I was reading this answer and it is mentioned that this code; if (data[c] >= 128) sum += data[c]; can be replaced with this one; int t = (data[c] - 128) >> 31; sum += ~t & data[c]; I am having hard time grasping this. Can someone explain how bitwise operators achieve what if statement does? if (data[c] >= 128) sum += data[c]; Clearly adds data[c] to sum if and only
我正在阅读这个答案,并提到这个代码; if (data[c] >= 128) sum += data[c]; 可以用这个替换; int t = (data[c] - 128) >> 31; sum += ~t & data[c]; 我很难理解这一点。 有人可以解释一下,如果声明的做法,按位运算符如何实现? if (data[c] >= 128) sum += data[c]; 当且仅当data[c]大于或等于128时,显然将data[c] sum很容易证明 int t = (data[c] - 128) >> 31; sum += ~t & data
disclosure: I've tried similar question on programmers.stack, but that place is nowhere near activity stack is. Intro I tend to work with lots of large images. They also come in sequences of more than one and have to be processed and played back repeatedly. Sometimes I use GPU, sometimes CPU, sometimes both. Most of access patterns are linear in nature (back and forth) which got me thi
披露:我已经尝试过关于programmers.stack的类似问题,但那个地方远没有活动堆栈。 介绍 我倾向于使用大量大图片。 他们也有不止一个序列,必须重复处理和回放。 有时我会使用GPU,有时候会使用CPU,有时使用两者。 大多数访问模式本质上是线性的(来回),这让我想到了有关数组的更基本的东西,以及如何在给定硬件上编写优化最大内存带宽代码的方法(允许计算不会阻止读/写) 。 测试规格 我已经在2011年的MacbookAi
I have developed an application in c# using visual studio 2015, that copies some files from one directory (source) to another (destination) in general. My problem is that the source path is another computer in a domain. I wish to be able to access the directory and get my files, user the domain, username and password the source computer. I have seen some solution, but I can't get how they
我已经在c#中使用visual studio 2015开发了一个应用程序,它将一些文件从一个目录(源)复制到另一个(目标)。 我的问题是源路径是域中的另一台计算机。 我希望能够访问该目录并获取我的文件,使用源计算机的域名,用户名和密码。 我已经看到了一些解决方案,但我无法得到他们如何访问其他计算机。 我曾经通过使用目录获取我的文件。 GetDirectories(路径),我现在使用它太深,不能改变它平滑。 感谢您帮助解决我的问
I'm writing a program that, among other things, needs to copy a particular file to a network folder. Since I'm on a company network, the credentials needed to access that folder are the same as my Windows credentials. The program works if I open the folder in Explorer, provide my username and password, and then run the uploader. It doesn't work without first providing that usernam
我正在编写一个程序,除其他外,需要将特定文件复制到网络文件夹。 由于我在公司网络上,访问该文件夹所需的凭证与我的Windows凭证相同。 如果我在资源管理器中打开文件夹,提供我的用户名和密码,然后运行上传程序,该程序将起作用。 没有首先提供该用户名和密码,它不起作用。 我如何告诉System.IO将DefaultNetworkCredentials提供给Copy方法? 还是有另一种方法可以用来完成这件事? string pathToFile = "myfile.csv"
C# 2008 SP1 I am using the code below: dt.ReadXml("%AppData%\DateLinks.xml"); However, I am getting an exception that points to the location of where my application is running from: Could not find a part of the path 'D:ProjectsSubVersionProjectsCatDialerbinDebug%AppData%DateLinks.xml'. I thought the %AppData% should find the relative path. When I go Start|Run|%AppData% windows ex
C#2008 SP1 我使用下面的代码: dt.ReadXml("%AppData%\DateLinks.xml"); 但是,我收到一个异常,指向我的应用程序运行的位置: 无法找到'D: Projects SubVersionProjects CatDialer bin Debug %AppData% DateLinks.xml'路径的一部分。 我认为%AppData%应该找到相对路径。 当我去Start|Run|%AppData% Windows资源管理器把我带到那个目录。 由于每台客户端计算机上的用户不同,我无法放入完整路径。
How can I validate a username and password against Active Directory? I simply want to check if a username and password are correct. If you work on .NET 3.5 or newer, you can use the System.DirectoryServices.AccountManagement namespace and easily verify your credentials: // create a "principal context" - e.g. your domain (could be machine, too) using(PrincipalContext pc = new PrincipalContext(
我如何根据Active Directory验证用户名和密码? 我只是想检查用户名和密码是否正确。 如果您使用.NET 3.5或更高版本,则可以使用System.DirectoryServices.AccountManagement命名空间并轻松验证您的凭据: // create a "principal context" - e.g. your domain (could be machine, too) using(PrincipalContext pc = new PrincipalContext(ContextType.Domain, "YOURDOMAIN")) { // validate the credentials bool is
I want to copy the entire contents of a directory from one location to another in C#. There doesn't appear to be a way to do this using System.IO classes without lots of recursion. There is a method in VB that we can use if we add a reference to Microsoft.VisualBasic : new Computer().FileSystem.CopyDirectory(sourceFolder, outputFolder); This seems like a rather ugly hack. Is there a be
我想在C#中将目录的全部内容从一个位置复制到另一个位置。 似乎没有办法做到这一点使用System.IO类没有很多递归。 如果我们添加对Microsoft.VisualBasic的引用,我们可以使用VB中的一种方法: new Computer().FileSystem.CopyDirectory(sourceFolder, outputFolder); 这似乎是一个相当丑陋的黑客。 有没有更好的办法? 更容易//Now Create all of the directories foreach (string dirPath in Directory.GetDirectories(
How do I perform a network login, to access a shared driver for instance, programmatically in c#? The same can be achieved by either attempting to open a share through the explorer, or by the net use shell command. P/Invoke call to WNetAddConnection2 will do the trick. Look here for more info. [DllImport("mpr.dll")] public static extern int WNetAddConnection2A ( [MarshalAs(UnmanagedT
我如何执行网络登录,以访问共享驱动程序为例,以编程方式在C#中? 通过试图通过资源管理器打开共享或通过net use shell命令可以实现同样的目的。 对WNetAddConnection2的P / Invoke调用可以做到这一点。 在这里寻找更多的信息。 [DllImport("mpr.dll")] public static extern int WNetAddConnection2A ( [MarshalAs(UnmanagedType.LPArray)] NETRESOURCEA[] lpNetResource, [MarshalAs(UnmanagedType.LPStr)
I'm trying to create an application that will merge the excel spreadsheets in a given directory into a single, tabbed Excel workbook. I only have access to VS Community 2015, so VSTO is out of the question; I'm using Interop and NPOI 2.1.3.1 instead. Here's my code: files = Directory.GetFiles(sourcePath); XSSFWorkbook test = new XSSFWorkbook(); try { string fPath = files[0];
我正在尝试创建一个应用程序,该程序可将给定目录中的Excel电子表格合并到单个标签化的Excel工作簿中。 我只能访问VS社区2015,所以VSTO是不可能的。 我正在使用Interop和NPOI 2.1.3.1。 这是我的代码: files = Directory.GetFiles(sourcePath); XSSFWorkbook test = new XSSFWorkbook(); try { string fPath = files[0]; FileStream fs2 = new FileStream(fPath, FileMode.Open, FileAccess.ReadWrite); XSSF
I have this export function that allows me to export 2 grid views into 2 separated worksheets in one excel. But my problems are: How can I have a usual popup window like usual download when I click on export button to prompt user to OPEN, SAVE AS, CANCEL of the download instead of saving it to a specific location (currently what I am doing in my codes)? How can I set a code to enable wrapte
我有这个导出功能,允许我在一个excel中将2个网格视图导出为2个独立的工作表。 但我的问题是: 当我点击导出按钮以提示用户打开,另存为,取消下载而不是将其保存到特定位置(目前我在我的代码中正在执行的操作)时,如何才能像平常下载一样使用常见的弹出窗口? 我如何设置代码以启用所有单元格的wraptext = true,并自动格式化列高和宽以固定所有文本,以便在列宽不变时不显示######作为示例excel打开时太小。 protect