Dynamic Control creation index changed issue

Thulasiram pakala

I create dyunamic dropdown s and text boxex if i select drop down other district that related vilages not changed how can i solve this isssye design side i put upadat pannel in server side i create drop down and binding index changed is not wokring

2 Replies

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Srinivasan Ramamoorthi4y ago
Check this link for reference

https://forums.asp.net/t/1435911.aspx?Dynamically+created+dropdown+does+not+fire+selected+Index+Change+event
Sachin Singh4y ago
This happens because of page life cycle

If the control is only created when an event is fired, then when your index changed event fires the control doesn't exist to bind it to on the postback.

Example:
1. MyEvent fires. Drop-down created. Event Handler specified.
2. Index Changed event triggered. Page reloads. Drop-down not found, cannot fire.
You have to ensure the drop-down is created before .NET attemps to handle the event.

solution:- Create dynamic controls inside OnPageComplete event

protected void Page_LoadComplete(object sender, EventArgs e)
{
    // yr control
    this.myPlaceHolder.Controls.Add(Yrcontrol);
}

https://stackoverflow.com/questions/11126029/dynamically-added-dropdownlists-are-not-firing-selectedindexchanged-event