Roles

// Creates a new role object
RoleInfo newRole = new RoleInfo();

// Sets the role properties
newRole.RoleDisplayName = "New role";
newRole.RoleName = "NewRole";
newRole.SiteID = SiteContext.CurrentSiteID;

// Verifies that the role is unique for the current site
if (!RoleInfoProvider.RoleExists(newRole.RoleName, SiteContext.CurrentSiteName))
{
    // Saves the role to the database
    RoleInfoProvider.SetRoleInfo(newRole);
}
else
{
    // A role with the same name already exists on the site
}

// Gets the role
RoleInfo updateRole = RoleInfoProvider.GetRoleInfo("NewRole", SiteContext.CurrentSiteID);
if (updateRole != null)
{
    // Updates the role's properties
    updateRole.RoleDisplayName = updateRole.RoleDisplayName.ToLowerCSafe();

    // Saves the changes to the database
    RoleInfoProvider.SetRoleInfo(updateRole);
}

// Gets all roles whose name starts with 'NewRole'
var roles = RoleInfoProvider.GetRoles().WhereStartsWith("RoleName", "NewRole");

// Loops through individual roles
foreach (RoleInfo modifyRole in roles)
{
    // Updates the role properties
    modifyRole.RoleDisplayName = modifyRole.RoleDisplayName.ToUpper();

    // Saves the changes
    RoleInfoProvider.SetRoleInfo(modifyRole);
}

// Gets the role
RoleInfo deleteRole = RoleInfoProvider.GetRoleInfo("NewRole", SiteContext.CurrentSiteID);

if (deleteRole != null)
{
    // Deletes the role
    RoleInfoProvider.DeleteRoleInfo(deleteRole);
}

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("Username");

bool checkGlobalRoles = true;
bool checkMembership = true;

// Checks whether the user is assigned to a role with the "Rolename" code name
// The role can be assigned for the current site, as a global role, or indirectly through a membership
bool result = user.IsInRole("Rolename", SiteContext.CurrentSiteName, checkGlobalRoles, checkMembership);

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("Username");

if (user != null)
{
    // Gets the user's roles
    var userRoleIDs = UserRoleInfoProvider.GetUserRoles().Column("RoleID").WhereEquals("UserID", user.UserID);
    var roles = RoleInfoProvider.GetRoles().WhereIn("RoleID", userRoleIDs);

    // Loops through the roles
    foreach (RoleInfo role in roles)
    {                       
        // Process the role
    }
}

// Gets the role from the current site
RoleInfo role = RoleInfoProvider.GetRoleInfo("Rolename", SiteContext.CurrentSiteName);

if (role != null)
{
    // Gets the role's users
    var roleUserIDs = UserRoleInfoProvider.GetUserRoles().Column("UserID").WhereEquals("RoleID", role.RoleID);
    var users = UserInfoProvider.GetUsers().WhereIn("UserID", roleUserIDs);

    // Loops through the users
    foreach (UserInfo user in users)
    {
        // Process the user
    }
}

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("Username");

// Gets the role
RoleInfo role = RoleInfoProvider.GetRoleInfo("Rolename", SiteContext.CurrentSiteName);

if ((user != null) && (role != null))
{
    // Adds the user to the role
    UserInfoProvider.AddUserToRole(user.UserName, role.RoleName, SiteContext.CurrentSiteName);
}

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("Username");

// Gets the role
RoleInfo role = RoleInfoProvider.GetRoleInfo("Rolename", SiteContext.CurrentSiteName);

if ((user != null) && (role != null))
{
    // Removes the user from the role
    UserInfoProvider.RemoveUserFromRole(user.UserName, role.RoleName, SiteContext.CurrentSiteName);
}

// Gets the module permission
PermissionNameInfo permission = PermissionNameInfoProvider.GetPermissionNameInfo("Read", "CMS.Content", null);

// Gets the role
RoleInfo role = RoleInfoProvider.GetRoleInfo("Rolename", SiteContext.CurrentSiteID);

if ((permission != null) && (role != null))
{
    // Creates an object representing the role-permission relationship
    RolePermissionInfo newRolePermission = new RolePermissionInfo();

    // Assigns the permission to the role
    newRolePermission.PermissionID = permission.PermissionId;
    newRolePermission.RoleID = role.RoleID;

    // Saves the role-permission relationship into the database
    RolePermissionInfoProvider.SetRolePermissionInfo(newRolePermission);
}

// Gets the module permission
PermissionNameInfo permission = PermissionNameInfoProvider.GetPermissionNameInfo("Read", "CMS.Content", null);

// Gets the role
RoleInfo role = RoleInfoProvider.GetRoleInfo("Rolename", SiteContext.CurrentSiteID);

if ((permission != null) && (role != null))
{
    // Gets the object representing the role-permission relationship
    RolePermissionInfo deleteRolePermission = RolePermissionInfoProvider.GetRolePermissionInfo(role.RoleID, permission.PermissionId);

    if (deleteRolePermission != null)
    {
        // Removes the permission from the role
        RolePermissionInfoProvider.DeleteRolePermissionInfo(deleteRolePermission);
    }
}

// Gets the role
RoleInfo role = RoleInfoProvider.GetRoleInfo("Rolename", SiteContext.CurrentSiteID);

// Gets the UI element (the element representing the Design tab in the Pages application in this case)
UIElementInfo element = UIElementInfoProvider.GetUIElementInfo("CMS.Design", "Design");

if ((role != null) && (element != null))
{
    // Creates an object representing the role-UI element relationship
    RoleUIElementInfo newRoleElement = new RoleUIElementInfo();

    // Assigns the UI element to the role
    newRoleElement.RoleID = role.RoleID;
    newRoleElement.ElementID = element.ElementID;

    // Saves the new relationship to the database
    RoleUIElementInfoProvider.SetRoleUIElementInfo(newRoleElement);
}

// Gets the role
RoleInfo role = RoleInfoProvider.GetRoleInfo("Rolename", SiteContext.CurrentSiteID);

// Gets the UI element (the element representing the Design tab in the Pages application in this case)
UIElementInfo element = UIElementInfoProvider.GetUIElementInfo("CMS.Design", "Design");

if ((role != null) && (element != null))
{
    // Gets the object representing the relationship between the role and the UI element
    RoleUIElementInfo deleteRoleElement = RoleUIElementInfoProvider.GetRoleUIElementInfo(role.RoleID, element.ElementID);

    if (deleteRoleElement != null)
    {
        // Removes the UI element from the role
        RoleUIElementInfoProvider.DeleteRoleUIElementInfo(deleteRoleElement);
    }
}