Difference between SpListItem.SystemUpdate() and SpListItem.Update()

http://bijuva.wordpress.com/2009/05/28/difference-between-splistitem-systemupdate-and-splistitem-update/

Task URL in workflows..

http://suguk.org/forums/thread/4978.aspx

Sharepoint - trying to get value of a task field into a workflow

http://stackoverflow.com/questions/757519/sharepoint-trying-to-get-value-of-a-task-field-into-a-workflow


Guid isApprovedFieldId = worflowProperties.TaskList.Fields["isApproved"].Id;
string approvalStatus = (string)(onTaskChanged1_AfterProperties1.ExtendedProperties[isApprovedFieldId]);