public async Task <IActionResult> AssignRole([FromBody] UserToRoleModel model)
        {
            var user = await userManager.FindByIdAsync(model.UserId);

            var role = await roleManager.FindByIdAsync(model.RoleId);

            if (await userManager.IsInRoleAsync(user, role.Name))
            {
                return(BadRequest(new ReponseStatus {
                    Status = "Failure", Message = "User already has the Role"
                }));
            }


            IdentityResult result = await userManager.AddToRoleAsync(user, role.Name);

            if (result.Succeeded)
            {
                return(Ok(new ReponseStatus {
                    Status = "Success", Message = role.Name + " assigned to User"
                }));
            }

            ReponseStatus respStatus = new ReponseStatus();

            foreach (IdentityError error in result.Errors)
            {
                respStatus.Message = respStatus.Message + error.Description + "\n";
            }

            return(BadRequest(respStatus));
        }
        public async Task <IActionResult> AssignRole([FromBody] UserToRoleModel Model)
        {
            string          userId = Model.UserId;
            ApplicationUser user   = await userManager.FindByIdAsync(userId);

            //Remove Exisint Roles.
            var roles = await userManager.GetRolesAsync(user);

            await userManager.RemoveFromRolesAsync(user, roles.ToArray());

            //

            List <string> roleIds = Model.RoleIds;

            List <RespStatus> ListRespStatus = new List <RespStatus>();

            foreach (string RoleId in roleIds)
            {
                IdentityRole role = await roleManager.FindByIdAsync(RoleId);

                IdentityResult result = await userManager.AddToRoleAsync(user, role.Name);

                RespStatus respStatus;

                if (result.Succeeded)
                {
                    respStatus = new RespStatus()
                    {
                        Message = role.Name + " assigned to User",
                        Status  = "Success"
                    };
                    ListRespStatus.Add(respStatus);
                }
                else
                {
                    respStatus = new RespStatus();
                    foreach (IdentityError error in result.Errors)
                    {
                        respStatus.Message = respStatus.Message + error.Description + "\n";
                        respStatus.Status  = "Failure";
                    }
                    ListRespStatus.Add(respStatus);
                }
            }

            return(Ok(ListRespStatus));
        }