April 2006
Beginner
1114 pages
98h 16m
English
Content preview from Programming Excel with VBA and .NETBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Authentication and Authorization
The SharePoint server must authenticate the Excel user before you can call any of the Lists Web Service methods. If the user has not been authenticated, a “Maximum retry on connection exceeded” error occurs. In Visual Basic .NET or C# .NET, you authenticate the user from code by creating a Credentials object for the user. For example, the following .NET code passes the user’s default credentials to a web service:
wsAdapter.Credentials = System.Net.CredentialCache.DefaultCredentials
Unfortunately, you can’t do that directly in Excel. Instead, you must use one of the following techniques to connect to the SharePoint server through Excel:
Update or refresh a worksheet list that is shared on the server.
Insert an existing SharePoint list on a worksheet. This can even be a dummy list placed on the server solely for the purpose of establishing connections.
Navigate to the SharePoint server in code as described earlier in this chapter in "Share a List.”
Any of these techniques displays a SharePoint authentication dialog box and establishes a user session for Excel. Afterward, you can call Lists methods and they will be authorized using the current session.
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.