Per Jakobsen

17,981 reputation

1721

bio	website	TheBlackKnightSings.com
	location	Copenhagen, Denmark
	age	51
visits	member for	2 years, 11 months
	seen	13 hours ago
stats	profile views	942

I'm a SharePoint developer who has been programming professionally since 1981, with foucs on SharePoint since 2006.

Current jobs:

"Principal SharePoint Developer" at Denmarks leading SharePoint consultancy firm (ProActive) in Copenhagen/Denmark.
Author/Instructor for DevelopMentor doing SharePoint courses for developers

	17,981 reputation	bio	website	TheBlackKnightSings.com	visits	member for	2 years, 11 months
1721 badges		location	Copenhagen, Denmark		seen	13 hours ago

507 Comments

suggestions reviews revisions comments badges posts accepts all

Mar 26	comment	Page.ClientScript.RegisterClientScriptInclude in Sandbox? There is no way you can make sure that the resource isn't loaded twice if it's something like jQuery where others may include it in their web parts. If you want to prevent yourselves from loading the resource twice then you need to render JavaScript which checks/sets a "global" flag and then load the resource dynamically if it's the first time on the page.
Mar 21	comment	What is the difference between properties.OpenWeb() and properties.Web? SharePoint don't generally deprecate things just because there now is a better option
Jan 10	comment	CAML Query OrderBy ignoring non set values Then use the formular `=IF(ISNUMBER(ArticlePriority),ArticlePriority,999999)`
Jan 4	comment	Saving changes made in a webpart So if all you do in the click event is to set a flag that the button was clicked, then you can check that in a later event when the provided is provided and ready to provide the data
Jan 4	comment	Saving changes made in a webpart What about in the OnPreRender event?
Dec 14	comment	Split page into columns Due to the dynamic and flexible nature of pages in SP2013 MS has decided that the Design view didn't make sense and therefore they removed it
Dec 14	comment	Split page into columns Which kind of page do you want to create? And yes SharePoint designer works fine wieh SharePoint Server unless the administrators has disabled it (and you have the rights to use it)
Nov 7	comment	Why we shouldn't use SPWeb witryna = SPContext.Current.Web; YES, neither Using nor Dispose. Whether you use `SPWeb witryna = SPContext.Current.Web;` or `var witryna = SPContext.Current.Web;` doesn't matter that's exactly the same. (I just prefer `var` when the type is obvious). Using `SPWeb witryna = SPContext.Current.Web;` isn't opening anything it's just making a local variable point to the already opened web, which is passed to all the controls on the page and therefore should be Dispose by your code.
Nov 7	comment	Why we shouldn't use SPWeb witryna = SPContext.Current.Web; See additions to answer
Nov 7	comment	How to show documents in a webpart like Sharepoint does? You can't populate that client side, but you may populate a dummy row on the server and the use that as a template for adding additinal rows client side. The advantage over doing all of the generation client side is that you html will follow changes made in SharePoint
Nov 5	comment	HTTP-500 after creating new web applications Check the Windows Event Logs.
Nov 5	comment	owner field value disappears when coping document to another SC How do you copy the document? It'll be almost impossible to keep the IDs of users in two site collections in sync as thats the ID of the user in the User Information List and depends on the order the users visit/are used in the site
Nov 5	comment	RSS Viewer Can't load Does your sharepoint servers have access to the internet? The RSS webpart is loading it's data on the server not on the client.
Nov 5	comment	Automatically Activate Feature when subsite created Feature Stapling doesn't work with WebTemplates
Nov 5	comment	Sandboxed solutions get all sharepoint lists in sitecollection Thanks for removing the leak.
Nov 4	comment	Sandboxed solutions get all sharepoint lists in sitecollection It very much depends on the classes involved and what you need to do. But I usually prefer to do all the processing while looping through the webs (can be through a delegate). Sometimes it's better to keep the webs for which you return lists alive and dispose them in your own dispose method.
Nov 4	comment	CAML Query for Values Not “In” (with sufficiently different title to let me post the question) From a SQL performance point of view `<In>` is purely suntactic sugar, but SharePoint can handle a lot more values in `<In>` before it breaks.
Nov 4	comment	Sandboxed solutions get all sharepoint lists in sitecollection Note that you'll not be able to use the returned list for anything without causing SharePoint to revitalize the disposed web, which then will leak.
Nov 1	comment	Trouble with Claims Auth What url are you getting the error at? Should be `http://SITE_URL/_trust/`. Anything in the ULS logs?
Nov 1	comment	I loss the listitem which was added to list using Item Added Event Receiver I don't understand your problem, maybe create a new question with your updated code, what you want to do and what the problem is.