I’ve had a few people ask how to do this recently so, here goes!
Getting knowledge article objects using the SDK is the same as getting any other kind of object except with a slight twist. The System.Knowledge.Article class is one of the few classes in the data model out of the box that has binary data type properties. Here is a look at the class properties on the System.Knowledge.Article class:
See those two properties there that are binary data type – EndUserContent and AnalystContent? That’s the tricky bit (pun intended!).
When we are working with a binary data type property we have to first cast the property value to a Microsoft.EnterpriseManagement.Common.BinaryStream object. Microsoft.EnterpriseManagement.Common.BinaryStream derives from the System.IO.Stream class in the .Net Framework.
Let’s walk through some code. First get a knowledge article object. This is standard stuff.
Next we are going to get the EndUserContent property value and cast it to a BinaryStream object:
Now that we have a Stream to work with we can use a StreamReader to read the binary content into a string:
Viola! Now, another twist is that knowledge in SCSM is stored in RTF format. You don’t want to show the user the RTF format content so you need to use something like a RichTextBox class control to display the content to the user with the RTF formatting tags hidden and showing the text in the correct format.
In this example I simply assign the string (which contains RTF content) to the .Rtf property of the RichTextBox control:
Here is what the simple demo app looks like after I have clicked the button that has a knowledge article containing RTF formatted text in the EndUserContent property:
I’ve uploaded this code sample project to the TechNet Gallery if you want to grab it.