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  • Point[] and Tri not "could not be found"

    - by Craig Dannehl
    Hi I'm trying to learn how to load a .obj file using OpenTK in windows Forms. I have seen a lot of examples out there, but I do see almost everyone uses List, and Point[]. Code example show these highlighted like there IDE know what these are; for example List<Tri> tris = new List<Tri>(); but mine just returns "The type or namespace name 'Tri' could not be found" is there an include I need to add or a using I am missing. Currently have this using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Drawing; using OpenTK; using OpenTK.Graphics; using OpenTK.Graphics.OpenGL;

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  • How is architectural design done in an agile environment?

    - by B?????
    I have read Principles for the Agile Architect, where they defined next principles : Principle #1 The teams that code the system design the system. Principle #2 Build the simplest architecture that can possibly work. Principle #3 When in doubt, code it out. Principle #4 They build it, they test it. Principle #5 The bigger the system, the longer the runway. Principle #6 System architecture is a role collaboration. Principle #7 There is no monopoly on innovation. The paper says that most of the architecture design is done during the coding phase, and only system design before that. That is fine. So, how is the system design done? Using UML? Or a document that defines interfaces and major blocks? Maybe something else?

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  • PLEASE HELP RECOVER MY MINT14 BOOT/GRUB [closed]

    - by C2940680
    Hi I have following from [bootinfoscript][1] v0.61 [1Apr-2012]: I tried to do several time to do a boot-repair from YannUbuntu. However, I get error rebooting into my Linux Mint 14 Cinnamon. I have partitioned /boot, /, /home partitions. Could I still use /home partition if I recover files on to external USB and then reformatting the whole hard drive, repartition and use /home from USB drive which I have saved before? Also, I tried to install Qubes 2beta and then deleted the partition where it was stored. Also, also {my bad} I tried to copy the BOOT.CFG from sda6 to sda1 and sda2. All answers appreciated in advance. sda1: __________________________________________ File system: ext2 Boot sector type: - Boot sector info: Operating System: Boot files: /grub/grub.cfg sda2: __________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sda5: __________________________________________ File system: swap Boot sector type: - Boot sector info: sda6: __________________________________________ File system: ext4 Boot sector type: - Boot sector info: Operating System: Linux Mint 14 Nadia Boot files: /boot/grub/grub.cfg /etc/fstab

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  • /usr/share/apport/apport-gpu-error-intel.py Error

    - by gopherballs
    I was on Ubuntu 12.10 and ran the system updates and after the re-install, the system became unstable and kept prompting me with the message "System Issue" and this as the error per Ubuntu "/usr/share/apport/apport-gpu-error-intel.py". After I tried re-starting, the issue is still appearing and the system ultimately freezes (requiring a hard reset). I tried a clean install of 12.10 and the system works fine until the newest updates are applied...it then returns to the same messages. I then tried a clean install of 12.04 LTS and just like 12.10 it works until the latest updates are applied. On 12.04, I tried to use the previous kernel - going from 3.5.0-26 to 3.5.0-23 and the issue is still there. Currently, I'm sitting on 12.04 LTS clean install without doing the updates and the system is working. Does anyone have an idea how to fix this? Thanks.

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  • How should I determine direction from a phone's orientation & accelerometer?

    - by Manoj Kumar
    I have an Android application which moves a ball based on the orientation of the phone. I've been using the following code to extract the data - but how do I use it to determine what direction the ball should actually travel in? public void onSensorChanged(int sensor, float[] values) { // TODO Auto-generated method stub synchronized (this) { Log.d("HIIIII :- ", "onSensorChanged: " + sensor + ", x: " + values[0] + ", y: " + values[1] + ", z: " + values[2]); if (sensor == SensorManager.SENSOR_ORIENTATION) { System.out.println("Orientation X: " + values[0]); System.out.println("Orientation Y: " + values[1]); System.out.println("Orientation Z: " + values[2]); } if (sensor == SensorManager.SENSOR_ACCELEROMETER) { System.out.println("Accel X: " + values[0]); System.out.println("Accel Y: " + values[1]); System.out.println("Accel Z: " + values[2]); } } }

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  • Windows 7/Ubuntu 12 dual boot deleted for Windows 8 installation. How to make grub rescue go away?

    - by dimious
    I had a Windows 7/Ubuntu 12 dual boot and I decided to clean install Windows 8 over them. The problem is that after I deleted all partitions and installed windows I was getting an "Operation system not found", however after an "enter" the system will normally boot into Windows 8. I realized that Windows did their trick and put the system (not partition anymore?!?) "tag" (Disk Management) on my media hard drive. After trying to fix the boot/mbr to be able to boot from my main drive the "Operation system not found" changed to the "grub rescue" prompt. I know that I cannot use that because I have killed the grub files. Windows can still boot as long as I choose to boot from the media drive. The question is, is there any way to move the "system", whatever it is now, to the main drive and have the PC boot from there, while making grub disappear? And if that is possible after that, can I just make the Media drive inactive or I will have to somehow remove the "system" tag?

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  • IPS Package Groups

    - by Alan_Solaris_RE
    IPS group packages consist solely of dependencies on other packages that make up a logical grouping of software. These are similar to, but not the equivalent of, Solaris 10 metaclusters. The main difference is that metaclusters are nested subsets ranging from a minimal install to nearly all packages on the media. Group packages have no such hierarchy. They can overlap other groups, or be completely disjoint sets. A group dependency is set this way in an IPS package manifest file: depend fmri=full/pkg/name type=group Current Solaris Groups Solaris currently has 4 system groups defined. These are used for different types of installation, and are included in the xml manifest files used by the various Solaris installers: Package Name Summary Description Default Installation For:  group/system/solaris-desktop Oracle Solaris Desktop Provides an Oracle Solaris desktop environment Live Media  group/system/solaris-large-server Oracle Solaris Large Server Provides an Oracle Solaris large server environment Text Installer  group/system/solaris-small-server Oracle Solaris Small Server Provides a useful command-line Oracle Solaris environment  Zones  group/system/solaris-auto-install  Oracle Solaris Automated Installer Client  Provides an Oracle Solaris Automated Installer client  Automated Installer There are also several "feature" groups such as AMP and GNU Developer Tools. These are provided for convenience, but are not used directly by any installers. Retrieving Group Package Information A listing of all current groups can be found with the command: pkg info -r group/* A listing of all the packages in a group can be obtained with: pkg contents -o fmri -H -rt depend -a type=group groupname An example: $ pkg contents -o fmri -H -rt depend -a type=group solaris-desktop archiver/gnu-tar audio/audio-utilities codec/flac codec/libtheora codec/ogg-vorbis codec/speex communication/im/pidgin etc. You can determine which package group is currently installed on your system: $ pkg list group/system/\* Output would look like: NAME (PUBLISHER) VERSION IFO group/system/solaris-desktop 0.5.11-0.175.0.0.0.0.0 i-- Note that there are not version numbers associated with a group package dependency. The package version that best fits the system will be used, based on other dependencies such as what is listed in incorporation files. Installing a Group To Install a group, simple use the group package name as you would any other package: $ pkg install solaris-small-server  If you want to exclude a package from installing, you can use the --reject flag: $ pkg install --reject audio/audio-utilities solaris-desktop Creating Your Own Group To create your own group package, you can follow the pkg(5) documentation on how to create a package, and use this action for each package that is part of your group:   depend fmri=full/pkg/name type=group

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  • why client can not receive message from server (java) [migrated]

    - by user1745931
    I have just started learning java. I modified the client side code for a server/client communication program, by creating two threads for the client side, main thread for receiving user's input, and inputThread for receiving server's response. I am sure that server has sent the response to client, however, no response message is obtain at client. Here is my code. Can anyone help me to figure it out? Thanks package clientnio; import java.net.*; import java.nio.*; import java.io.*; import java.nio.channels.*; import java.util.Scanner; public class ClientNIO { public static int bufferLen = 50; public static SocketChannel client; public static ByteBuffer writeBuffer; public static ByteBuffer readBuffer; public static void main(String[] args) { writeBuffer = ByteBuffer.allocate(bufferLen); readBuffer = ByteBuffer.allocate(bufferLen); try { SocketAddress address = new InetSocketAddress("localhost",5505); System.out.println("Local address: "+ address); client=SocketChannel.open(address); client.configureBlocking(false); //readBuffer.flip(); new inputThread(readBuffer); /* String a="asdasdasdasddffasfas"; writeBuffer.put(a.getBytes()); writeBuffer.clear(); int d=client.write(writeBuffer); writeBuffer.flip(); */ while (true) { InputStream inStream = System.in; Scanner scan = new Scanner(inStream); if (scan.hasNext()==true) { String inputLine = scan.nextLine(); writeBuffer.put(inputLine.getBytes()); //writeBuffer.clear(); System.out.println(writeBuffer.remaining()); client.write(writeBuffer); System.out.println("Sending data: "+new String(writeBuffer.array())); writeBuffer.flip(); Thread.sleep(300); } } } catch(Exception e) { System.out.println(e); } } } class inputThread extends Thread { private ByteBuffer readBuffer; public inputThread(ByteBuffer readBuffer1) { System.out.println("Receiving thread starts."); this.readBuffer = readBuffer1; start(); } @Override public void run() { try { while (true) { readBuffer.flip(); int i=ClientNIO.client.read(readBuffer); if(i>0) { byte[] b=readBuffer.array(); System.out.println("Receiving data: "+new String(b)); //client.close(); //System.out.println("Connection closed."); //break; } Thread.sleep(100); } } catch (Exception e) { System.out.println(e); } } }

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  • How to remove unused usings from class file ?

    - by Samir R. Bhogayta
    When we create a .cs file means code file class is automatically create. That .cs file means class has default usings for namespace. using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls; We don't use all namespaces  in that class so we have to remove unused namespaces from file. We can remove  namespace manually but it takes time and need full knowledge of class library so we can use Visual Studio . Step 1:  Right Click in .cs File. Step 2:  Move on Organize usings. Step 3: Click on Remove Unused Usings. After that we have only those namespaces in the file these are using.  

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  • Writing the tests for FluentPath

    Writing the tests for FluentPath is a challenge. The library is a wrapper around a legacy API (System.IO) that wasnt designed to be easily testable. If it were more testable, the sensible testing methodology would be to tell System.IO to act against a mock file system, which would enable me to verify that my code is doing the expected file system operations without having to manipulate the actual, physical file system: what we are testing here is FluentPath, not System.IO. Unfortunately, that...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How do you get users to rank their software enhancement needs?

    - by Lego Stormtroopr
    I've inherited a legacy software system, and have been tasked with performing usability and system upgrades. While there's nothing bad with the system, from discussions with the users, there are "small" usabilty issues that need to be addressed. At this stage I'm the lone developer on this system, and apart from testing I don't use the system at all, so its difficult for me to know what issues may exist or are percieved to exist. I'm going to have some time to speak with them all and discuss what they percieve to be good/bad or indifferent about the system. Since its essentially just me for the time being my time is limit. So I was considering asking them to imagine that I'd only be able to do one change, have them all write privately what they'd want that one change to be, and then helping them rank those, but I'm hoping for other tips as well. What techniques exist for getting users to explain their wants, needs, and requirements, while also having them rank them by importance or desirability?

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  • Parse JSON in C#

    - by Ender
    I'm trying to parse some JSON data from the Google AJAX Search API. I have this URL and I'd like to break it down so that the results are displayed. I've currently written this code, but I'm pretty lost in regards of what to do next, although there are a number of examples out there with simplified JSON strings. Being new to C# and .NET in general I've struggled to get a genuine text output for my ASP.NET page so I've been recommended to give JSON.NET a try. Could anyone point me in the right direction to just simply writing some code that'll take in JSON from the Google AJAX Search API and print it out to the screen? EDIT: I think I've made some progress in regards to getting some code working using DataContractJsonSerializer. Here is the code I have so far. Any advice on whether this is close to working and/or how I would output my results in a clean format? EDIT 2: I've followed the advice from Dreas Grech and the StackOverflowException has gone. However, now I am getting no output. Any ideas on where to go next? EDIT 3: ALL FIXED! All results are working fine. Thank you again Dreas Grech! using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.ServiceModel.Web; using System.Runtime.Serialization; using System.Runtime.Serialization.Json; using System.IO; using System.Text; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { GoogleSearchResults g1 = new GoogleSearchResults(); const string json = @"{""responseData"": {""results"":[{""GsearchResultClass"":""GwebSearch"",""unescapedUrl"":""http://www.cheese.com/"",""url"":""http://www.cheese.com/"",""visibleUrl"":""www.cheese.com"",""cacheUrl"":""http://www.google.com/search?q\u003dcache:bkg1gwNt8u4J:www.cheese.com"",""title"":""\u003cb\u003eCHEESE\u003c/b\u003e.COM - All about \u003cb\u003echeese\u003c/b\u003e!."",""titleNoFormatting"":""CHEESE.COM - All about cheese!."",""content"":""\u003cb\u003eCheese\u003c/b\u003e - everything you want to know about it. Search \u003cb\u003echeese\u003c/b\u003e by name, by types of milk, by textures and by countries.""},{""GsearchResultClass"":""GwebSearch"",""unescapedUrl"":""http://en.wikipedia.org/wiki/Cheese"",""url"":""http://en.wikipedia.org/wiki/Cheese"",""visibleUrl"":""en.wikipedia.org"",""cacheUrl"":""http://www.google.com/search?q\u003dcache:n9icdgMlCXIJ:en.wikipedia.org"",""title"":""\u003cb\u003eCheese\u003c/b\u003e - Wikipedia, the free encyclopedia"",""titleNoFormatting"":""Cheese - Wikipedia, the free encyclopedia"",""content"":""\u003cb\u003eCheese\u003c/b\u003e is a food consisting of proteins and fat from milk, usually the milk of cows, buffalo, goats, or sheep. It is produced by coagulation of the milk \u003cb\u003e...\u003c/b\u003e""},{""GsearchResultClass"":""GwebSearch"",""unescapedUrl"":""http://www.ilovecheese.com/"",""url"":""http://www.ilovecheese.com/"",""visibleUrl"":""www.ilovecheese.com"",""cacheUrl"":""http://www.google.com/search?q\u003dcache:GBhRR8ytMhQJ:www.ilovecheese.com"",""title"":""I Love \u003cb\u003eCheese\u003c/b\u003e!, Homepage"",""titleNoFormatting"":""I Love Cheese!, Homepage"",""content"":""The American Dairy Association\u0026#39;s official site includes recipes and information on nutrition and storage of \u003cb\u003echeese\u003c/b\u003e.""},{""GsearchResultClass"":""GwebSearch"",""unescapedUrl"":""http://www.gnome.org/projects/cheese/"",""url"":""http://www.g

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  • using System.Net.Mail To send smtp mail via google gets me a time out exception.

    - by Anicho
    Hey guys, I guess I got another asp.net question I am trying to send email using smtp authentication through google but I am constantly getting a timed out error and no idea what it might be from the following code its not my firewall or my isp blocking smtp ports so its most probably the code: MailMessage msg = new MailMessage(); String BodyMsg; BodyMsg = "Hey " + TxtBoxUsername.Text + "@" + "Welcome to Tiamo your username and password are:@Username: " + TxtBoxUsername.Text + "@Password: " + PasswordString + "@You have succesffully registered, you can now login." + "@Thank You@Tiamo Team"; BodyMsg = BodyMsg.Replace("@", System.Environment.NewLine); msg.To.Add(new MailAddress(TxtBoxEmail.Text)); msg.From = new MailAddress("[email protected]"); msg.Subject = "Re: Welcome to Tiamo"; msg.Body = BodyMsg; SmtpClient client = new SmtpClient() ; client.EnableSsl = true; client.Send(msg); and this is my web.config email smtp settings: <system.net> <mailSettings> <smtp from="[email protected]"> <network host="smtp.gmail.com" port="465" userName="[email protected]" password="MyLovelyPassword" defaultCredentials="true"/> </smtp> </mailSettings> Im completely exhausted so I thought the best thing is to pop up a question, hope you can help it will all be much appreciated... thanks anicho.

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  • Access Violation Exception when trying to perform WTSVirtualChannelRead

    - by Scott Chamberlain
    I am trying to write a hello world type program for using virtual channels in the windows terminal services client. public partial class Form1 : Form { public Form1() { InitializeComponent(); } IntPtr mHandle = IntPtr.Zero; private void Form1_Load(object sender, EventArgs e) { mHandle = NativeMethods.WTSVirtualChannelOpen(IntPtr.Zero, -1, "TSCRED"); } private void button1_Click(object sender, EventArgs e) { int bufferSize = 1024; byte[] buffer = new byte[bufferSize]; int bytesRead = 0; NativeMethods.WTSVirtualChannelRead(mHandle, 0, buffer, bufferSize, ref bytesRead); if (bytesRead != 0) { MessageBox.Show("Got no Data"); } else { MessageBox.Show("Got data: " + bytesRead); } } protected override void Dispose(bool disposing) { if (mHandle != System.IntPtr.Zero) { NativeMethods.WTSVirtualChannelClose(mHandle); } base.Dispose(disposing); } } internal static class NativeMethods { [DllImport("Wtsapi32.dll")] public static extern IntPtr WTSVirtualChannelOpen(IntPtr server, int sessionId, [MarshalAs(UnmanagedType.LPStr)] string virtualName); [DllImport("Wtsapi32.dll", SetLastError = true)] public static extern bool WTSVirtualChannelRead(IntPtr channelHandle, long timeout, byte[] buffer, int length, ref int bytesReaded); [DllImport("Wtsapi32.dll")] public static extern bool WTSVirtualChannelClose(IntPtr channelHandle); } On NativeMethods.WTSVirtualChannelRead(mHandle, 0, buffer, bufferSize, ref bytesRead); I get the following error every time. System.AccessViolationException was unhandled by user code Message=Attempted to read or write protected memory. This is often an indication that other memory is corrupt. Source=RemoteForm StackTrace: at RemoteForm.NativeMethods.WTSVirtualChannelRead(IntPtr channelHandle, Int64 timeout, Byte[] buffer, Int32 length, Int32& bytesReaded) at RemoteForm.Form1.button1_Click(Object sender, EventArgs e) in E:\Visual Studio 2010\Projects\RemoteForm\Form1.cs:line 31 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) InnerException: I am sending the data from the MSTSC COM object and ActiveX controll. public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { rdp.Server = "schamberlainvm"; rdp.UserName = "TestAcct"; IMsTscNonScriptable secured = (IMsTscNonScriptable)rdp.GetOcx(); secured.ClearTextPassword = "asdf"; rdp.CreateVirtualChannels("TSCRED"); rdp.Connect(); } private void button1_Click(object sender, EventArgs e) { rdp.SendOnVirtualChannel("TSCRED", "This is a test"); } } //Designer code // // rdp // this.rdp.Enabled = true; this.rdp.Location = new System.Drawing.Point(12, 12); this.rdp.Name = "rdp"; this.rdp.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("rdp.OcxState"))); this.rdp.Size = new System.Drawing.Size(1092, 580); this.rdp.TabIndex = 0; Any help on this would be greatly appreciated.

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  • Request for the permission of type 'System.Data.Odbc.OdbcPermission.. help needed

    - by Matt
    I'm getting the following error when trying to connect to a remote mysql server. Request for the permission of type 'System.Data.Odbc.OdbcPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. I've installed the odbc 5.1 driver, and can connect to the database using the Data Sources (ODBC) tool in Control Panel. However when I try and run my C# scrip to connect, I get the above error. I've read its something to do with trust levels or something? I don't quite understand what people were talking about though. I went to C:... Framework/v2.0.50727/CONFIG and added to the medium and high trust.config files, but that didn't help.. Can someone help me out here please? My connection string is MyConString = "DRIVER={MySQL ODBC 5.1 Driver};" + "SERVER=" + m_strHost + ";" + "PORT=3306;" + "DATABASE=" + m_strDatabase + ";" + "UID=" + m_strUserName + ";" + "PWD=" + m_strPassword + ";" + "OPTION=3;";

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  • How to set up a user Quartz2D coordinate system with scaling that avoids fuzzy drawing?

    - by jdmuys
    This topic has been scratched once or twice, but I am still puzzled. And Google was not friendly either. Since Quartz allows for arbitrary coordinate systems using affine transform, I want to be able to draw things such as floorplans using real-life coordinate, e.g. feet. So basically, for the sake of an example, I want to scale the view so that when I draw a 10x10 rectangle (think a 1-inch box for example), I get a 60x60 pixels rectangle. It works, except the rectangle I get is quite fuzzy. Another question here got an answer that explains why. However, I'm not sure I understood that reason why, and moreover, I don't know how to fix it. Here is my code: I set my coordinate system in my awakeFromNib custom view method: - (void) awakeFromNib { CGAffineTransform scale = CGAffineTransformMakeScale(6.0, 6.0); self.transform = scale; } And here is my draw routine: - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGRect r = CGRectMake(10., 10., 11., 11.); CGFloat lineWidth = 1.0; CGContextStrokeRectWithWidth(context, r, lineWidth); } The square I get is scaled just fine, but totally fuzzy. Playing with lineWidth doesn't help: when lineWidth is set smaller, it gets lighter, but not crisper. So is there a way to set up a view to have a scaled coordinate system, so that I can use my domain coordinates? Or should I go back and implementing scaling in my drawing routines? Note that this issue doesn't occur for translation or rotation. Thanks

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  • Alternatives to HtmlTextWriter in a System.Web.UI.Control?

    - by Marco Bettiolo
    Hi, Can you use FluentHTML or other alternatives in an web application user control? Can you put a markup file in a System.Web.UI.Control like the System.Web.UI.UserControl but without the burden of the Page object? I would like to reduce the number of lines of the following code: writer.Write(SacrificalMarkupPage.GenerateControlMarkup(new DialogConfirm())); writer.AddAttribute("class", string.Format("ajaxResponse {0}", action)); writer.RenderBeginTag("div"); writer.RenderBeginTag("h4"); writer.WriteEncodedText("Delete selected item?"); writer.RenderEndTag(); //h4 var queryString = new HttpQueryString { {"confirmed", "true"}, {"src", urlReferer.PathAndQuery} }; writer.AddAttribute("href", queryString.MakeQueryString(url).PathAndQuery); writer.AddAttribute("class", "delete"); writer.RenderBeginTag("a"); writer.WriteEncodedText("Yes"); writer.RenderEndTag(); //a.delete writer.WriteEncodedText(" | "); writer.AddAttribute("href", urlReferer.PathAndQuery); writer.AddAttribute("class", "back"); writer.RenderBeginTag("a"); writer.WriteEncodedText("No"); writer.RenderEndTag(); //a.back writer.RenderEndTag(); //div.ajaxResponse.ACTION Thanks

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  • How do you efficiently implement a document similarity search system?

    - by Björn Lindqvist
    How do you implement a "similar items" system for items described by a set of tags? In my database, I have three tables, Article, ArticleTag and Tag. Each Article is related to a number of Tags via a many-to-many relationship. For each Article i want to find the five most similar articles to implement a "if you like this article you will like these too" system. I am familiar with Cosine similarity and using that algorithm works very well. But it is way to slow. For each article, I need to iterate over all articles, calculate the cosine similarity for the article pair and then select the five articles with the highest similarity rating. With 200k articles and 30k tags, it takes me half a minute to calculate the similar articles for a single article. So I need another algorithm that produces roughly as good results as cosine similarity but that can be run in realtime and which does not require me to iterate over the whole document corpus each time. Maybe someone can suggest an off-the-shelf solution for this? Most of the search engines I looked at does not enable document similarity searching.

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  • C# - Alternative to System.Time.Timer, to call a function at a specific time.

    - by Fábio Antunes
    Hello everybody. I want to call a specific function on my C# application at a specific time. At first i thought about using a Timer (System.Time.Timer), but that soon became impossible to use. Why? Simple. The Timer Class requires a Interval in milliseconds, but considering that i might want the function to be executed, lets says in a week that would mean: 7 Days = 168 hours; 168 Hours = 10,080 minutes; 10,080 Minutes = 6,048,000 seconds; 6,048,000 Seconds = 6,048,000,000 milliseconds; So the Interval would be 6,048,000,000; Now lets remember that the Interval accepted data type is int, and as we know int range goes from -2,147,483,648 to 2,147,483,647. That makes Timer useless in this case once we cannot set a Interval bigger that 2,147,483,647 milliseconds. So i need a solution where i could specify when the function should be called. Something like this: solution.ExecuteAt = "30-04-2010 15:10:00"; solution.Function = "functionName"; solution.Start(); So when the System Time would reach "30-04-2010 15:10:00" the function would be executed in the application. How can this problem be solved? Thanks just by taking the time to read my question. But if you could provide me with some help i would be most grateful. Additional Info: What these functions will do? Getting climate information and based on that info: Starting / Shutting down other Applications (most of them Console Based); Sending custom Commands to those Console Applications; Power down, Rebooting, Sleep, Hibernate the computer; And if possible schedule the BIOS to Power Up the Computer;

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  • How to force ADO.Net to use only the System.String DataType in the readers TableSchema.

    - by Keith Sirmons
    Howdy, I am using an OleDbConnection to query an Excel 2007 Spreadsheet. I want force the OleDbDataReader to use only string as the column datatype. The system is looking at the first 8 rows of data and inferring the data type to be Double. The problem is that on row 9 I have a string in that column and the OleDbDataReader is returning a Null value since it could not be cast to a Double. I have used these connection strings: Provider=Microsoft.ACE.OLEDB.12.0;Data Source="ExcelFile.xlsx";Persist Security Info=False;Extended Properties="Excel 12.0;IMEX=1;HDR=No" Provider=Microsoft.Jet.OLEDB.4.0;Data Source="ExcelFile.xlsx";Persist Security Info=False;Extended Properties="Excel 8.0;HDR=No;IMEX=1" Looking at the reader.GetSchemaTable().Rows[7].ItemArray[5], it's dataType is Double. Row 7 in this schema correlates with the specific column in Excel I am having issues with. ItemArray[5] is its DataType column Is it possible to create a custom TableSchema for the reader so when accessing the ExcelFiles, I can treat all cells as text instead of letting the system attempt to infer the datatype? I found some good info at this page: Tips for reading Excel spreadsheets using ADO.NET The main quirk about the ADO.NET interface is how datatypes are handled. (You'll notice I've been carefully avoiding the question of which datatypes are returned when reading the spreadsheet.) Are you ready for this? ADO.NET scans the first 8 rows of data, and based on that guesses the datatype for each column. Then it attempts to coerce all data from that column to that datatype, returning NULL whenever the coercion fails! Thank you, Keith Here is a reduced version of my code: using (OleDbConnection connection = new OleDbConnection(BuildConnectionString(dataMapper).ToString())) { connection.Open(); using (OleDbCommand cmd = new OleDbCommand()) { cmd.Connection = connection; cmd.CommandText = SELECT * from [Sheet1$]; using (OleDbDataReader reader = cmd.ExecuteReader()) { using (DataTable dataTable = new DataTable("TestTable")) { dataTable.Load(reader); base.SourceDataSet.Tables.Add(dataTable); } } } }

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  • How to mmap the stack for the clone() system call on linux?

    - by Joseph Garvin
    The clone() system call on Linux takes a parameter pointing to the stack for the new created thread to use. The obvious way to do this is to simply malloc some space and pass that, but then you have to be sure you've malloc'd as much stack space as that thread will ever use (hard to predict). I remembered that when using pthreads I didn't have to do this, so I was curious what it did instead. I came across this site which explains, "The best solution, used by the Linux pthreads implementation, is to use mmap to allocate memory, with flags specifying a region of memory which is allocated as it is used. This way, memory is allocated for the stack as it is needed, and a segmentation violation will occur if the system is unable to allocate additional memory." The only context I've ever heard mmap used in is for mapping files into memory, and indeed reading the mmap man page it takes a file descriptor. How can this be used for allocating a stack of dynamic length to give to clone()? Is that site just crazy? ;) In either case, doesn't the kernel need to know how to find a free bunch of memory for a new stack anyway, since that's something it has to do all the time as the user launches new processes? Why does a stack pointer even need to be specified in the first place if the kernel can already figure this out?

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  • Looking for Recommendations on Version Control System with Intuitive (.NET) API?

    - by John L.
    I'm working on a project which generates (composite) Microsoft Word documents which are comprised of one or more child documents. There are tens of thousands of permutations of the composite documents. Far too many for users to easily manage. Users will need to view/edit the child documents through the app which hides all of the nasty implementation details. A requirement of the system is that the child documents must be version controlled. That is what has been tripping me up. I've been torn between using an off-the-shelf solution or rolling my own. At a minimum, the system needs to support get latest, get specific version, add new, rename and possibly delete. I’ve whiteboarded it enough to realize it won’t be a trivial task to create my own. As far as commercial systems I have VSS and TFS at my disposal. I've played with the TFS API some, but it isn’t as intuitive or well documented as I had hoped. I'm not averse to an open source solution (e.g. SVN), but I have less familiarity with them. Which approach or tool would you recommend? Why? Do you have any links to API documentation you would recommend? Environment: C#, VS2008, SQL Server 2005/2008, low volume (a few hundred operations per day)

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  • Why is OpenSubKey() returning null on my Win 7 64 bit system?

    - by BrMcMullin
    Has anyone seen OpenSubKey() and other Microsoft.Win32 registry functions return null on 64 bit systems when 32 bit registry keys are under Wow6432node in the registry? I'm working on a unit testing framework that makes a call to OpenSubKey() from the .net library. My dev system is a Win 7 64 bit environment with VS 2008 SP1 and the Win 7 SDK installed. The application we're unit testing is a 32 bit application, so the registry is virtualized under HKLM\Software\Wow6432node. When we call: Registry.LocalMachine.OpenSubKey( @"Software\MyCompany\MyApp\" ); Null is returned, however explicitly stating to look here works: Registry.LocalMachine.OpenSubKey( @"Software\Wow6432node\MyCompany\MyApp\" ); From what I understand this function should be agnostic to 32 bit or 64 bit environments and should know to jump to the virtual node. Even stranger is the fact that the exact same call inside a compiled and installed version of our application is running just fine on the same system and is getting the registry keys necessary to run; which are also being placed in HKLM\Software\Wow6432node. Any suggestions? Thanks in advance!

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  • Unable to change the system zone setting on Windows Server 2008 R2.

    - by Ganesh
    Hi All, I have an MFC application that tries to change the system zone setting on the Windows Server 2008 R2. I am using the SetTimeZoneInformation() API which fails with the error code 1314 .i.e. “A required privilege is not held by the client.”. Please refer the sample code below: TIME_ZONE_INFORMATION l_TimeZoneInfo; DWORD l_dwRetVal = 0; ZeroMemory(&l_TimeZoneInfo, sizeof(TIME_ZONE_INFORMATION)); l_TimeZoneInfo.Bias = -330; l_TimeZoneInfo.StandardBias = 0; l_TimeZoneInfo.StandardDate.wDay = 0; l_TimeZoneInfo.StandardDate.wDayOfWeek = 0; l_TimeZoneInfo.StandardDate.wHour = 0; l_TimeZoneInfo.StandardDate.wMilliseconds = 0; l_TimeZoneInfo.StandardDate.wMinute = 0; l_TimeZoneInfo.StandardDate.wMonth = 0; l_TimeZoneInfo.StandardDate.wSecond = 0; l_TimeZoneInfo.StandardDate.wYear = 0; CString l_csDaylightName = _T("India Daylight Time"); CString l_csStdName = _T("India Standard Time"); wcscpy(l_TimeZoneInfo.DaylightName,l_csDaylightName.GetBuffer(l_csDaylightName.GetLength())); wcscpy(l_TimeZoneInfo.StandardName,l_csStdName.GetBuffer(l_csStdName.GetLength())); ::SetLastError(0); if(0 == ::SetTimeZoneInformation(&l_TimeZoneInfo)) { l_dwRetVal = ::GetLastError(); CString l_csErr = _T(""); l_csErr.Format(_T("%d"),l_dwRetVal); } The MFC application has been developed using Visual Studio 2008 and is UAC aware i.e. the application has UAC enabled in its manifest file with the UAC execution level set to “HighestAvailable”. I have administrator privileges and when I run the application it still fails to change the system zone setting. Thanks in Advance, Ganesh

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