Who Calls the First OnLoad Call in Page

asp.net 3.5 Ive been sitting with the Reflector to find out - who is First(!) calling the OnLoad Method which activates the event for all subscribers i didnt find it.

im not talking about the AutoEvenntWireup situation ( which is not relevant here) because this开发者_如何学Go stage happens later...

im talking about : who first Activates the Control.OnLoad Method ?? i want to see it in the reflector and could find the activation ! i can find only the Method signature

Page.ProcessRequestMain() calls Page.LoadRecursive(), which in turn calls Page.OnLoad().

The relevant code (disassembled with ILSpy) is:

internal virtual void LoadRecursive()
{
    if (this._controlState < ControlState.Loaded) {
        if (this._adapter != null) {
            this._adapter.OnLoad(EventArgs.Empty);
        } else {
            this.OnLoad(EventArgs.Empty);  // ** Here. **
        }
    }
    if (this._occasionalFields != null
        && this._occasionalFields.Controls != null) {
        string collectionReadOnly
            = this._occasionalFields.Controls.SetCollectionReadOnly(
                "Parent_collections_readonly");
        int count = this._occasionalFields.Controls.Count;
        for (int i = 0; i < count; i++) {
            this._occasionalFields.Controls[i].LoadRecursive();
        }
        this._occasionalFields.Controls.SetCollectionReadOnly(
            collectionReadOnly);
    }
    if (this._controlState < ControlState.Loaded) {
        this._controlState = ControlState.Loaded;
    }
}