Custom Sharepoint Groups Through Feature in SharePoint 2010

Through this article I am demonstrating how to create groups after activating the feature.

The following are the steps:

Step 1: Create a new Sharepoint solution using VS 2010. Set the feature scope to "Web".

Step 2: Right-click on the feature then add FeatureEventreciever.cs.

Step 3: Add the following code to the FeatureEventreciever.cs class:

For Creating group:

        /// <summary>
        /// Create group
        /// </summary>
        public static void CreateSubSiteGroup(SPWeb web, string groupName, string PermissionLevel, string groupDescription)
        {
            SPUserCollection users = web.AllUsers;
            SPUser owner = web.SiteAdministrators[0];
            SPMember member = web.SiteAdministrators[0];
            SPGroupCollection groups = web.SiteGroups;
            groups.Add(groupName, member, owner, groupDescription);
            SPGroup newSPGroup = groups[groupName];
            SPRoleDefinition role = web.RoleDefinitions[PermissionLevel];
            SPRoleAssignment roleAssignment = new SPRoleAssignment(newSPGroup);
            roleAssignment.RoleDefinitionBindings.Add(role);
            web.RoleAssignments.Add(roleAssignment);
            web.Update();

        }

For Deleting Group:

        /// <summary>
        /// Delete group for subsite
        /// </summary>
        public static void DeleteSubSiteGroup(SPWeb web, string groupName)
        {
            SPGroupCollection groups = web.SiteGroups;
            groups.Remove(groupName);
            web.Update();

        }

Step 4: Add the following code:

string groupName = "Custom Group";

        /// <summary>
        /// Method to Attach Event receiver on feature activation.
        /// </summary>
        /// <param name="properties">SPFeatureReceiverProperties Properties</param>
        ///
        public static void FeatureActivated(SPFeatureReceiverProperties properties)
        {
            string groupDescription = "My Custom Group";
            try
            {
                using (SPWeb web = properties.Feature.Parent as SPWeb)
                {
                    CreateSubSiteGroup(web, groupName, premissionLevel, groupDescription);
                }

            }
            catch (Exception ex)
            {
                ex.Message;
            }
        }
        /// <summary>
        /// Method to Remove Event receiver on feature deactivation.
        /// </summary>
        /// <param name="properties">SPFeatureReceiverProperties Properties</param>
        public static void FeatureDeactivating(SPFeatureReceiverProperties properties)
        {
            try
            {
                using (SPWeb web = properties.Feature.Parent as SPWeb)
                {
 
                    DeleteSubSiteGroup(web, groupName);
                }
            }
            catch (Exception ex)
            {
                ex.Message;
            }
        }

Step 5: That's it. Deploy this in your server.

Now it's ready. Please let me know if you have any doubt or need clarification.