SharePoint: How To Create a SharePoint Permission Group and Add Users Programmatically
Using C# and SharePoint Object Model I will show you how to add a user to an existing or newly created SharePoint Permission Group.
I was working on a project that requires a domain user to be added to the site’s visitors group automatically base on events, and my project is developed in Microsoft Visual Studio so I need write some code to achieve this.
Below is an example code snippet that will show you how to to use SiteGroups.Add() to create a new SharePoint Group and assign the Read permission level by using RoleDefinitionBindings.Add(), add a default user and a group owner:
using (var spSite = new SPSite("SiteURL")) { using (var web = spSite.OpenWeb()) { var groupName = "Group Name"; var groupDescription = "Group Description"; var groupOwner = "contoso\\\jbloggs"; var defaultUser = "contoso\\\jdoe"; web.SiteGroups.Add(groupName, groupOwner, defaultUser, groupDescription); var group = web.SiteGroups[groupName]; var spRoleAssignment = new SPRoleAssignment(group); var permissionName = "Read"; spRoleAssignment.RoleDefinitionBindings.Add(web.RoleDefinitions[permissionName]); web.RoleAssignments.Add(spRoleAssignment); web.Update(); } }