Continuing my WSS exam prep, I had a play with Alerts through the SharePoint Object Model… Continue reading “WSS Practice: Creating and deleting Alerts”
SharePoint
WSS Practice: Checking in/out Documents, and Versioning
Well, for the WSS application developer exam, you’re supposed to know about programmatically checking in and out documents:
//*** Check out a document
Console.WriteLine("Check out {0}", myItem["Name"]);
myItem.File.CheckOut();
Console.ReadLine();
//*** Check in a Document (Minor Check in)
myItem.File.CheckIn("Checked in Programmatically", SPCheckinType.MinorCheckIn );
Console.WriteLine("Item Checked in");
Console.ReadLine();
One should also be able to list all versions of a document:
//*** List all versions of a document
Console.WriteLine(myItem.Name);
foreach (SPFileVersion ver in myItem.File.Versions)
{
Console.WriteLine(" - v{0} ({1})", ver.VersionLabel, ver.CheckInComment);
}
Console.ReadLine();
And restore a version:
//*** Restore to version 1.0
myItem.File.CheckOut();
myItem.File.Versions.RestoreByLabel("1.0");
myItem.File.CheckIn("Restored by Program to v1.0");
Console.WriteLine("{0} restored to v1.0", myItem.Name);
All pretty straight forward.
WSS Practice: Attach files to ListItems
Similar to uploading a file, how would we attach a file to an SPListItem? This is slightly different, as a listitem may have more than one attachment….
Well, my code is:
byte[] bytes = File.ReadAllBytes(@"c:somefile.txt");
myListItem.Attachments.AddNow("somefile.txt", bytes);
Yup, not quite the same. I guess it’s ‘cos for Document Libraries, the document is the item, whereas for normal lists, the items may have zero or more documents attached.
Actually, I must try attaching a file to a Document item. I wonder if you can do that?
Edit: Nope, you can’t. Attachments are disabled, and if you try and enable them you get the SPException “Attachments are not allowed for Document Libraries and Surveys“. Which is fair enough.
WSS Practice: Uploading a document
Well, I’ve mentioned uploading via HTTP before, but I must confess, I’d not used the object model. Well, it turns out that it’s just the same as uploading an image (just without thumbnails getting generated…
SPList docs = site.Lists["Documents"];
FileStream fs = new FileStream(@"c:SomeDocument.txt",FileMode.Open,FileAccess.Read);
docs.RootFolder.Files.Add(docs.RootFolder.Url + "/SomeDocument.txt",fs, true);
WSS Practice: Create a Calendar Event
Another thing on the WSS syllabus is “Add a recurring event to a calendar”. Well, I gave it a go, and failed. It was actually pretty tough. In the end, I found myself referring to ‘How to: Add a Recurring Event to Lists on Multiple Sites‘. It’s a pretty good article, and talks about creating a Meeting Workspace and attaching it too, but the short version of it is my code… Continue reading “WSS Practice: Create a Calendar Event”
WSS Practice: Create and Reply to Discussions
Another thing I’d not done through the SharePoint Object Model was create or reply to a Discussion. This sounded a bit more complicated, but I found a helpful post of ‘Common Discussion Operations‘… Continue reading “WSS Practice: Create and Reply to Discussions”
WSS Practice: Upload image to a Pictures Library
I was trying to upload images to a Pictures Library, and getting thumbnailing working, and so on. I found that thumbnailing wasn’t working, so I kept trying to create and upload my own thumbnail, which was pretty dumb. SharePoint will do that for you – but you’ve got to upload your file with a correct extension for an image format… Continue reading “WSS Practice: Upload image to a Pictures Library”
Fast access items in an SPListCollection
What’s the fastest way to access an SPList in an SPListCollection? Well, I can see two alternative ways of getting the list, so I thought I’d test them…
First off, we could get the item by just trying to get it and catching the exception if we fail:
SPList listVariable;
try {
listVariable = mySite.Lists["ListIWant"];
} catch (Exception e) {}
Or we could loop through the lists:
SPList listVariable;
foreach( SPList tempList in mySite.Lists){
if(tempList.Title == "ListIWant") {
listVariable = tempList;
break;
}
}
So, to test this, I built a little test application on the console.
What I found was that loop was always faster. I didn’t try with really large numbers of lists (I only tried up to 20), but I did find that for any probability of the list existing, looping through all the lists was much, much faster (at least 4 times, when the probability of the list we’re looking for was 1; i.e. the list definitely existed!)
There did seem to be a slight load time the first time we accessed the SPWeb.Lists collection, but you have to do that for either method.
WSS Practice: Working with ListItems
I’m preparing for the WSS Application Developer’s exam, and looking through the thing’s you’re supposed to know about, I decided I needed some practice. I’m starting with the very basics – creating, updating and deleting List Items… Continue reading “WSS Practice: Working with ListItems”
WSS Practice: Finally used SPJobDefinition…
One task that I’ve been threatening to do for ages is to build a SharePoint Timer Job. Often a solution needs a bit of code to run periodically, but so far it wasn’t something that I’d tried. Well, I had a go today following Andrew Connell’s MSDN article, and it was very good. Here are my notes though…
Continue reading “WSS Practice: Finally used SPJobDefinition…”
