How to give an SPGroup permissions for an SPItem?

Question

I tried to find a simple example how to give a certain Sharepoint group X, a permission level Y, for list item Z - but can\'t find example code.

The shortest code I

Answer 1

Actually it was rather easy - instead of the SPRoleAssignment("user","name"...) I could just add an SPGroup to the role assignment and it worked! Full code following:

//note: using SiteGroups is "safer",
//because also groups which don't yet have any permissions are included
SPGroup spGroup = spWeb.SiteGroups["MyGroup"];
SPRoleDefinition spRole = spWeb.RoleDefinitions["Read"]; 

SPRoleAssignment roleAssignment= new SPRoleAssignment(spGroup);
roleAssignment.RoleDefinitionBindings.Add(spRole);

SPListItem listItem = spWeb.GetListItem("http://<URL to item somewhere on the Site>");
listItem.BreakRoleInheritance(true);
listItem.RoleAssignments.Add(roleAssignment);
listItem.Update();