Hello,
I've recently set up an ASP.net site (not using MVC.net) to use URL Routing (more on
the code below) - when using user controls on
the site (i.e I've created a "menu" user control to hold menu information)
the page_load event for that control will
fire twice when URLs have more than one variable passed over.
i.e.
pageName/VAR1 : will only
fire the page_load event once.
while
pageName/VAR1/VAR2 : will
fire the page_load event twice.
*Multiple extra VARs added on
the end will still only
fire the page_load event twice*.
Below are
the code snippits from
the files,
the first is
the MapPageRoute, located in
the Global.asax :
// Register a route for
the Example page, with
the NodeID and also
the Test123 variables allowed.
// This demonstrates how to have several items linked with
the page routes.
routes.MapPageRoute(
"Multiple Data Example", // Route name
"Example/{NodeID}/{test123}/{variable}", // Route URL - note
the NodeID bit
"~/Example.aspx", // Web page to handle route
true, // Check for physical access
new System.Web.Routing.RouteValueDictionary
{
{ "NodeID", "1" }, // Default Node ID
{ "test123", "1" }, // Default addtional variable value
{ "variable", "hello"} // Default test variable value
}
);
Next is
the way I've directed to
the page in
the menu item, this is a list item within a UL tag :
<li class="TopMenu_ListItem"><a href="<%= Page.GetRouteUrl("Multiple Data Example", new System.Web.Routing.RouteValueDictionary { { "NodeID", "4855" }, { "test123", "2" } }) %>">Example 2</a></li>
And finally
the control that gets hit multiple times on a page load :
// For use when
the page loads.
protected void Page_Load(object sender, EventArgs e)
{
// Handle
the routing variables.
// this handles
the route data value for NodeID - if
the page was reached using URL Routing.
if (Page.RouteData.Values["NodeID"] != null)
{
nodeID = Page.RouteData.Values["NodeID"] as string;
};
// this handles
the route data value for Test123 - if
the page was reached using URL Routing.
if (Page.RouteData.Values["Test123"] != null)
{
ExampleOutput2.Text = "I am
the output of
the third variable : " + Page.RouteData.Values["Test123"] as string;
};
// this handles
the route data value for variable - if
the page was reached using URL Routing.
if (Page.RouteData.Values["variable"] != null)
{
ExampleOutput3.Text = "I say " + Page.RouteData.Values["variable"] as string;
};
}
Note, that when I'm just hitting
the page and it uses
the default values for items,
the reloads do not happen.
Any help or guidance that anyone can offer would be very much appreciated!
EDIT :
The User Control is only added to
the page once. I've tested
the load sequence by putting a breakpoint in
the page_load event - it only hits twice when
the extra routes are added.
Thanks in Advance,
Paul Hutson
