I ran into a bug today that was a bit unusual. We have a custom ASP.NET page that shows information from a custom list in SharePoint 2007. That page shows details, including the Author, for attachments. On one particular list item, users started getting...

SharePoint has a lot of JavaScript code to manage UI, and a lot of customization can be done by modifying out-of-box JavaScript.  However, modifying system files is not a good idea.  Instead, you usually will want to copy the file and make your...

This isn’t a SharePoint tip, per se, but it is an interesting way to expand on what the default RequiredFieldValidator control does for you. We already had validation in our custom pages using the RequiredFieldValidator control, and it was working well...

I just spent a couple of hours tracking down an issue where our content type update code wasn’t working for some content types.  The problem ended up being that one content type in the hierarchy had a content type ID that ended with “FF” (such as...

I’m not sure why I didn’t find this earlier, but I have always put a single list instance definition into a single feature. However, I recently had to put together several inter-related lists into a feature (no single list was useful by itself). The first...

When SharePoint starts a workflow on a list for the first time, it has this annoying behavior of adding a workflow status column to the default view of the list. Often times, this information is of no practical use for end users. Unfortunately, there...

Just a quick note on one way to put leading zeros in a SharePoint list field using a Calculated Field. A client wanted a column to show the list item's name, followed by a number that was left-padded with zeros to two digits, like: Addendum-01 ...

SharePoint has a little known web control called SPGridView. This control can give you a SharePoint list-like view of data from any data source you can bind to (from a database or other sources). It also has features to sort, filter and group the data...

It appears that if you have both a Field and a FieldRef definition in your SharePoint list definition file that includes XML (InfoPath) field promotion, you can no longer update the field through the list; you must do it through the XML only. I ran into...

Recently I was faced with the problem of finding an ancestor web (SPWeb object) of the current web. The ancestor needed to be the one just below the RootWeb. I quickly put together a solution that worked, but I later realized that it had massive memory...

I ran into an interesting issue at a customer site. They had dozens of newly created Active Directory groups, but only two of them were showing up when they wanted to create a new audience or specify one of the groups as a target for a list item. It turns...

Sometimes when writing custom code for SharePoint, you want to open the list to which another list field is referring (when it uses a lookup field). I had to do this to put the lookup field values in a custom menu item. Other times, you just want the...

An interesting bit of CSS formatting behavior that I ran across recently at a customer site. They wanted to be able to have long titles in some of their web parts, but it would always make the web part zone expand to fit the text rather than wrapping...

There are many applications that store binary data in blob or varbinary fields of a database, including pictures, Office documents, PDFs and other types of documents. Recently, a customer had the need to display, in SharePoint, an image stored in an Oracle...