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c#asp.netweb-user-controls

Invoking a method from the parent page after user control has been loaded?

May I know if there is any way to invoke a method from the child page(.aspx) after the page load of the user control is finished?

Right now I have an issue of being unable to retrieve the value from the child page because the variables from the user control has not been assigned the value yet.

To put it simply

FROM MY .ASPX FILE

Page_Load(object sender, EventArgs e)
{
 x = getValueFromUserControl();
}

FROM MY USER CONTROL

Page_Load(object sender, EventArgs e)
{ 
int x = getvalueFromDatabase();
}

getValueFromuserControl()
{
return x;
}

Since the ASP.NET Life Cycle goes from the child page(.aspx) page_load -> user control page_load, I am unable to retrieve the value of x.

That said, ideally I would not like to put the function in the child page and call it from the user control as the user control is being used in other pages.

In short, I would like to invoke a method from my .aspx page after the page_load in my user control ends, Thank you!

Solution

  • Get the value at a later page event:

    protected override void OnLoadComplete(EventArgs e) {
   x = getValueFromUserControl();
}

    Unless, of course, there is a specific reason why you must get the value on Page_Load. There are other, probably more appropriate ways to handle this, but without knowing what x is and what you need to do with it, it is hard to give any other advice. For example, maybe the UserControl should fire an event that is handled by the page.