Waiting for an Event to Complete - windows-phone-7.1

Question

In Pivot control all Pivot items content is loading at a time in WindowsPhone 7.1 I am developing Cross Platform application.
Issue:
In my application each Pivot Item having WebBrowser control. When loading all Pivot Item's Content at a time java script calls are conflicted.
Requirement:
If Pivot Control having 4 Pivot Items like item1, item2, item3 and item4, then load item2 after the content of item1 load finished.
EDIT 1: I have tried the following code http://www.c-sharpcorner.com/UploadFile/1d42da/synchronization-events-and-wait-handles-in-C-Sharp/
ManualResetEvent mre = new ManualResetEvent(false);
foreach (PivotDetails pivotdetails in pivtdetailslist)
{
PivotItem pivotitem = new PivotItem();
pivotitem.Header = pivotdetails.header;
WebBrowserControl browsercontrol = new WebBrowserControl(this);
browsercontrol.Navigate(pivotdetails.url);
pivotitem.Content = browsercontrol;
mre.Reset();
myPivot.Items.Add(pivotitem);
mre.WaitOne();
}
private void webBrowser_LoadCompleted(object sender, System.Windows.Navigation.NavigationEventArgs e)
{
mre.Set();
}
EDIT1 Issue: Waiting screen only displaying not able to see Design page.

Answer 1

I have used the following code for "Wait to complete the event"
foreach (PivotDetails pivotdetails in pivtdetailslist)
{
PivotItem pivotitem = new PivotItem();
pivotitem.Header = pivotdetails.header;
WebBrowserControl browsercontrol = new WebBrowserControl(this);
pivotitem.Content = browsercontrol;
mre.Reset();
myPivot.Items.Add(pivotitem);
mre.WaitOne();
}
private void webBrowser_LoadCompleted(object sender, System.Windows.Navigation.NavigationEventArgs e)
{
myPivot.isHitTestVisible = true;
}
private void myPivot_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
Pivot pivot = sender as Pivot;
PivotItem currentPivot= pivot.SelectedItem as PivotItem;
if (currentPivot.Content is WebBrowserControl)
{
WebBrowserControl bc = currentPivot.Content as WebBrowserControl;
if (bc.getWebView().Source == null)
{
bc.Navigate(pivtdetailslist[pivot.SelectedIndex].url);
bc.getWebView().LoadCompleted += new System.Windows.Navigation.LoadCompletedEventHandler(webBrowser_LoadCompleted);
myPivot.IsHitTestVisible = false;
}
}
}