SharePoint Sandbox: How to specify the solution ID

When creating solutions for the SharePoint sandbox, whether it is for SharePoint 2010 or Office365, the solution ID must be given whenever some kind of code-behind is used. This is because SharePoint needs to know which assembly to use. Without the solution ID SharePoint would just look in the GAC for the assembly, which would produce a 'File could not be found' exception.

I will show how to supply the solution ID for a number of SharePoint components, and also describe a work-around in a case where we cannot specify a solution ID.

How to add images to picture library with thumbnails using CAML

Adding images to a SharePoint picture library is done basically like adding any other type of file to a library in SharePoint: You create a module, point it towards the library, and includes the files. Well, there is a catch...

How to create lookup fields in CAML that works

For my first post on this blog I will demonstrate how to avoid the most common problem with deploying SharePoint lookup fields.

Basically, a lookup field is defined using CAML just like any other SharePoint field. However, there is a problem: You need to add a reference to the lookup list. There are several ways to achieve this. Below, I have outlined three standard ways to do this, and a fourth way, my preferred, that handles the problems inherent in each of the other three solutions.