Developer's Guide - EPiServer World

130 | Developer’s Guide EPiServer Community 3.1
// updating the data
public static void UpdateMyClass(MyClass mc)
{
bool inTransaction = DatabaseHandler.InTransaction;
if (!inTransaction)
DatabaseHandler.BeginTransaction();
try
{
DatabaseHandler.
ExecuteNonQuery(true, "spUpdateMyClass", parameters));
base.UpdateEntity(mc);
if (!inTransaction)
DatabaseHandler.Commit();
}
catch (Exception)
{
if (!inTransaction)
DatabaseHandler.Rollback();
throw;
}
}
}
UpdateEntity saves all categories, tags, attributes and rating settings on MyClass. UpdateEntity has two overloads, during
an insert we call the overload where we can pass the new id, since it’s not in our object at the moment, and when we
do an update, we simply only pass the “mc” variable. This is important to remember, since when passing an ID some
initialization may occur which is unnecessary during an update, so keep track of which overload you call.
3.2.1 Retrieving categories for MyClass
To get a collection of all categories connected to an entity, you just call the Categories property on the categorizable
entity MyClass just as for any EPiServer Community object.
//Get the MyClass to check for categories
MyClass myClass = MyClassHandler.GetMyClass(1);
//Get the categories for the blog
CategoryCollection categoryCollection = myClass.Categories;
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