Button)) { Button update =
(Button)childCtrl; if (update.Text == "Update") {
update.Text = method to return the external value for the button's
text; } } } } } }}
Tags: ASP.Net, CSharp
