Need To Be Able To Add/remove As Many Controls As The User Would Like?
Jan 12, 2011
I have page with a LinkButton on it that when clicked, I'd like to add a Usercontrol to the page. I e. The Usercontrol consists of three dropdownlists. The first dropdownlist has it's auotpostback property set to true and hooks up the OnSelectedIndexChanged event that when fired will load the remaining two dropdownlists with the appropriate values.
My problem is that no matter where I put the code in the host page, the usercontrol is not being loaded properly. I know I have to recreate the usercontrols on every postback and I've created a method that is being executed in the hosting pages OnPreInit method. I'm still getting the following error:The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phasesHere is my code:
bool createAgain = false;
IList<FilterOptionsCollectionView> OptionControls
{
[code]...
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{
for (i = 1; i < myCount; i += 1)
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string txtEmplName = "txtEmplName" + i;
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tr.Controls.Remove(t.FindControl(txtEmplPhone));
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tr.Controls.Remove(t.FindControl(txtEmplPosition));
string txtEmplOfficeID = "txtEmplOfficeID" + i;
tr.Controls.Remove(t.FindControl(txtEmplOfficeID));
}
}
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[Code]....
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[Code]....
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