/// <summary>
/// 删除用户
/// </summary>
/// <param name="id">将删除的用户的ID</param>
/// <returns>状态码，<see cref="StatusCodes.Status204NoContent"/>代表删除成功，<see cref="StatusCodes.Status404NotFound"/>代表未找到</returns>
public async Task <int> DeleteUserAsync(int id)
{
// 获取用户
UserData data = await dataContext.FindAsync <UserData>(id);
if (data == null)
{
return(StatusCodes.Status404NotFound);
}
do
{
// 在Auth0上删除
await userClient.DeleteAsync(data.StringUserID);
} while (null != await userClient.GetAsync(data.StringUserID));
// 在本地数据库中删除
dataContext.Remove <UserData>(data);
dataContext.SaveChanges();
return(StatusCodes.Status204NoContent);
}