如何以编程方式登录Sitecore？

using Sitecore.Configuration;
using Sitecore.Data;
using Sitecore.Data.Items;
using Sitecore.SecurityModel;

// 创建Sitecore上下文
Database database = Factory.GetDatabase("master");

// 登录操作
using (new SecurityDisabler())
{
    bool loginSuccess = Sitecore.Security.Authentication.AuthenticationManager.Login("username", "password");
    if (loginSuccess)
    {
        // 执行其他操作
        Item homeItem = database.GetItem("/sitecore/content/Home");
        string itemName = homeItem.DisplayName;
    }
}