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  • Regarding Visual C# MenuItem: Where does the NullReference come from?

    - by Thomas
    Hi All. I have a problem creating MenuItems for a TreeView dynamically: here is the (simplified)code i'm using. public class CTM : TreeNode, IComparable, IComparable<CTM> { public CTM(CTMProvider provider) { this.provider = provider; this.manager = provider.manager; this.IEEEAddress = provider.IEEEAddress; this.endpoint = provider.state._conn.RemoteEndPoint; this.Text = String.Format("CTM: {0} {0}", IEEEAddress, ((System.Net.IPEndPoint)endpoint).ToString()); try { MenuItem meni = System.EventHandler(this.provider.Disconnect)); this.ContextMenu.MenuItems.Add(meni); } catch { Trace.TraceError("Could not create menu item!"); } } } This code always triggers the catch clause with a NullReferenceException. Any Ideas?

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  • Starting a new process in a asp.net web service

    - by Deumber
    I have the following code: public void BeginConvert(object data) { ConverterData cObject = (ConverterData)data; string argument = string.Format("-i \"{0}\" -b {1} \"{2}\"", cObject.Source, compression, cObject.Destiny); Process converterProcess = new Process(); converterProcess.StartInfo.FileName = ffPath; converterProcess.StartInfo.Arguments = argument; converterProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden; converterProcess.Start(); converterProcess.WaitForExit(); } I use it in a webservice, i start it in a new thread and it return exit code 1 (error, i'm trying to do a video convertion with ffmpeg library), i impersonate ASP.NET to use a local account with permissions to read and write files, when i run it in my machine running or debugging it works but know thta the web service is running in IIS doest'n. Could someone help me?

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  • Formatting Log File Messages

    - by Kumar
    This is about formatting the messages for logging so as to subsequently be able to parse them relatively easily esp. given the extensive logging required in financial apps Typically a line in the log file is of the form TimeStamp: Module/Function: where the log string contains whatever you choose, typically you'd have some key=value paradigm or even johnny5 key {value} etc. A regex search through the log file might easily pick up Module/Function but enforcing and maintaing consistency on the log string itself for every developer on the team is often a pain The logging api's are typically ILog.LogInfo(string text, params object[] args) ILog.LogWarning(string text, params object[] args) ILog.LogError(string text, params object[] args) Looking for opinions on better logging api's to format the log messages where a regex search can be performed for Module/Function = Basket/AddItem TokenA = Value1 and TokenB = Value2 etc. without going over every developer's every logging call

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  • Relative Paths, etc. on an Apache server

    - by Matt H.
    I'm really stuck here. I have 2 issues at once: First, my site is stored (both on local development and on live server), in a subdirectory.. as I'm working on multiple sites. i.e. /Sites/www.mysite.com/(site files here) When I'm referring to files in my web pages, I want to refer to, say, my /images directory without hard-coding every occurrence as /www.mysite.com/images/myfile.jpg Is there a way to simply redefine how the leading "/" gets interpreted by the server? Question two, concerning PHP mod_rewrite I have this set of rewrite rules. The objective is to turn www.mysite.com/faq into www.mysite.com/index.php?page="faq" RewriteEngine On RewriteCond %{REQUEST_URI} !mysite.com RewriteRule (.*) mysite.com/$1 RewriteRule ^([a-zA-Z0-9_-]+)$ /mysite.com/index.php?site=$1 RewriteRule ^([a-zA-Z0-9_-]+)/$ /mysite.com/index.php?site=$1 I don't have a problem when a url gets passed in the 2nd-to-last format (as the example above). However, if the trailing "/" is added: www.mysite.com/faq/, my external script references break: (such as src=js/script.js)...

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  • how to read the txt file from database(byte[] to filestream)

    - by Ranjana
    i have stored the txt file to sql server database . i need to read the txt file line by line to get the content in it. my code : DataTable dtDeleteFolderFile = new DataTable(); dtDeleteFolderFile = objutility.GetData("GetTxtFileonFileName", new object[] { ddlSelectFile.SelectedItem.Text }).Tables[0]; foreach (DataRow dr in dtDeleteFolderFile.Rows) { name = dr["FileName"].ToString(); records = Convert.ToInt32(dr["NoOfRecords"].ToString()); bytes = (Byte[])dr["Data"]; } FileStream readfile = new FileStream(Server.MapPath("txtfiles/" + name), FileMode.Open); StreamReader streamreader = new StreamReader(readfile); string line = ""; line = streamreader.ReadLine(); but here i have used the FileStream to read from the Particular path. but i have saved the txt file in byt format into my Database. how to read the txt file using the byte[] value to get the txt file content, instead of using the Path value.

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  • printing uid of a file on linux system

    - by neo730
    i am learning c programming. I am trying to make my own program similar to ls command but with less options.what i am doing is taking input directory/file name as argument and then gets all directory entry with dirent struct(if it is directory) . After it i use stat() to take all information of the file but here is my problem when i use write() to print these value its fine but when i want to print these with printf() i get warninng : format ‘%ld’ expects type ‘long int’, but argument 2 has type ‘__uid_t’. I don't know what should use at place of %ld and also for other special data types.

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  • How to convert string date to Timestamp in java?

    - by lakshmi
    Hi, I want to convert string Date into Timestamp in java. The following coding i have written.I have declare the date for date1 is: 7-11-11 12:13:14. SimpleDateFormat datetimeFormatter1 = new SimpleDateFormat( "yyyy-MM-dd hh:mm:ss"); Date lFromDate1 = datetimeFormatter1.parse(date1); System.out.println("gpsdate :" + lFromDate1); Timestamp fromTS1 = new Timestamp(lFromDate1.getTime()); I want to convert 7-11-11 12:13:14 this string date into timestamp. Now i got the output is 0007-11-11 00:13:14.000000 +05:30:00 but i want ( 7-11-11 12:13:14) this format Timestamp date. Can anyone please help me. Thank you.

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  • Arduino not able to send serial data back

    - by Casper Marcussen
    Hello everyone So i found out how to connect the arduino to my java program. But using the seriel connections dosent give any useful data back, its either in the wrong format, or just sends it as a box. I've looked at the related questions posted early in here, but none of the tips seems to help. So does anyone know how to send the data between an arduino and a computer using the serieal port? P.S I've used the sample code from the arduino.cc homepage to connect to the serial port.

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  • In MSSQL, how do I create a reference variable to a table?

    - by Jón Trausti
    Hello. I'm currently using sp_executesql to execute a T-SQL statement with a dynamic table name. However, it is really ugly to see something like: set sql = 'UPDATE '+Table_Name+' SET ... WHERE '+someVar+' = ... AND '+someVar2' = ...' sp_executesql sql What I would rather like to have is a TABLE variable of which is a reference to a table, so I could do for example: UPDATE TableRef SET ... WHERE ... Because when I have really long T-SQL statements it gets really hard to read due to the format of it within a string. Any suggestions would be helpful. Thanks!

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  • Why is floating point byte swapping different from integer byte swapping?

    - by CJ
    I have a binary file of doubles that I need to load using C++. However, my problem is that it was written in big-endian format but the fstream operator will then read the number wrong because my machine is little-endian. It seems like a simple problem to resolve for integers, but for doubles and floats the solutions I have found won't work. How can I (or should I) fix this? I read this as a reference for integer byte swapping: http://stackoverflow.com/questions/105252/how-do-i-convert-between-big-endian-and-little-endian-values-in-c

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  • Apache modules: C module vs mod_wsgi python module - Performance

    - by Gopal
    Hi A client of ours is asking us to implement a module in C in Apache webserver for performance reasons. This module should handle RESTful uri's, access a database and return results in json format. Many people here have recommended python mod_wsgi instead - but for simplicity of programming reasons. Can anyone tell me if there is a significant difference in performance between the mod_wsgi python solution vs. the Apache + C.module. Any anecdotes? Pointers to some study posted online?

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  • Invalid Token when using XPath

    - by Andy5
    Hi I am making a modification to a web application using XPath, and when executed I get an error message - Invalid token! This is basic what I am doing public xmlNode GetSelection (SelectParams params, xmldocument docment) { xpathstring = string.format("Name =\'{0}' Displaytag = \'{1}' Manadatory=\'{2}', params.Name, params.Displaytag, params.Manadatory); return document.selectsinglenode(xpathstring); } As you can see, I am making a string and setting values on the nodes I am trying to find against my xml document, and thus returning xml data that matches my parameters. What is happening is that I am getting an xpathexeception error in Visual Studio and it says invalid token. I do know that in the xml document that the parameters I am looking in the tags have double quotes, for example, Name="ABC". So, I thought the problem could be solved using an "\". Can anyone help? Update from comments In the Xml Document, the tag has attributes where they are set as Name="ABC" Displaytag="ATag" Manadatory="true".

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  • Table not Echoing out if another Table has a Zero value

    - by John
    Hello, The table below with mysql_query($sqlStr3) (the one with the word "Joined" in its row) does not echo if the result associated with mysql_query($sqlStr1) has a value of zero. This happens even if mysql_query($sqlStr3) returns a result. In other words, if a given loginid has an entry in the table "login", but not one in the table "submission", then the table associated with mysql_query($sqlStr3) does not echo. I don't understand why the "submission" table would have any effect on mysql_query($sqlStr3), since the $sqlStr3 only deals with another table, called "login", as seen below. Any ideas why this is happening? Thanks in advance, John W. <?php echo '<div class="profilename">User Profile for </div>'; echo '<div class="profilename2">'.$profile.'</div>'; $tzFrom = new DateTimeZone('America/New_York'); $tzTo = new DateTimeZone('America/Phoenix'); $profile = mysql_real_escape_string($_GET['profile']); $sqlStr = "SELECT l.username, l.loginid, s.loginid, s.submissionid, s.title, s.url, s.datesubmitted, s.displayurl FROM submission AS s INNER JOIN login AS l ON s.loginid = l.loginid WHERE l.username = '$profile' ORDER BY s.datesubmitted DESC"; $result = mysql_query($sqlStr); $arr = array(); echo "<table class=\"samplesrec1\">"; while ($row = mysql_fetch_array($result)) { $dt = new DateTime($row["datesubmitted"], $tzFrom); $dt->setTimezone($tzTo); echo '<tr>'; echo '<td class="sitename3">'.$dt->format('F j, Y &\nb\sp &\nb\sp g:i a').'</a></td>'; echo '<td class="sitename1"><a href="http://www.'.$row["url"].'">'.$row["title"].'</a></td>'; echo '</tr>'; } echo "</table>"; $sqlStr1 = "SELECT l.username, l.loginid, s.loginid, s.submissionid, s.title, s.url, s.datesubmitted, s.displayurl, l.created, count(s.submissionid) countSubmissions FROM submission AS s INNER JOIN login AS l ON s.loginid = l.loginid WHERE l.username = '$profile'"; $result1 = mysql_query($sqlStr1); $arr1 = array(); echo "<table class=\"samplesrec2\">"; while ($row1 = mysql_fetch_array($result1)) { echo '<tr>'; echo '<td class="sitename5">Submissions: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$row1["countSubmissions"].'</td>'; echo '</tr>'; } echo "</table>"; $sqlStr2 = "SELECT l.username, l.loginid, c.loginid, c.commentid, c.submissionid, c.comment, c.datecommented, l.created, count(c.commentid) countComments FROM comment AS c INNER JOIN login AS l ON c.loginid = l.loginid WHERE l.username = '$profile'"; $result2 = mysql_query($sqlStr2); $arr2 = array(); echo "<table class=\"samplesrec3\">"; while ($row2 = mysql_fetch_array($result2)) { echo '<tr>'; echo '<td class="sitename5">Comments: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$row2["countComments"].'</td>'; echo '</tr>'; } echo "</table>"; $tzFrom3 = new DateTimeZone('America/New_York'); $tzTo3 = new DateTimeZone('America/Phoenix'); $sqlStr3 = "SELECT created, username FROM login WHERE username = '$profile'"; $result3 = mysql_query($sqlStr3); $arr3 = array(); echo "<table class=\"samplesrec4\">"; while ($row3 = mysql_fetch_array($result3)) { $dt3 = new DateTime($row3["created"], $tzFrom3); $dt3->setTimezone($tzTo3); echo '<tr>'; echo '<td class="sitename5">Joined: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.$dt->format('F j, Y').'</td>'; echo '</tr>'; } echo "</table>"; ?> </body> </html>

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  • Select row data as ColumnName and Value

    - by Bobcat1506
    I have a history table and I need to select the values from this table in ColumnName, ColumnValue form. I am using SQL Server 2008 and I wasn’t sure if I could use the PIVOT function to accomplish this. Below is a simplified example of what I need to accomplish: This is what I have: The table’s schema is CREATE TABLE TABLE1 (ID INT PRIMARY KEY, NAME VARCHAR(50)) The “history” table’s schema is CREATE TABLE TABLE1_HISTORY( ID INT, NAME VARCHAR(50), TYPE VARCHAR(50), TRANSACTION_ID VARCHAR(50)) Here is the data from TABLE1_HISTORY ID NAME TYPE TRANSACTION_ID 1 Joe INSERT a 1 Bill UPDATE b 1 Bill DELETE c I need to extract the data from TABLE1_HISTORY into this format: TransactionId Type ColumnName ColumnValue a INSERT ID 1 a INSERT NAME Joe b UPDATE ID 1 b UPDATE NAME Bill c DELETE ID 1 c DELETE NAME Bill Other than upgrading to Enterprise Edition and leveraging the built in change tracking functionality, what is your suggestion for accomplishing this task?

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  • How can I read JSON file from disk and store to array in Swift

    - by Ezekiel Elin
    I want to read a file from Disk in a swift file. It can be a relative or direct path, that doesn't matter. How can I do that? I've been playing with something like this let classesData = NSData .dataWithContentsOfMappedFile("path/to/classes.json"); And it finds the file (i.e. doesn't return nil) but I don't know how to manipulate and convert to JSON, the data returned. It isn't in a string format and String() isn't working on it.

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  • Handling Data Hierarchies in code

    - by Miau
    Hi there So, say I have a string to parse with a given format that maps to a tree like data structure. The string is kinda similar to a folder path, and the structure is similar to a file structure, except its got some rules so for something@cat1@otherSomething you would get /something/cat1/otherSomething for something@cat2@otherSomething you would get /something/cat2/otherSomething other examples /OtherThing/cat1/otherSomething/Blah /OtherThing/cat4/otherSomething Where something, cat1, otherSomethign, etc are some sort of instances of ICategory There are certain rules that control what subcategories are valid and which subcategories are not acceptable, at the moment I m considering a heavy Object hierachy, but I know this is not a flexible solution, I d prefer the categories to be a bit more general but again, since there are rules about what can go next I m not sure how to do this. An example of a rule can be: OtherThing can only have subcategories cat1 and cat4 ( anything else is invalid) An option would be to use some sort of convention based aproach to instantiate a particular class given a subsection of the string(like cat4) but it seems a bit too complex, I m all ears Thanks

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  • How do I best run a search on Date when it is not a :has_many association?

    - by Angela
    I have a number of activities that have a calculated scheduled date. The activities, for example, Email, have a email.days method which is the days from a Contact.start_date on which it should be sent. This means contact.start_date + email.days yields a date on which email is sent to contact. I would like to use link_to around the date, so I can see all the emails and associated contacts that are to be scheduled on that date. However, this "date" is not an attribute or an associate, so I'm not linking to a model's view. It's calculated. So: 1) What should the actual "format" of the date that gets passed in the URl be? What is the method to do the consistent conversion? 2) How do I (find) all instances, because this "date" is not an actual attribute, is it a calculated value which changes depending on the two associated models of Contact and Email. Thanks.

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  • New to C# and trying to use a global variable

    - by Andrew G. Johnson
    Is it possible to use global variables in C#? I'm coming from mainly a PHP background so variables are either accessible everywhere or just a global definition away. My main issue is I have a User class that I built myself to wrap around the current users table on my company's database. I am defining it in the MasterPage but can't seem to access it from the actual pages (I don't know if there's a better word to describe them but they are the pages that inherit the styles and format from the MasterPage) Any general tips or implementation practices for me? EDIT: here's some code snippets of what I'm trying to do: Site.master.cs public partial class SiteMaster : System.Web.UI.MasterPage { public User user = new User(); } logout.aspx <%@ Page Title="" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="logout.aspx.cs" Inherits="logout" %> <%@ MasterType virtualPath="~/Site.master"%> logout.aspx.cs public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { User user = Master.user; } }

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  • Regular expressions and matching URLs with metacharacters

    - by James P.
    I'm having trouble finding a regular expression that matches the following String. Korben;http://feeds.feedburner.com/KorbensBlog-UpgradeYourMind?format=xml;1 One problem is escaping the question mark. Java's pattern matcher doesn't seem to accept \? as a valid escape sequence but it also fails to work with the tester at myregexp.com. Here's what I have so far: ([a-zA-Z0-9])+;http://([a-zA-Z0-9./-]+);[0-9]+ Any suggestions? Edit: The original intent was to match all URLs that could be found after the first semi colon.

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  • Permanently write variables to a php file with php

    - by Oliver
    I need to be able to permanently change variables in a php file using php. I am creating a multilanguage site using codeigniter and using the language helper which stores the text in php files in variables in this format: $lang['title'] = "Stuff"; I've been able to access the plain text of the files using fopen() etc and I it seems that I could probably locate the areas I want to edit with with regular expressions and rewrite the file once I've made the changes but it seems a bit hacky. Is there any easy way to edit these variables permanently using php? Cheers

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  • Using Apache Velocity with StringBuilders/CharSequences

    - by mindas
    We are using Apache Velocity for dynamic templates. At the moment Velocity has following methods for evaluation/replacing: public static boolean evaluate(Context context, Writer writer, String logTag, Reader reader) public static boolean evaluate(Context context, Writer out, String logTag, String instring) We use these methods by providing StringWriter to write evaluation results. Our incoming data is coming in StringBuilder format so we use StringBuilder.toString and feed it as instring. The problem is that our templates are fairly large (can be megabytes, tens of Ms on rare cases), replacements occur very frequently and each replacement operation triples the amount of required memory (incoming data + StringBuilder.toString() which creates a new copy + outgoing data). I was wondering if there is a way to improve this. E.g. if I could find a way to provide a Reader and Writer on top of same StringBuilder instance that only uses extra memory for in/out differences, would that be a good approach? Has anybody done anything similar and could share any source for such a class? Or maybe there any better solutions to given problem?

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  • Create a New .Net Profiler Api

    - by daniel
    Hi everybody! i m a new programmer in .Net Profiler and Visual C++, i read many forums and weblogs for .Net Profiling and i have this question. my Profiler application must be a unmanaged code or i can use some class in .Net in my application? and what type of project i must create ATL with MFC Or ..? another question is how can i register my profiler dll file that every application of my computer use this profiler? where the best situation for re-write IL of a method (Enter method of profiler or JITCompilationStarted)? how can i get input variables of old method and send to new method? how can i change IL of a property or whole of a class? i want chane all datetime format of my dlls, and i think that i must search name of those method in JITCompilationStarted and then rewrite that methods,Do u have any better solution? thanks alot.

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  • How do I save a copy of the clipboard and then revert back to it?

    - by cksubs
    I'm reading words in a text box by simulating the key presses required to highligh and copy the text. When I'm done, I want the clipboard to be exactly how I found it. I was hoping I'd be able to do something like this: IDataObject clipboardBackup = Clipboard.GetDataObject(); Clipboard.Clear(); //Save other things into the clipboard here, etc// Clipboard.SetDataObject(clipboardBackup); But that doesn't seem to work. It looks like you can go the route of specifically trying for text, audio, pictures, etc. and then saving them accordingly. (I guess 'data object' is specialized like that in my example too, I was hoping it was generic.) I'd prefer not to use cases for every possible type of clipboard data, both to be more concise and to make sure I never lose the data regardless of format. Any tips for grabbing any and all of the clipboard and then restoring it?

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  • Save BLOB to disk as Image C#

    - by TGuimond
    Hello, I am developing a web application that calls web services developed by a third party to send/receive data from a clients database. I am building the application using ASP.NET 3.5 C#. The way that they are providing me images is in BLOB format. I call their method and what I get back is a DataSet with 2 fields "logo_name" and "logo" which is the BLOB field. What I want to do is: Save the image locally on the disk (to minimize calls to their database in the future). I have been playing around with a couple of different ways of doing this but cannot seem to get the image to save correctly. I have been able to create a file in a folder with the correct name but if I try to view the image it does not work. I was hoping someone could give me some sample code to show me how to save a BLOB field to the local disk? Thanks

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  • Need help configuring SQL Server CE connections string in Fluent NHibernate

    - by Yoav
    Hi, I'm trying to return a session factory using this code: return Fluently.Configure() .Database(MsSqlCeConfiguration.Standard.ShowSql().ConnectionString(path)) .Mappings(m => m.FluentMappings.AddFromAssemblyOf<Project>()) .BuildSessionFactory(); Path is the full path to an .sdf file. And get this exception: System.ArgumentException: Format of the initialization string does not conform to specification starting at index 0. at System.Data.SqlServerCe.ConStringUtil.GetKeyValuePair(Char[] connectionString, Int32 currentPosition, String& key, Char[] valuebuf, Int32& vallength, Boolean& isempty) What am I doing wrong?

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