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• Is it a Good Practice to Write HTML Using a StringBuilder in my ASP.NET Codebehind?

  - by d3020

  I'm interested to hear from other developers their opinion on an approach that I typically take. I have a web application, asp.net 2.0, c#. What I usually do to write out drop downs, tables, input controls, etc. is in the code behind use StringBuilder and write out something like sb.Append(" I don't find myself using to many .net controls as I typically write out the html in the code behind. When I want to use jQuery or call JavaScript I just put that function call in my sb.Append tag like sb.Append("td...onblur='fnCallJS()'. I've gotten pretty comfortable with this approach. For data access I use EntitySpaces. I'm just kind of curious if this sort of approach is horribly wrong, ok depending on the context, good, time to learn 3.0, etc. I'm interested in learning and was just looking for some input.

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• How to write mmap input memory to O_DIRECT output file?

  - by Friedrich

  why doesn't following pseudo-code work (O_DIRECT results in EFAULT) in_fd = open("/dev/mem"); in_mmap = mmap(in_fd); out_fd = open("/tmp/file", O_DIRECT); write(out_fd, in_mmap, PAGE_SIZE); while following does (no O_DIRECT) in_fd = open("/dev/mem"); in_mmap = mmap(in_fd); out_fd = open("/tmp/file"); write(out_fd, in_mmap, PAGE_SIZE); I guess it's something with virtual kernel pages to virtual user pages, which cannot be translated in the write call? Best regards, Friedrich

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• What's the best way to read/write array contents from/to binary files in C#?

  - by Eric

  I would like to read and write the contents of large ( 2GB), raw volume files (e.g. MRI scans). These files are just a sequence of e.g. 32 x 32 x 32 floats so they map well to 1D arrays. I would like to be able to read the contents of the binary volume files into 1D arrays of e.g. float or ushort (depending on the data type of the binary files) and similarly export the arrays back out to the raw volume files. What's the best way to do this with C#? Read/Write them 1 element at a time with BinaryReader/BinaryWriter? Read them piece-wise into byte arrays with FileStream.Read and then do a System.Buffer.BlockCopy between arrays (keeping in mind that I want 2GB arrays)? Write my own Reader/Writer?

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• How has test first development changed the way you write software?

  - by Toran Billups

  I've started to find that I can't write software without writing a test first. I ask this subjective question because I want to hear what others in the community think about the reasons I can't go back to writing production code without a test first. If you can't write a test for something you don't understand it Without a regression test you can't clean the code You are going to test it anyway, spend the time to do it right Evolutionary design is possible without fear You actually write less code yourself Fast feedback cycles save time and money Job security (less bugs makes your boss happy) It actually makes my work more enjoyable

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• How do you write multiple lists from Matlab to the same excel file?

  - by Ben Fossen

  I have several lists in Matlab that I want to write to the same excel file. I have one list xordered and another list aspl. I do not know the length of the lists till after I run the Matlab program. I used data = xlswrite('edgar.xls',fliplr(sortedx'),'A2:A3000') for the first list but when I tried to write another list to the same file like this I ended up with two different excel files named edgar.xls asp_data = xlswrite('edagr.xls', fliplr(aspl'), 'B2:B3000') Is there a way I can write both of these lists into the same excel file? xordered in the A column and aspl in the B column?

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• Is it easier to write filesystem drivers in userspace than in kernel space?

  - by Jack

  I will use the Linux NTFS driver as an example. The Linux kernel NTFS driver only has very limited write support in the kernel, and after 5 years it is still considered experimental. The same development team creates the ntfsmount userspace driver, which has almost perfect write support. Likewise, the NTFS-3G project which is written by a different team also has almost perfect write support. Why has the kernel drive taken so much longer? Is it much harder to develop for? Saying that there already exists a decent userspace application is not a reason why the kernel driver is not compelte. NOTE: Do not migrate this to superuser.com. I want a programing heavy answer, from a programming perspective, not a practical use answer. If the question is not appropriate for SO, please advise me as to why so I can edit it so it is.

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• How to check whether a excel file is write protected or not in C#?

  - by Pavan Navali

  Hi, I'm developing a sample application in which I have to open an excel file and check whether the file is write protercteed or not. The code is using System.Windows.Forms; using Microsoft.Office.Core; private void button1_Click(object sender, EventArgs e) { string fileNameAndPath = @"D:\Sample\Sample1.xls"; // the above excel file is a write protected. Microsoft.Office.Interop.Excel.Application a = new Microsoft.Office.Interop.Excel.Application(); if (System.IO.File.Exists(fileNameAndPath)) { Microsoft.Office.Interop.Excel.ApplicationClass app = new Microsoft.Office.Interop.Excel.ApplicationClass(); // create the workbook object by opening the excel file. app.Workbooks.Open(fileNameAndPath,0,false,5,"","",true,Microsoft.Office.Interop.Excel.XlPlatform.xlWindows,"\t",false, true, 0,false,true,0); Microsoft.Office.Interop.Excel._Workbook w = app.Workbooks.Application.ActiveWorkbook; if (w.ReadOnly) MessageBox.Show("HI"); // the above condition is true. } } I would like know whether the file is write protected or not.

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• Where are the best locations to write an error log in Windows?

  - by Keith Sirmons

  Where would you write an error log file, say ErrorLog.txt, in Windows? Keep in mind the path would need to be open to basic users for file write permissions. I know the eventlog is a possible location for writing errors, but does it work for "user" level permissions? EDIT: I am targeting Windows 2003, but I was posing the question in such a way as to have a "General Guideline" for where to write error logs. As for the EventLog, I have had issues before in an ASP.NET application where I wanted to log to the Windows event log, but I had security issues causing me heartache. (I do not recall the issues I had, but remember having them.)

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• how to write a text file after the previous line in c#??

  - by riad

  Dear all, My below code create a txt file and write something to that file.but i need to write new line after the previous lines when i run the script several times. code: string filePath = "D:\\DOT_NET\\C#\\abc.txt"; FileInfo t = new FileInfo(filePath); StreamWriter Tex = t.CreateText(); Tex.WriteLine("Hi freinds"); Tex.WriteLine("csharpfriends is the new url for c-sharp"); Tex.Write(Tex.NewLine); Tex.Close(); current output on the abc.txt file: Hi friends csharpfriends is the new url for c-sharp but i need the output if i run the script several times. Hi friends csharpfriends is the new url for c-sharp Hi friends csharpfriends is the new url for c-sharp Hi friends csharpfriends is the new url for c-sharp How can i do that? Pls help thanks Riad

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• How to write function where argument is type but not typed value?

  - by ssp

  I want to convert a string representations of few dozen enum types to enum values. It's easy to convert string to concrete type: Enum.Parse(typeof<FontStyle>,"Bold") |> unbox<FontStyle> but for now i want to write function where type and string are parameters. The best one i can write is: > let s2e (_: 'a) s = Enum.Parse(typeof<'a>,s) |> unbox<'a>;; val s2e : 'a -> string -> 'a > s2e FontStyle.Regular "Bold";; val it : FontStyle = Bold Is there any option to write something like this but with type itself as first argument?

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• is it good to write multiple time(separate) <script type="text/javascript"> on one php page?

  - by I Like PHP

  i m using many tiny java script code at one php page, i always write java script code in below style <script type="text/javascript"> // <![CDATA[ ----code 1--------- // ]]> </script> <script type="text/javascript"> // <![CDATA[ ----code 2----- // ]]> </script> <script type="text/javascript"> // <![CDATA[ $(document).ready.(function(){ }); // ]]> </script> i want to know that is it good practice to write separate <script type="text/javascript"></script> on same page or we have to write all java script code under one time declaration

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• Will the program installed in a folder function properly if I remove the write permission in linux? [on hold]

  - by Kevin Powell

  I have a user account on a cluster( a server), and can only install program like python on the home folder. In case I might accidentally delete the bin, lib, share,include folders coming with the installation of python on the home folder. I change the permissions of the above folder like this chmod -w folder but I am worried when the program need to write/delete some files of the folders, it might not function because the removal of write permission. Am I right? or I the run, including write files in the folder, of a program have permissions different than the permission of user. BTW, is there a way to hide the folders without changing the names?

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• The mouse pointer in my Ubuntu VM has turned into a little hand with a document, and clicks are igno

  - by Daryl Spitzer

  The mouse pointer in my Ubuntu 8.04.3 LTS VM (running in VMware Fusion) has changed into a little hand holding a document. It doesn't show up in screen-shots. All mouse clicks (left or right) are ignored. But I can still type in the one Terminal window I have open. (And commands work fine.) I wonder if I'm in some kind of drag-and-drop mode. How do I get out of this? Update: Rebooting (from the command-line) worked. Ubuntu came up with the regular mouse-pointer.

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• How to edit and enlarge the font in a PDF document? [closed]

  - by Gus

  Possible Duplicate: How to enlarge a PDF document on Kindle? I have a kindle 6". The problem is that I often read pdf files that are technical, therefore, it doesn't get converted very well to Kindle's native format (for example, code blocks get messed, and things like that). When I watch the pdf page, it's very small to read easily, so I have to rotate the screen to a horizontal position in order to see it better, but my page get divided. But some documents would be easy to read in vertical position if I had the chance to enlarge the font size a little bit in a external pdf editor, therefore enabling the reading in the vertical orientation. Is there a way to change the font size in a pdf file?

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• OWA (Outlook Web Access) won't give user a link to attached document. Gives "Open as Web Page"

  - by Jerry Mayers

  I have been testing OWA and have found that when there is an attached file on a message it shows the "Attachments:" then the file name (but no link) and then [Open as Web Page] link. The user has to click on that which opens a new window and previews the document, then the user gets "You are currently viewing:" followed by the file name. This time the file name is a link that they can open/download. This happens for Office documents and PDF file at least. How do I make it so users can get a direct link to the file on the original message window?

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• NGINX 301 and 302 serving small nginx document body. Any way to remove this behaviour?

  - by anonymous-one

  We have noticed that when using nginx internal 301 and 302 handling, nginx will serve a small document body with the appropriate Location: ... header. Something along the lines of (in html): 301 redirect - nginx. As appropriate in the above behaviour, a content-type text/html and content-length header is also sent. We do a lot of 302 and some 301 redirects, the above behaviour is wasted bandwidth in our opinion. Any way to disable this behaviour? One idea that crossed our mind was to set error_page 301 302 to an empty text file. We have not tested this yet, but I am assuming even with the above, the content-type and content-length (0) headers will be sent. So, is there a clean way to send a "body-less" 301/302 redirect with nginx?

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• Unable to copy and paste (or cut and paste) photos already reduced in size from Word document into a

  - by Simon Child

  Hello I cannot copy photos and paste them from a word document into the text of an email on my Sony Laptop having already substantially redcued the size of the photos using Microsoft Office Picture Manager. I can readily manage to perform this functjon from my work place PC but am presently working mostly from home. I am trying to email photos and text using a btinternet.com email address but have checked that I cannot perform the task using my alternate googlemail email address either. I can obviously highlight the relevant photographs but whenever I try to copy or cut them into the email text the paste function is disabled. Assistance would be much appreciated. Kind regards Simon

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• How to echo current document.title with Firefox Vimperator -> autocmd?

  - by shox

  When I try to do this :autocmd LocationChange .* echo document.title the first page that gets displayed makes no echo. If I proceed to the next tab, the title of the last tab gets echoed. Does anybody know how I can get for every landing on the page the title echoed instantly instead of when "leaving" the tab? And it only works every two times. If I go through my tabs 1,2,3,4,5,6,7,8 (next tab) the output will be (being at 1 currently) _blank Title of 1 _ Title of 3 _ Title of 5 _ Title of 7 _ (now being at tab 8) But I want Title of 1 Title of 2 ... Any ideas?

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• Can a S3 mount be used as the document root for Apache?

  - by Hesse

  Has anyone been successful in having their DocumentRoot reside on an S3 mount (using s3fs)? I currently have a mounted bucket at /mnt/s3. I can read and write files to it no problem. In my httpd.conf I have DocumentRoot "/mnt/s3". When I restart Apache I get the error "DocumentRoot must be a directory". Has anyone tried something similar. My goal is to have a shared storage space so my nodes can scale easily and access the same document root. Thanks

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• How do I get a PDF link in a Word document to open in the default browser?

  - by Tweek

  I'm trying to create a Word document with links to resources on the web. If I create a hyperlink to a regular HTML file, when I click on the link, it opens in my default browser (Google Chrome) as expected. However, if I click on a link to a PDF file on a website, it opens in Internet Explorer. Before it opens, I also get the following prompt: Microsoft Office Opening http://www.example.com/example.pdf Some files can contain viruses or otherwise be harmful to your computer. It is important to be certain that this file is from a trustworthy source. Would you like to open this file? OK Cancel I'm using Office 2010, but I'm asking for a user who is using Office 2007 and is experiencing the same issue. (His default browser is Firefox.) We're both on Windows 7.

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• How to rewrite index.php (and other valid default files) to the document root using mod_rewrite?

  - by TMG

  Hello, I would like to redirect index.php, as well as any other valid default file (e.g. index.html, index.asp, etc.) to the document root (which contains index.php) with something like this: RewriteRule ^index\.(php|htm|html|asp|cfm|shtml|shtm)/?$ / [NC,L] However, this is of course giving me an infinite redirect loop. What's the right way to do this? If possible, I'd like to have this work in both the development and production environment, so I don't want to specify an explicit url like http://www.mysite.com/ as the target. Thanks!

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• How to restrict access to the files outside document root in apache?

  - by Bakhtiyor

  I have virtual hosts in /var/www/site1 and /var/www/site2 folders. I want to restrict access to the files outside document root in apache virtual host, i.e. site1 could not access files of site2. Right now this scripts in /var/www/site1 works fine, which is not good: $filename = "/var/www/site2/somefile"; $handle = fopen($filename, "r"); $contents = fread($handle, filesize($filename)); echo $contents; How to solve this problem please? Thank you very much!

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• problem with filtering the dropdownlist in scroll window

  - by Rahul

  Hi all, Problem with filtering Dropdown list. The scenario is : in scroll window there are two fields Document types and type id: Document type is Dropdown list: As per document type selection type id look should display the values. For ex. If I select quote type from document type and if I open type id look up it should display only quotation in the look window. It should work for all the values of document type drop down list values. Its working fine. The item in the document types are: Quote, Order, Invoice, Return, BackOrder. The problem is after saving the data when I am displaying the same record in scroll window, suppose after displaying document type is QUOTE and document id is QTOARD, and in this position I am changing the document type from dropdown QUOTE to ORDER at this time warning message should c ome this range entered is in valid. Because in database table there is no document QTOARD for ORDER type. The same should work for all the condition. The table name is SOP_ID_Setp and key is SOP Type and DocumentID. For that I have written the Stored procedure : create procedure DocTypeFilter @DocumentType as int, @DocumentID as varchar(30) as --declare --@documentype int, --@documentID varchar(30), select * from sop40200 where soptype=@DocumentType and docid=@DocumentID and I have called this SP in Dropdownlist change event. local long retcode; range clear table SOP_ID_SETP; clear field 'SOP Type' of table SOP_ID_SETP; clear field 'Document ID' of table SOP_ID_SETP; range start table SOP_ID_SETP; fill field 'SOP Type' of table SOP_ID_SETP; fill field 'Document ID' of table SOP_ID_SETP; range end table SOP_ID_SETP; if err()=OKAY then call DocTypeFilter,retcode,'Document Type' of window 'Is_Document Type Site_Scroll','Document ID' of window 'Is_Document Type Site_Scroll'; else warning "The range entered is invalid"; clear window 'Is_Document Type Site_Scroll'; fill window 'Is_Document Type Site_Scroll' table is_sop_site_line_temp; end if; Above code not giving the expected output any help pls.

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• Saving a reference to a int.

  - by Scott Chamberlain

  Here is a much simplified version of what I am trying to do static void Main(string[] args) { int test = 0; int test2 = 0; Test A = new Test(ref test); Test B = new Test(ref test); Test C = new Test(ref test2); A.write(); //Writes 1 should write 1 B.write(); //Writes 1 should write 2 C.write(); //Writes 1 should write 1 Console.ReadLine(); } class Test { int _a; public Test(ref int a) { _a = a; //I loose the reference here } public void write() { var b = System.Threading.Interlocked.Increment(ref _a); Console.WriteLine(b); } } In my real code I have a int that will be incremented by many threads however where the threads a called it will not be easy to pass it the parameter that points it at the int(In the real code this is happening inside a IEnumerator). So a requirement is the reference must be made in the constructor. Also not all threads will be pointing at the same single base int so I can not use a global static int either. I know I can just box the int inside a class and pass the class around but I wanted to know if that is the correct way of doing something like this? What I think could be the correct way: static void Main(string[] args) { Holder holder = new Holder(0); Holder holder2 = new Holder(0); Test A = new Test(holder); Test B = new Test(holder); Test C = new Test(holder2); A.write(); //Writes 1 should write 1 B.write(); //Writes 2 should write 2 C.write(); //Writes 1 should write 1 Console.ReadLine(); } class Holder { public Holder(int i) { num = i; } public int num; } class Test { Holder _holder; public Test(Holder holder) { _holder = holder; } public void write() { var b = System.Threading.Interlocked.Increment(ref _holder.num); Console.WriteLine(b); } } Is there a better way than this?

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• Garbage Collector not doing its job. Memory Consumption = 1.5GB & OutOFMemory Exception.

  - by imageWorker

  I'm working with images (each of size = 5MB). The following code extract some information from each image that is present in the given directory. I'm getting out of memory exception. The size of the process is around (1.5GB). I don't know why garbage collector is not freeing memory. I even tried adding GC.Collect() as last line of foreach loop. Still I'm getting 'OutOFMemory' using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; using System.IO; using System.Drawing; using System.Drawing.Imaging; namespace TrainSVM { class Program { static void Main(string[] args) { FileStream fs = new FileStream("dg.train",FileMode.OpenOrCreate,FileAccess.Write); StreamWriter sw = new StreamWriter(fs); String[] filePathArr = Directory.GetFiles("E:\\images\\"); foreach (string filePath in filePathArr) { if (filePath.Contains("lmn")) { sw.Write("1 "); Console.Write("1 "); } else { sw.Write("1 "); Console.Write("1 "); } Bitmap originalBMP = new Bitmap(filePath); /***********************/ Bitmap imageBody; ImageBody.ImageBody im = new ImageBody.ImageBody(originalBMP); imageBody = im.GetImageBody(-1); /* white coat */ Bitmap whiteCoatBitmap = Rgb2Hsi.Rgb2Hsi.GetHuePlane(imageBody); float WhiteCoatPixelPercentage = Rgb2Hsi.Rgb2Hsi.GetWhiteCoatPixelPercentage(whiteCoatBitmap); //Console.Write("whiteDone\t"); sw.Write("1:" + WhiteCoatPixelPercentage + " "); Console.Write("1:" + WhiteCoatPixelPercentage + " "); /******************/ Quaternion.Quaternion qtr = new Quaternion.Quaternion(-15); Bitmap yellowCoatBMP = qtr.processImage(imageBody); //yellowCoatBMP.Save("yellowCoat.bmp"); float yellowCoatPixelPercentage = qtr.GetYellowCoatPixelPercentage(yellowCoatBMP); //Console.Write("yellowCoatDone\t"); sw.Write("2:" + yellowCoatPixelPercentage + " "); Console.Write("2:" + yellowCoatPixelPercentage + " "); /**********************/ Bitmap balckPatchBitmap = BlackPatchDetection.BlackPatchDetector.MarkBlackPatches(imageBody); float BlackPatchPixelPercentage = BlackPatchDetection.BlackPatchDetector.BlackPatchPercentage; //Console.Write("balckPatchDone\n"); sw.Write("3:" + BlackPatchPixelPercentage + "\n"); Console.Write("3:" + BlackPatchPixelPercentage + "\n"); balckPatchBitmap.Dispose(); yellowCoatBMP.Dispose(); whiteCoatBitmap.Dispose(); originalBMP.Dispose(); sw.Flush(); } sw.Dispose(); fs.Dispose(); } } }

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