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Abort event through plugins

Suppose you are writing a pre -event plugin in which you compare to  old and new values and on certain condition would like to cancel the Save or  Update and stop the execution, it was simple in CRM 3 with an Abort() method while in CRM 4, you have to manually raise and throw a  Invalid-Plugin-Exception, while this gives a dirty error message on your MSCRM screen, you can make it better by entering you own Message explaining why the record could not be saved: throw new InvalidPluginExecutionException("Execution has been stopped due to this reason");
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CRM 2011 Useful JavaScript tidbits

http://www.powerobjects.com/blog/2011/01/14/crm-2011-useful-javascript-tidbits/ Get the value from a CRM field var varMyValue = Xrm.Page.getAttribute(“CRMFieldSchemaName”).getValue() ; Set the value of a CRM field Xrm.Page.getAttribute(“po_CRMFieldSchemaName”).setValue(‘My New Value’); Hide/Show a tab/section Xrm.Page.ui.tabs.get(5).SetVisible(false); Xrm.Page.ui.tabs.get(5).SetVisible(true); Call the onchange event of a field Xrm.Page.getAttribute(“CRMFieldSchemaName”).fireOnChange(); Get the selected value of picklist Xrm.Page.getAttribute(“CRMFieldSchemaName”).getSelectedOption().text; Set the requirement level Xrm.Page.getAttribute(“CRMFieldSchemaName”).setRequiredLevel(“none”); Xrm.Page.getAttribute(“CRMFieldSchemaName”).setRequiredLevel(“required”); Xrm.Page.getAttribute(“CRMFieldSchemaName”).setRequiredLevel(“recommended”); Set the focus to a field Xrm.Page.getControl(“CRMFieldSchemaName”).setFocus(true); Stop an on save event event.returnValue = false; Return array
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Creating Email through Plugin / SDK in CRM 4 - line breaks don't work

You may have noticed when you create email using a sample code like below in a plugin or for that matter any other SDK based assembley for MS CRM. Your line breaks : \n or \r or System.Environment.NewLine will not work.           email Email = new email();                          Email.to = new activityparty[] { toParty };                      Email.from = new activityparty[] { fromParty };                      Email.regardingobjectid = regardingObject;                      Email.subject = "Hello!!";                      Email.description = "Dear, line 1" +                                System.Environment.NewLine+                          "my message for your - line 2";                      Email.directioncode = new CrmBoolean();                      Email.directioncode.Value = true;                                            Guid _emailId = _service.Create(Email);                                            SendEmailRequest sendEmailReq
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