希望你能在这里帮助我.我有一个预订列表,我想在每组TourOperator中获得前两行.
这是一个数据样本:
List<Booking> list = new List<Booking>();
list.Add(new Booking() { BookingNo = "31111111", DepDate = new DateTime(2011, 5, 1), TourOperator = "SPI" });
list.Add(new Booking() { BookingNo = "32222222", DepDate = new DateTime(2011, 5, 2), TourOperator = "SPI" });
list.Add(new Booking() { BookingNo = "33333333", DepDate = new DateTime(2011, 5, 3), TourOperator = "SPI" });
list.Add(new Booking() { BookingNo = "34444444", DepDate = new DateTime(2011, 5, 4), TourOperator = "SPI" });
list.Add(new Booking() { BookingNo = "35555555", DepDate = new …Run Code Online (Sandbox Code Playgroud) 我在类库中有一个带有自定义Cache对象的WebSite.所有项目都运行.NET 3.5.我想将此类转换为使用会话状态而不是缓存,以便在我的应用程序回收时保留状态服务器中的状态.但是,当我从Global.asax文件访问方法时,此代码抛出"HttpContext.Current.Session为null"的异常.我这样叫这个班:
Customer customer = CustomerCache.Instance.GetCustomer(authTicket.UserData);
Run Code Online (Sandbox Code Playgroud)
为什么对象总是为空?
public class CustomerCache: System.Web.SessionState.IRequiresSessionState
{
private static CustomerCache m_instance;
private static Cache m_cache = HttpContext.Current.Cache;
private CustomerCache()
{
}
public static CustomerCache Instance
{
get
{
if ( m_instance == null )
m_instance = new CustomerCache();
return m_instance;
}
}
public void AddCustomer( string key, Customer customer )
{
HttpContext.Current.Session[key] = customer;
m_cache.Insert( key, customer, null, Cache.NoAbsoluteExpiration, new TimeSpan( 0, 20, 0 ), CacheItemPriority.NotRemovable, null );
}
public Customer GetCustomer( string key ) …Run Code Online (Sandbox Code Playgroud) 我在 Visual Studio 中使用“文件”->“新建项目”使用 Core 2.1 创建了一个标准 ASP.NET Core MVC 网站。
Startup.cs 中是样板代码
public void ConfigureServices(IServiceCollection services)
{
services.Configure<CookiePolicyOptions>(options =>
{
// This lambda determines whether user consent for non-essential cookies is needed for a given request.
options.CheckConsentNeeded = context => true;
options.MinimumSameSitePolicy = SameSiteMode.None;
});
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Home/Error"); …Run Code Online (Sandbox Code Playgroud) 因此,我们从一家安全公司获得这份报告称,我们在IIS 8.0上运行的MVC网站容易受到HTTP后DoS攻击速度缓慢的影响.报告指出我们应该
<RequestLimits>元素,特别是maxAllowedContentLength,maxQueryString和maxUrl属性.<headerLimits>为配置Web服务器将接受的标头的类型和大小. <limits><WebLimits>麻烦的是我很难找到关于如何设置这些值的任何建议.例如.minBytesPerSecond默认为240,但是应该如何防止SlowHTTPPost攻击呢?
干杯Jens
我有一个名为ShoppingService.sln的VS2013解决方案,在TFS源代码控制下有7个项目.现在我想制作解决方案的副本,将其重命名为'BasketService.sln'并再次将其置于源代码管理之下.我不想做原始解决方案的分支,因为两个解决方案应该彼此分开共存.
什么是最快或最好的方法?