Page and Parent property of custom server control

[Charles Zhang]

I created a custom server control that derives from WebControl. I found
Parent and Page property are null for the control I created. But Parent
is a readonly property so that I have no way to assign it a proper value.

By the way, I did no create a constructor for my custom control. I did
not override OnInit() method as well.

Could some one point out what I am doing wrong.
Thanks

Charles Zhang

[Walter Wang [MSFT]]

Hi Charles,

When a control is not added to another control's Controls collection, the
Parent property is null. Also, the Page property is implemented as:

public virtual Page get_Page()
{
if ((this._page == null) && (this.Parent != null))
{
this._page = this.Parent.Page;
}
return this._page;
}

So for your question, this depends on where and when you access the Parent
and Page property. Normally when your control has been added to the Page's
control tree, the Parent and Page property can be used.

Sincerely,
Walter Wang (wa****@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscripti...ult.aspx#notif
ications. If you are using Outlook Express, please make sure you clear the
check box "Tools/Options/Read: Get 300 headers at a time" to see your reply
promptly.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscripti...t/default.aspx.
==================================================

This posting is provided "AS IS" with no warranties, and confers no rights.