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    <p>Don't load everything in the page event in control b, just put a method on control b to be called. Then add an event to control a which the page consumes, when the event is raised, call the load method on control b.</p> <p>Edit: SampleCode</p> <p>Ok so for example, create</p> <ul> <li>a ASPX page</li> <li>2x user controls</li> </ul> <p>Put both user controls into the aspx page.</p> <pre><code> &lt;cc:control1 runat="server" id="control_one" /&gt; &lt;cc:control2 runat="server" id="control_two" /&gt; </code></pre> <p>Then in <strong>control 1</strong>, create a delegate and event.</p> <pre><code> public delegate void MyCustomEvent (EventArgs args); public event MyCustomEvent MyEvent; protected void Page_Load(object sender, EventArgs e) { MyEvent(e); } </code></pre> <p>So I have the event raised on page load. So you would have your logic in there thats required, when your done, calls MyEvent event.</p> <p>In the page you want to add a handler for that event so when it's called you can do something with it.</p> <pre><code> protected override void OnInit(EventArgs e) { control_one.MyEvent += new WebUserControl1.MyCustomEvent(control_one_MyEvent); base.OnInit(e); } void control_one_MyEvent(EventArgs args) { control_two.MyCustomLoad(); } </code></pre> <p>So when the page is initialized I add the event handler. In the event handler I call a custom method on the second control to load stuff.</p> <p>Then in the second control I have:</p> <pre><code> public void MyCustomLoad() { //Stuff only loaded when event is raised and calls this method. } </code></pre> <p>So this allows control 1 to load something, say it's done, when the page knows it's done, it can tell control 2 to do something.</p> <p>Edit: After discussing this with a friend I'll explain what I mean by controlling the order.</p> <p>You cannot control the order of page-life-cycle events. i.e: You can't have Control A, run through all it's page-life-cycle events, then once it's done, have Control B run through all it's page-life-cycle events. </p> <p>If you do-away with the page life cycle, you can do a degree, as my example above shows, create a way of controlling the order in which the controls are rendered. By raising an event(s) at certain points when Control A is finished, you can tell Control B to do something.</p> <p>The intermediate between the two controls is the page which handles the events raised by Control A which calls a method on Control B. You <em>(well you can hack around to do it)</em> can't specifically make Control A tell Control B to do something because that creates a direct dependency between the two controls which is bad.</p>
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    1. COCan you explain a little more on how to add an event and how to get it raised when control A finishes loading? Should it be in Page Load of ControlA?
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    2. CO@RSharma I've updated my answer.
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