How do I convert a C# byte array into structured data?

I am passing 64 byte data packets over USB to a microcontroller. In the microcontroller C code the packets have the structure, typedef union { unsigned char data[CMD_SIZE]; cmd_get_t get; // plus more union options } cmd_t; with typedef struct { unsigned char cmd; //!< Command ID unsigned char id; //!< Packet ID unsigned char get_id; //!&

如何将C#字节数组转换为结构化数据?

我通过USB将64字节数据包传递给微控制器。 在微控制器的C代码中,数据包具有结构, typedef union { unsigned char data[CMD_SIZE]; cmd_get_t get; // plus more union options } cmd_t; 同 typedef struct { unsigned char cmd; //!< Command ID unsigned char id; //!< Packet ID unsigned char get_id; //!< Get identifier unsigned char rfu[3];

How to send GUIDs efficiently (not as strings)

I have a collection containing a LOT of Data Transfer Objects that I need to send to a Silverlight client over WCF. I'm using the default DataContractSerializer and an HTTPS channel. Here's an example of one type of DTO. [DataContract(Namespace = Constants.OrgStructureNamespace)] public class EntityInfo : IExtensibleDataObject { [DataMember] public Guid EntityID { get; set; }

如何有效地发送GUID(而不是字符串)

我有一个包含很多数据传输对象的集合,我需要通过WCF发送到Silverlight客户端。 我正在使用默认的DataContractSerializer和一个HTTPS通道。 以下是一种DTO的例子。 [DataContract(Namespace = Constants.OrgStructureNamespace)] public class EntityInfo : IExtensibleDataObject { [DataMember] public Guid EntityID { get; set; } [DataMember] public EntityType EntityType { get; set; } [DataMember] pub

HttpClient POST generates GET instead

Lack of sleep and hours of staring at my code made me give in. Here is my problem: I want to send a POST request within my c# Forms app, and retrieve the result. Everything works, except for transmitting the POST body: Instead of my contents, the request turns up empty and, as I found out only a longtime later, with a GET REQUEST_METHOD instead. Server side should not be the problem, when

HttpClient POST生成GET

缺乏睡眠和盯着我的代码几小时让我屈服。 这是我的问题: 我想在我的c#Forms应用程序中发送POST请求,并检索结果。 除了发送POST正文之外,一切正常:除了我的内容之外,请求变成空的,而且,正如我以后发现的,很长一段时间,而是使用GET REQUEST_METHOD 。 服务器端不应该是问题,当我通过网页表单(HTML)发送请求时,一切正常。 C#: async Task<string> reqres(string name, string logs) { using (v

What are your most useful custom ASP.NET MVC 2.0 Validation Attributes

What are the custom ASP.NET MVC model validation attributes that you use. It seems that there are a ton of possibilities (zip code, email address, date in the past, etc.) but I haven't found any good sources where these are shared. I'll start the list with the following: ASP.NET MVC 3 Credit Card Validator If you use the MVC Foolproof project on codeplex you will get a bunch of read

什么是您最有用的自定义ASP.NET MVC 2.0验证属性

什么是您使用的自定义ASP.NET MVC模型验证属性。 似乎有很多可能性(邮政编码,电子邮件地址,过去的日期等),但我没有找到任何可以共享这些资源的良好来源。 我将从以下列表开始: ASP.NET MVC 3信用卡验证器 如果你在codeplex上使用MVC Foolproof项目,你会得到一堆准备使用的验证器 运算符验证器 [Is] [EqualTo] [NotEqualTo] [GreaterThan] [LessThan] [GreaterThanOrEqualTo] [LessThanOrEqualTo] 必需的验证器

Sending HTTP requests with C# HttpWebRequest or WebClient?

I can use both HttpWebRequest to send an HTTP request and get an HTTP response without a WebClient . When should you use HttpWebRequest and when should you use WebClient ? WebClient can be used when you don't need any fine-tuning. When using HttpWebRequest, you can control various options, including timeouts (very important). So basically - WebClient for toy projects / POCs, HttpWebReq

使用C#HttpWebRequest或WebClient发送HTTP请求?

我可以同时使用HttpWebRequest发送HTTP请求,并在没有WebClient情况下获得HTTP响应。 什么时候应该使用HttpWebRequest ,何时使用WebClient ? 当您不需要任何微调时,可以使用WebClient。 当使用HttpWebRequest时,你可以控制各种选项,包括超时(非常重要)。 所以基本上 - 用于玩具项目/ POC的WebClient,用于实际业务的HttpWebRequest。 我个人总是使用WebClient。 API看起来更简单。 它在封面下使用HttpWebReque

REST API Put large data

I have a REST API implemented in microsoft Web API. In my client i use HttpRequestMessage and HttpResponseMessage. When i am sending a small class, I serialize it to JSON and then send it. Soon, my class becomes bigger, and I need to JSON the class, zip it (in memory) and send to server. I can no longer use the same technique, I need to send the zip in chunks. What is the proper way to a

REST API放大数据

我在Microsoft Web API中实现了一个REST API。 在我的客户端中,我使用HttpRequestMessage和HttpResponseMessage。 当我发送一个小类时,我将它序列化为JSON然后发送它。 很快,我的类变得更大,我需要JSON类,将其压缩(在内存中)并发送到服务器。 我不能再使用相同的技术,我需要以大块的形式发送zip文件。 什么是实现它的正确方法? 我已阅读此帖将文件和关联数据发布到RESTful WebService(最好是JSON) 需要一

How should data be accessed. The working practic

I am newbie C# developer. When I just have started to learn programming thins were pretty simple, you see the problem, you develop solution, test it and it works, that simple. Then you find out the design patterns and the whole abstraction thing, and you begin to spend more time on the code that yields no results, always tiring to protect code from possible changes in future. More time less r

应该如何访问数据。 工作实践

我是新手C#开发人员。 当我刚刚开始学习编程时,变得非常简单,你会发现问题,你开发解决方案,测试它并且工作,这很简单。 然后,您会发现设计模式和整个抽象事物,并且您将开始花更多时间在代码上,而不会产生任何结果,并且始终努力保护代码免受未来可能的更改影响。 更省时间的结果。 对于无聊的介绍感到抱歉,但我只是想表明我现在有多沮丧。 有很多由微软自己提供的数据访问技术,甚至是第三方公司提供的大量技术

Ninject 2.1 ActivationException : Error activating string

I am confused about why I am receiving "Ninject.ActivationException : Error Activating string No matching bindings are available, and the type is not self-bindable" in random bindings. If I leave the binding for IMedia in place it will throw the ActivationException, but if I use the CallbackProvider it works. All of these classes are structured the same with a few different properties

Ninject 2.1 ActivationException:激活字符串时出错

我很困惑为什么我在随机绑定中收到“Ninject.ActivationException:错误激活字符串没有匹配的绑定可用,并且类型不可自行绑定”。 如果我将IMedia的绑定放在适当的位置,它将抛出ActivationException,但如果我使用CallbackProvider,它就会起作用。 所有这些类的结构都与几个不同的属性相同。 我很困惑,为什么ILocationType,IMedia和IFarmDataContext会引发ActivationException,而其他的则不会。 有任何想法吗? /********

C# Obscure error: file '' could not be refactored

Sometimes, I come across a property that, when I try to rename it using the built-in Visual Studio refactoring option, I get a dialog that says: The file '' could not be refactored. Object reference not set to an instance of an object. Do you wish to continue with the refactoring? [ ] Ignore further refactoring errors [ Yes ] [ No ] The dialog actually shows empty apostrophes whe

C#模糊错误:文件''无法重构

有时,我遇到一个属性,当我尝试使用内置的Visual Studio重构选项对其进行重命名时,我得到一个对话框,其中显示: 文件''不能被重构。 你调用的对象是空的。 你想继续重构吗? []忽略进一步的重构错误[是] [否] 该对话框在引用文件时实际上显示空的撇号。 Google不提供任何帮助。 我开始认为这是一个晦涩的Visual Studio错误,我应该将其报告给Microsoft Connect。 以为我会看到你们中的任何一个人在第一次

If strings are immutable in .NET, then why does Substring take O(n) time?

Given that strings are immutable in .NET, I'm wondering why they have been designed such that string.Substring() takes O( substring.Length ) time, instead of O(1) ? ie what were the tradeoffs, if any? UPDATE: I liked this question so much, I just blogged it. See Strings, immutability and persistence The short answer is: O(n) is O(1) if n does not grow large. Most people extract tiny s

如果字符串在.NET中不可变,那么为什么子字符串需要O(n)次?

鉴于字符串在.NET中是不可变的,我想知道为什么它们被设计成string.Substring()需要O( substring.Length )时间,而不是O(1) ? 即什么是权衡,如果有的话? 更新:我非常喜欢这个问题,我只是博客。 请参阅字符串,不变性和持久性 简短的回答是: 如果n不增长,则O(n)为O(1)。 大多数人从细小的字符串中提取细小的子串,所以复杂性如何逐渐增长是完全不相关的。 长的答案是: 一个不可变的数据结构,使得实例