Wednesday, October 28, 2009

Watch out for dispose issue in the snippets for Visual Web Parts

The code snippet below has an issue that you need to watch out...
The dispose guidelines have NOT changed in SP2010, so you have to be careful:

protected void Page_Load(object sender, EventArgs e)
SPWeb thisWeb = null;
TreeNode node;
thisWeb = SPContext.Current.Web;
//Add the Web's title as the display text for the tree node, and add the URL as the NavigateUri
node = new TreeNode(thisWeb.Title, null, null, thisWeb.Url, "_self");
//The Visual Web Part has a treeview control called siteStructure
//Get a reference to the current node, so child nodes can be added in the correct position
TreeNode parentNode = node;
//Iterate through the Lists collection of the Web
foreach (SPList list in thisWeb.Lists)
if (!list.Hidden)
node = new TreeNode(list.Title, null, null, list.DefaultViewUrl, "_self");
foreach (SPWeb childWeb in thisWeb.Webs)
//Call our own helper function for adding each child Web to the tree
addWebs(childWeb, parentNode);
// have to dispose those
// you should use a try finally block to trap exceptions,
// but at least do:


// you should not dispose the web that you got from the context
// note that this finally block is obsolete now


Update: These issues have been fixed thanks to Paul Andrew.

Developer Readiness for SharePoint 2010

10 modules to get ready to develop on SharePoint 2010...

It is a work in progress, and the virtual labs are not there yet.

If you want to set up your development environment, you should check Setting Up the Development Environment for SharePoint Server, which is also preliminary and is subject to change. Who is not subject to a change nowadays :)

Happy SharePointing...

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Hello SP2010


Re-igniting (:)) my blog for 2010...
As I go deeper into SP2010, I will share my findings here.
Since I keep my expectations high, I somewhat expect to be disappointed to a certain degree.
But will keep my comments on the constructive side.

Happy SharePointing...

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