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  • Data-binding taking too long to update

    - by Justin
    In my application I have this code in my view model: hiddenTextContainer.PreHideVerticalOffset = VerticalOffset; hiddenTextContainer.HiddenText = Text.Remove(SelectionStart, SelectionLength); hiddenTextContainer.HasHiddenText = true; hiddenTextContainer.NonHiddenTextStart = SelectionStart; Text = Text.Substring(SelectionStart, SelectionLength); SelectionStart = Text.Length; hiddenTextContainer.ImmediatePostHideVerticalOffset = VerticalOffset; This code is used to hide selected text in a textbox. Text is a string property data bound to the text property of a textbox and VerticalOffset is a double property data bound to the VerticalOffset property of that same textbox. I need to save the VerticalOffset before and after the hiding of selected text takes place, but with my code below both hiddenTextContainer.PreHideVerticalOffset and hiddenTextContainer.ImmediatePostHideVerticalOffset are always set to the same value no matter what. I have figured out that this is because the text of the textbox has not been updated by the time the code reaches: hiddenTextContainer.ImmediatePostHideVerticalOffset = VerticalOffset; Is there any way I can fix this?

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  • What scenarios/settings will result in a query on SQL Server (2008) return stale data

    - by s1mm0t
    Most applications rarely need to display 100% accurate data. For example if this stack overflow question displays that there have been 0 views, when there have really been 10, it doesn't really matter. This is one way that the (perceived) performance of applications can be improved, by caching results and therefore sometimes not showing 100% accurate results. There are some cases where the data does need to be 100% accurate though. So if I run the query select * from Foo I want to be sure that the results are not stale. Now depending on how my database is set up, other activity on the database, use of transactions and isolation levels etc this query may or may not be a true reflection of the world. What scenario's and settings can people think of that will result in this query returning stale results or given that another connection is part way through a transaction that has updated this table, how can I guarantee that when the above query returns, the results will be accurate.

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  • Django model data consistency

    - by Mark
    When creating a form, you can define a bunch of methods, clean_xyz, to make sure the data gets forced into the correct format. Is there any way to do this on a model level? Perhaps I can override the field setters somehow? I want it so that if I write something like my_address.postal_code = 'a1b2c3' It will automatically get formatted into A1B 2C3. Perhaps throw an exception if it can't be converted. That way I know I'll never have any malformed data in the database.

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  • memcpy does not copy the data

    - by user437777
    I am caught up with a weird problem. I have one build that copies data using memcpy, while another build does not. I don't understand why, because the relevant file is still the same. I am using following code: memcpy(pxCurrentInfo, &pxInfoBuffer->axgInfoBuffer[0], sizeof(tInfo)); Data in pxInfoBuffer is fine. When I check pxCurrentInfo they are all 0s. tInfo is a structure. To give a pointer, when I put the break point and change the value pxCurrentInfo->xDL.eMethod=0 it automatically updates/copies all the correct info from pxInfoBuffer->axgInfoBuffer[0], afterwards. I don't know why.

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  • Codeigniter: Using data in a controller

    - by Kevin Brown
    I'm new to php and CI, and I'm having some trouble in my controller. I feel that I'm doing this the wrong way, and it could be easier, I just don't know the syntax: $data['members'] = $this->home_model->getUser($id); $credit = $this->home_model->getCredit($id); if ($credit == '0'){stuff...} So I'm getting the user's data that has their the same information as "getCredit" does, but I don't know how to get the single variable that I need for my if statement... How can I just use the "getUser" function so that I'm not pulling redundant information?

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  • Changing populated DataTable column data types

    - by TonE
    Hi, I have a System.Data.DataTable which is populated by reading a CSV file which sets the datatype of each column to string. I want to append the contents of the DataTable to an existing database table - currently this is done using SqlBulkCopy with the DataTable as the source. However, the column data types of the DataTable need to be changed to match the schema of the target database table, handling null values. I am not very familiar with ADO.NET so have been search for a clean way of doing this? Thanks.

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  • data loading - app launching on tableview

    - by wallou
    hi, i encounter an issue with my application. On one hand when my app launches, the first view displayed is a tableview within a tableviewcontroller. On the other hand my app calls a web service to collect data. These methods are in MyAppDelegate\applicationDidFinishLaunching. The thing is that my tableview is made of custom cells that need data from the web service. I noticed that the view (with the tableview) is launched first and then MyAppDelegate\applicationDidFinishLaunchin is executed. As a result the labels of my custom cells are all equal to null as my arrays aren't filled yet by the web service. I would like to know the proper way to make it. If anyone has an idea please tell me. Wallou

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  • Pass database data to multiples views-Laravel

    - by user3696018
    I have a database with details of daily sales. To query a database, I have a form in a view with parameters that will query as date of admission, client and others. The result is shown in another view with the daily details of income, and below is a summary of the article do all entered. The summary I wish to transfer to another view, try to view :: composer but only transfer the empty query (I saw it with debug bar). Just appeared an empty view. How I can transfer data from the database without the latter view is empty? The second html view is totaly diferent , only the data is the same.

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  • Passing Large amount of data in PHP.

    - by Simple
    I would like to know what is the best way to pass a large amount of XML data from one PHP script to another. I have a script that reads in an XML feed of jobs. I would like to have the script display a list of the job titles as links. When the user clicks a link they would be taken to another page displaying the details for that job. The job details are too large to send in the query string, and it seems poor style to start a session for data that isn't specific to that user. Any ideas?

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  • PHP Passing Data to a Specific Class? (Data Encapsulation)

    - by Adam184
    I've learned that OOP is all about data encapsulation, but what about passing data between classes that have nothing to do with each other (would the below example be worthy of using extends)? class Dog { private $secretVar; public function getSecretVar() { $this->secretVar = 'psst... only for rainbow!'; return $this->secretVar; } } class Rainbow { public function __construct(Dog $Dog) { print_r($Dog->getSecretVar()); } } $Dog = new Dog(); $Rainbow = new Rainbow($Dog); // ... classes that don't need the $secretVar How would you encapsulate $secretVar for only classes Dog and Rainbow? As of now, anyone can call getSecretVar(), and I'm having a hard time allowing that to happen as it seems to defeat the whole point of encapsulation.

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  • how to visualize (value, count) dataset with thousands data points

    - by user510040
    I have a file with 2 numeric columns: value and count. File may have 5000 rows. I do plot(value, count) to find the shape of distribution. But because there are too many data points the picture is not very clear. Do you know better visualization approach? Probably histograms or barplot with grouping close values on x axis will be the better way to look on data? I cannot figure out the syntax of using histogram or barplot for my case.

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  • How to insert scraping data to mysql

    - by user1887288
    i am fetching data from other websites can any one tell me how to insert fetch data to mysql database Below code i am using to fetch results coming $urls = $_POST["urls"]; require_once('simple_html_dom.php'); $useragent = 'Googlebot/2.1 (http://www.googlebot.com/bot.html)'; foreach ($urls as $url) { $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 20); curl_setopt($curl, CURLOPT_USERAGENT, $useragent); $str = curl_exec($curl); curl_close($curl); $html= str_get_html($str); foreach($html->find('span.price') as $e) echo $e->innertext . '<br>'; }

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  • strange data annotations issue in MVC 2

    - by femi
    Hello, I came across something strange when creating an edit form with MVC 2. i realised that my error messages come up on form sumission even when i have filled ut valid data! i am using a buddy class which i have configured correctly ( i know that cos i can see my custom errors). Here is the code from the viewmodel that generates this; <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<TG_Careers.Models.Applicant>" %> <script src="/Scripts/MicrosoftAjax.js" type="text/javascript"></script> <script src="/Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script> <script src="/Scripts/MicrosoftMvcValidation.js" type="text/javascript"></script> <%= Html.ValidationSummary() %> <% Html.EnableClientValidation(); %> <% using (Html.BeginForm()) {%> <div class="confirm-module"> <table cellpadding="4" cellspacing="2"> <tr> <td><%= Html.LabelFor(model => model.FirstName) %> </td> <td><%= Html.EditorFor(model => model.FirstName) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.FirstName) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.MiddleName) %></td> <td><%= Html.EditorFor(model => model.MiddleName) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.MiddleName) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.LastName) %></td> <td><%= Html.EditorFor(model => model.LastName) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.LastName) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.Gender) %></td> <td><%= Html.EditorFor(model => model.Gender) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.Gender) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.MaritalStatus) %></td> <td> <%= Html.EditorFor(model => model.MaritalStatus) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.MaritalStatus) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.DateOfBirth) %></td> <td><%= Html.EditorFor(model => model.DateOfBirth) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.DateOfBirth) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.Address) %></td> <td><%= Html.EditorFor(model => model.Address) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.Address) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.City) %></td> <td><%= Html.EditorFor(model => model.City) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.City) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.State) %></td> <td><%= Html.EditorFor(model => model.State) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.State) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.StateOfOriginID) %></td> <td><%= Html.DropDownList("StateOfOriginID", new SelectList(ViewData["States"] as IEnumerable, "StateID", "Name", Model.StateOfOriginID))%></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.StateOfOriginID) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.CompletedNYSC) %></td> <td><%= Html.EditorFor(model => model.CompletedNYSC) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.CompletedNYSC) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.YearsOfExperience) %></td> <td><%= Html.EditorFor(model => model.YearsOfExperience) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.YearsOfExperience) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.MobilePhone) %></td> <td><%= Html.EditorFor(model => model.MobilePhone) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.MobilePhone) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.DayPhone) %></td> <td> <%= Html.EditorFor(model => model.DayPhone) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.DayPhone) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.CVFileName) %></td> <td><%= Html.EditorFor(model => model.CVFileName) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.CVFileName) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.CurrentPosition) %></td> <td><%= Html.EditorFor(model => model.CurrentPosition) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.CurrentPosition) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.EmploymentCommenced) %></td> <td><%= Html.EditorFor(model => model.EmploymentCommenced) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.EmploymentCommenced) %></td> </tr> <tr> <td><%= Html.LabelFor(model => model.DateofTakingupCurrentPosition) %></td> <td><%= Html.EditorFor(model => model.DateofTakingupCurrentPosition) %></td> </tr> <tr> <td colspan="2"><%= Html.ValidationMessageFor(model => model.DateofTakingupCurrentPosition) %></td> </tr> <tr> <td>&nbsp;</td> <td>&nbsp;</td> </tr> <tr> <td colspan="2">&nbsp;</td> </tr> </table> <p> <input type="submit" value="Save Profile Details" /> </p> </div> <% } %> Any ideas on this one please? Thanks

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  • IIRF reverse proxy problem

    - by Sergei
    Hi everyone, We have a java application ( Atlassian Bamboo) running on port 8085 on Windows 2003. It is accessile as http: //bamboo:8085. I am trying to setup reverse proxy for IIS6 using IIRF so content is accessible via http: //bamboo. It seems that I set it ip correctly, and I can retrieve Status page. This is how my IIRF.ini looks like: RewriteLog c:\temp\iirf RewriteLogLevel 2 StatusUrl /iirfStatus RewriteCond %{HTTP_HOST} ^bambooi$ [I] #This setup works #ProxyPass ^/(.*)$ http://othersite/$1 #This does not ProxyPass ^/(.*)$ http://bamboo:8085/$1 However when I type in http: //bamboo in IE, I get 'page cannot be displayed ' message. FF does not return anything at all. I made Wireshark network dump, selected 'follow TCPstream' and it seems like correct page is being retrieved.Why cannot I see it then? I also noticed that I can retrieve http: //bamboo/favicon.ico so I must be very close to the solution.. This is the Wireshark output: GET / HTTP/1.1 Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, */* Accept-Language: en-gb User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729) Accept-Encoding: gzip, deflate Host: bamboo Connection: Keep-Alive Cookie: JSESSIONID=wpsse0zyo4g5 HTTP/1.1 200 200 OK Date: Sat, 30 Jan 2010 09:19:46 GMT Server: Microsoft-IIS/6.0 Via: 1.1 DESTINATION_IP (IIRF 2.0) Content-Type: text/html; charset=utf-8 Transfer-Encoding: chunked <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Dashboard</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> <meta name="robots" content="all" /> <meta name="MSSmartTagsPreventParsing" content="true" /> <meta http-equiv="Pragma" content="no-cache" /> <meta http-equiv="Expires" content="-1" /> <link type="text/css" rel="stylesheet" href="/s/1206/1/_/scripts/yui-2.6.0/build/grids/grids.css" /> <!--<link type="text/css" rel="stylesheet" href="/s/1206/1/_/scripts/yui/build/reset-fonts-grids/reset-fonts-grids.css" />--> <link rel="stylesheet" href="/s/1206/1/_/styles/main.css" type="text/css" /> <link rel="stylesheet" href="/s/1206/1/_/styles/main2.css" type="text/css" /> <link rel="stylesheet" href="/s/1206/1/_/styles/global-static.css" type="text/css" /> <link rel="stylesheet" href="/s/1206/1/_/styles/widePlanList.css" type="text/css" /> <link rel="stylesheet" href="/s/1206/1/_/styles/forms.css" type="text/css" /> <link rel="stylesheet" href="/s/1206/1/_/styles/yui-support/yui-custom.css" type="text/css" /> <link rel="shortcut icon" href="/s/1206/1/_/images/icons/favicon.ico" type="image/x-icon"/> <link rel="icon" href="/s/1206/1/_/images/icons/favicon.png" type="image/png" /> <link rel="stylesheet" href="/s/1206/1/_/styles/bamboo-tabs.css" type="text/css" /> <!-- Core YUI--> <link rel="stylesheet" type="text/css" href="/s/1206/1/_/scripts/yui-2.6.0/build/tabview/assets/tabview-core.css"> <link rel="stylesheet" type="text/css" href="/s/1206/1/_/scripts/yui-2.6.0/build/tabview/assets/skins/sam/tabview-skin.css"> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/yahoo/yahoo-min.js"></script> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/event/event-min.js" ></script> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/dom/dom-min.js" ></script> <!--<script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/animation/animation.js" ></script>--> <!-- Container --> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/container/container-min.js"></script> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/connection/connection-min.js"></script> <link type="text/css" rel="stylesheet" href="/s/1206/1/_/scripts/yui-2.6.0/build/container/assets/container.css" /> <!-- Menu --> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/menu/menu-min.js"></script> <link type="text/css" rel="stylesheet" href="/s/1206/1/_/scripts/yui-2.6.0/build/menu/assets/menu.css" /> <!-- Tab view --> <!-- JavaScript Dependencies for Tabview: --> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/yahoo-dom-event/yahoo-dom-event.js"></script> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/element/element-beta-min.js"></script> <!-- Needed for old versions of the YUI --> <link rel="stylesheet" href="/s/1206/1/_/styles/yui-support/tabview.css" type="text/css" /> <link rel="stylesheet" href="/s/1206/1/_/styles/yui-support/round_tabs.css" type="text/css" /> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/tabview/tabview-min.js"></script> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-2.6.0/build/json/json-min.js"></script> <script type="text/javascript" src="/s/1206/1/_/scripts/yui-ext/yui-ext-nogrid.js"></script> <script type="text/javascript" src="/s/1206/1/_/scripts/bamboo.js"></script> <script type="text/javascript"> YAHOO.namespace('bamboo'); 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YAHOO.bamboo.tabPanel = jtabs; // Use setUrl for Ajax loading var tab3 = jtabs.addTab('allTab', "All Plans"); tab3.setUrl('/ajax/displayAllBuildSummaries.action', null, true); var tab4 = jtabs.addTab("currentTab", "Current Activity"); tab4.setUrl('/ajax/displayCurrentActivity.action', null, true); var handleTabChange = function(e, activePanel) { saveCookie('atlassian.bamboo.dashboard.tab.selected', activePanel.id, 365); }; jtabs.on('tabchange', handleTabChange); var selectedCookie = getCookieValue('atlassian.bamboo.dashboard.tab.selected'); if (jtabs.getTab(selectedCookie)) { jtabs.activate(selectedCookie); } else { jtabs.activate('allTab'); } } YAHOO.util.Event.onContentReady('buildSummaryTabs', initUI); </script> </div> <script type="text/javascript"> setTimeout( "window.location.reload()", 1800*1000 ); </script> <div class="clearer" ></div> </div> <!-- END #content --> </div> <!-- END #bd --> </div> <!-- END #nonFooter --> <div id="ft"> <div id="footer"> <p> Powered by <a href="http://www.atlassian.com/software/bamboo/">Atlassian Bamboo</a> version 2.2.1 build 1206 - <span title="15:59:44 17 Mar 2009">17 Mar 09</span> </p> <ul> <li class="first"> <a href="https://support.atlassian.com/secure/CreateIssue.jspa?pid=10060&issuetype=1">Report a problem</a> </li> <li> <a href="http://jira.atlassian.com/secure/CreateIssue.jspa?pid=11011&issuetype=4">Request a feature</a> </li> <li> <a href="http://forums.atlassian.com/forum.jspa?forumID=103">Contact Atlassian</a> </li> <li> <a href="/viewAdministrators.action">Contact Administrators</a> </li> </ul> </div> <!-- END #footer --> </div> <!-- END #ft -->

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  • Reading data in from file

    - by user667430
    Hi Here is link if you want to download application: Simple banking app Text file with data to read I am trying to create a simple banking application that reads in data from a text file. So far i have managed to read in all the customers which there are 20 of them. However when reading in the accounts and transactions stuff it only reads in 20 but there is alot more in the text file. Here is what i have so far. I think it has something to do with the nested for loop in the getNextCustomer method. using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.IO; using System.Linq; using System.Text; using System.Windows.Forms; namespace e_SOFT_Banking { public partial class Form1 : Form { public static ArrayList bankDetails = new ArrayList(); public static ArrayList accDetails = new ArrayList(); public static ArrayList tranDetails = new ArrayList(); string inputDataFile = @"C:\e-SOFT_v1.txt"; const int numCustItems = 14; const int numAccItems = 7; const int numTransItems = 5; public Form1() { InitializeComponent(); setUpBank(); } private void btnShowData_Click_1(object sender, EventArgs e) { showListsOfCust(); } private void setUpBank() { readData(); } private void showListsOfCust() { listBox1.Items.Clear(); foreach (Customer c in bankDetails) listBox1.Items.Add(c.getCustomerNumber() + " " + c.getCustomerTitle() + " " + c.getFirstName() + " " + c.getInitials() + " " + c.getSurname() + " " + c.getDateOfBirth() + " " + c.getHouseNameNumber() + " " + c.getStreetName() + " " + c.getArea() + " " + c.getCityTown() + " " + c.getCounty() + " " + c.getPostcode() + " " + c.getPassword() + " " + c.getNumberAccounts()); foreach (Account a in accDetails) listBox1.Items.Add(a.getAccSort() + " " + a.getAccNumber() + " " + a.getAccNick() + " " + a.getAccDate() + " " + a.getAccCurBal() + " " + a.getAccOverDraft() + " " + a.getAccNumTrans()); foreach (Transaction t in tranDetails) listBox1.Items.Add(t.getDate() + " " + t.getType() + " " + t.getDescription() + " " + t.getAmount() + " " + t.getBalAfter()); } private void readData() { StreamReader readerIn = null; Transaction curTrans; Account curAcc; Customer curCust; bool anyMoreData; string[] customerData = new string[numCustItems]; string[] accountData = new string[numAccItems]; string[] transactionData = new string[numTransItems]; if (readOK(inputDataFile, ref readerIn)) { anyMoreData = getNextCustomer(readerIn, customerData, accountData, transactionData); while (anyMoreData == true) { curCust = new Customer(customerData[0], customerData[1], customerData[2], customerData[3], customerData[4], customerData[5], customerData[6], customerData[7], customerData[8], customerData[9], customerData[10], customerData[11], customerData[12], customerData[13]); curAcc = new Account(accountData[0], accountData[1], accountData[2], accountData[3], accountData[4], accountData[5], accountData[6]); curTrans = new Transaction(transactionData[0], transactionData[1], transactionData[2], transactionData[3], transactionData[4]); bankDetails.Add(curCust); accDetails.Add(curAcc); tranDetails.Add(curTrans); anyMoreData = getNextCustomer(readerIn, customerData, accountData, transactionData); } if (readerIn != null) readerIn.Close(); } } private bool getNextCustomer(StreamReader inNext, string[] nextCustomerData, string[] nextAccountData, string[] nextTransactionData) { string nextLine; int numCItems = nextCustomerData.Count(); int numAItems = nextAccountData.Count(); int numTItems = nextTransactionData.Count(); for (int i = 0; i < numCItems; i++) { nextLine = inNext.ReadLine(); if (nextLine != null) { nextCustomerData[i] = nextLine; if (i == 13) { int cItems = Convert.ToInt32(nextCustomerData[13]); for (int q = 0; q < cItems; q++) { for (int a = 0; a < numAItems; a++) { nextLine = inNext.ReadLine(); nextAccountData[a] = nextLine; if (a == 6) { int aItems = Convert.ToInt32(nextAccountData[6]); for (int w = 0; w < aItems; w++) { for (int t = 0; t < numTItems; t++) { nextLine = inNext.ReadLine(); nextTransactionData[t] = nextLine; } } } } } } } else return false; } return true; } private bool readOK(string readFile, ref StreamReader readerIn) { try { readerIn = new StreamReader(readFile); return true; } catch (FileNotFoundException notFound) { MessageBox.Show("ERROR Opening file (when reading data in)" + " - File could not be found.\n" + notFound.Message); return false; } catch (Exception e) { MessageBox.Show("ERROR Opening File (when reading data in)" + "- Operation failed.\n" + e.Message); return false; } } } } I also have three classes one for customers, one for accounts and one for transactions, which follow in that order. using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace e_SOFT_Banking { class Customer { private string customerNumber; private string customerTitle; private string firstName; private string initials; //not required - defaults to null private string surname; private string dateOfBirth; private string houseNameNumber; private string streetName; private string area; //not required - defaults to null private string cityTown; private string county; private string postcode; private string password; private int numberAccounts; public Customer(string theCustomerNumber, string theCustomerTitle, string theFirstName, string theInitials, string theSurname, string theDateOfBirth, string theHouseNameNumber, string theStreetName, string theArea, string theCityTown, string theCounty, string thePostcode, string thePassword, string theNumberAccounts) { customerNumber = theCustomerNumber; customerTitle = theCustomerTitle; firstName = theFirstName; initials = theInitials; surname = theSurname; dateOfBirth = theDateOfBirth; houseNameNumber = theHouseNameNumber; streetName = theStreetName; area = theArea; cityTown = theCityTown; county = theCounty; postcode = thePostcode; password = thePassword; setNumberAccounts(theNumberAccounts); } public string getCustomerNumber() { return customerNumber; } public string getCustomerTitle() { return customerTitle; } public string getFirstName() { return firstName; } public string getInitials() { return initials; } public string getSurname() { return surname; } public string getDateOfBirth() { return dateOfBirth; } public string getHouseNameNumber() { return houseNameNumber; } public string getStreetName() { return streetName; } public string getArea() { return area; } public string getCityTown() { return cityTown; } public string getCounty() { return county; } public string getPostcode() { return postcode; } public string getPassword() { return password; } public int getNumberAccounts() { return numberAccounts; } public void setCustomerNumber(string inCustomerNumber) { customerNumber = inCustomerNumber; } public void setCustomerTitle(string inCustomerTitle) { customerTitle = inCustomerTitle; } public void setFirstName(string inFirstName) { firstName = inFirstName; } public void setInitials(string inInitials) { initials = inInitials; } public void setSurname(string inSurname) { surname = inSurname; } public void setDateOfBirth(string inDateOfBirth) { dateOfBirth = inDateOfBirth; } public void setHouseNameNumber(string inHouseNameNumber) { houseNameNumber = inHouseNameNumber; } public void setStreetName(string inStreetName) { streetName = inStreetName; } public void setArea(string inArea) { area = inArea; } public void setCityTown(string inCityTown) { cityTown = inCityTown; } public void setCounty(string inCounty) { county = inCounty; } public void setPostcode(string inPostcode) { postcode = inPostcode; } public void setPassword(string inPassword) { password = inPassword; } public void setNumberAccounts(string inNumberAccounts) { try { numberAccounts = Convert.ToInt32(inNumberAccounts); } catch (FormatException invalidInput) { System.Windows.Forms.MessageBox.Show("ERROR" + invalidInput.Message + "Please enter a valid number"); } } } } Accounts: using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace e_SOFT_Banking { class Account { private string accSort; private Int64 accNumber; private string accNick; private string accDate; //not required - defaults to null private double accCurBal; private double accOverDraft; private int accNumTrans; public Account(string theAccSort, string theAccNumber, string theAccNick, string theAccDate, string theAccCurBal, string theAccOverDraft, string theAccNumTrans) { accSort = theAccSort; setAccNumber(theAccNumber); accNick = theAccNick; accDate = theAccDate; setAccCurBal(theAccCurBal); setAccOverDraft(theAccOverDraft); setAccNumTrans(theAccNumTrans); } public string getAccSort() { return accSort; } public long getAccNumber() { return accNumber; } public string getAccNick() { return accNick; } public string getAccDate() { return accDate; } public double getAccCurBal() { return accCurBal; } public double getAccOverDraft() { return accOverDraft; } public int getAccNumTrans() { return accNumTrans; } public void setAccSort(string inAccSort) { accSort = inAccSort; } public void setAccNumber(string inAccNumber) { try { accNumber = Convert.ToInt64(inAccNumber); } catch (FormatException invalidInput) { System.Windows.Forms.MessageBox.Show("ERROR" + invalidInput.Message + "Please enter a valid number"); } } public void setAccNick(string inAccNick) { accNick = inAccNick; } public void setAccDate(string inAccDate) { accDate = inAccDate; } public void setAccCurBal(string inAccCurBal) { try { accCurBal = Convert.ToDouble(inAccCurBal); } catch (FormatException invalidInput) { System.Windows.Forms.MessageBox.Show("ERROR" + invalidInput.Message + "Please enter a valid number"); } } public void setAccOverDraft(string inAccOverDraft) { try { accOverDraft = Convert.ToDouble(inAccOverDraft); } catch (FormatException invalidInput) { System.Windows.Forms.MessageBox.Show("ERROR" + invalidInput.Message + "Please enter a valid number"); } } public void setAccNumTrans(string inAccNumTrans) { try { accNumTrans = Convert.ToInt32(inAccNumTrans); } catch (FormatException invalidInput) { System.Windows.Forms.MessageBox.Show("ERROR" + invalidInput.Message + "Please enter a valid number"); } } } } Transactions: using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace e_SOFT_Banking { class Transaction { private string date; private string type; private string description; private double amount; //not required - defaults to null private double balAfter; public Transaction(string theDate, string theType, string theDescription, string theAmount, string theBalAfter) { date = theDate; type = theType; description = theDescription; setAmount(theAmount); setBalAfter(theBalAfter); } public string getDate() { return date; } public string getType() { return type; } public string getDescription() { return description; } public double getAmount() { return amount; } public double getBalAfter() { return balAfter; } public void setDate(string inDate) { date = inDate; } public void setType(string inType) { type = inType; } public void setDescription(string inDescription) { description = inDescription; } public void setAmount(string inAmount) { try { amount = Convert.ToDouble(inAmount); } catch (FormatException invalidInput) { System.Windows.Forms.MessageBox.Show("ERROR" + invalidInput.Message + "Please enter a valid number"); } } public void setBalAfter(string inBalAfter) { try { balAfter = Convert.ToDouble(inBalAfter); } catch (FormatException invalidInput) { System.Windows.Forms.MessageBox.Show("ERROR" + invalidInput.Message + "Please enter a valid number"); } } } } Any help greatly appreciated.

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  • Cloud Computing Architecture Patterns: Don’t Focus on the Client

    - by BuckWoody
    Normally I try to put topics in the positive in other words "Do this" not "Don't do that". Sometimes its clearer to focus on what *not* to do. Popular development processes often start with screen mockups, or user input descriptions. In a scale-out pattern like Cloud Computing on Windows Azure, that's the wrong place to start. Start with the Data    Instead, I recommend that you start with the data that a process requires. That data might be temporary or persisted, but starting with the data and its requirements helps to define not only the storage engine you need but also drives everything from security to the integrity of the application. For instance, assume the requirements show that the user must enter their phone number, and that this datum is used in a contact management system further down the application chain. For that datum, you can determine what data type you need (U.S. only or International?) the security requirements, whether it needs ACID compliance, how it will be searched, indexed and so on. From one small data point you can extrapolate out your options for storing and processing the data. Here's the interesting part, which begins to break the patterns that we've used for decades: all of the data doesn't have the same requirements. The phone number might be best suited for a list, or an element, or a string, with either BASE or ACID requirements, based on how it is used. That means we don't have to dump everything into XML, an RDBMS, a NoSQL engine, or a flat file exclusively. In fact, one record might use all of those depending on the use-case requirements. Next Is Data Management  With the data defined, we can move on to how to store the data. Again, the requirements now dictate whether we need a full relational calculus or set-based operations, or we can choose another method based on the requirements for the data. And breaking another pattern its OK to store in more than once, in more than one location. We do this all the time for reporting systems and Business Intelligence systems, so this is a pattern we need to think about even for OLTP data. Move to Data Transport How does the data get around? We can use a connection-based method, sending the data along a transport to the storage engine, but in some cases we may want to use a cache, a queue, the Service Bus, or Complex Event Processing. Finally, Data Processing Most RDBMS engines, NoSQL, and certainly Big Data engines not only store data, but can process and manipulate it as well. Its doubtful that you'll calculate that phone number right? Well, if you're the phone company, you most certainly will. And so we see that even once we've chosen the data type, storage and engine, the same element can have different computing requirements based on how it is used. Sure, We Need A Front-End At Some Point Not all data is entered by human hands in fact most data isn't. We don't really need a Graphical User Interface (GUI) we need some way for a GUI to get data into and out of the systems listed earlier.   But when we do need to allow users to enter or examine data, that should be left to the GUI that best fits the device the user has. Ever tried to use an application designed for a web browser on a phone? Or one designed for a tablet on a phone? Its usually quite painful. The siren song of "We'll just write one interface for all devices" is strong, and has beguiled many an unsuspecting architect. But they just don't work out.   Instead, focus on the data, its transport and processing. Create API calls or a message system that allows for resilient transport to the device or interface, and let it do what it does best. References Microsoft Architecture Journal:   http://msdn.microsoft.com/en-us/architecture/bb410935.aspx Patterns and Practices:   http://msdn.microsoft.com/en-us/library/ff921345.aspx Windows Azure iOS, Android, Windows 8 Mobile Devices SDK: http://www.windowsazure.com/en-us/develop/mobile/tutorials/get-started-ios/ Windows Azure Facebook SDK: http://ntotten.com/2013/03/14/using-windows-azure-mobile-services-with-the-facebook-sdk-for-windows-phone/

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  • Oh no! My padding's invalid!

    - by Simon Cooper
    Recently, I've been doing some work involving cryptography, and encountered the standard .NET CryptographicException: 'Padding is invalid and cannot be removed.' Searching on StackOverflow produces 57 questions concerning this exception; it's a very common problem encountered. So I decided to have a closer look. To test this, I created a simple project that decrypts and encrypts a byte array: // create some random data byte[] data = new byte[100]; new Random().NextBytes(data); // use the Rijndael symmetric algorithm RijndaelManaged rij = new RijndaelManaged(); byte[] encrypted; // encrypt the data using a CryptoStream using (var encryptor = rij.CreateEncryptor()) using (MemoryStream encryptedStream = new MemoryStream()) using (CryptoStream crypto = new CryptoStream( encryptedStream, encryptor, CryptoStreamMode.Write)) { crypto.Write(data, 0, data.Length); encrypted = encryptedStream.ToArray(); } byte[] decrypted; // and decrypt it again using (var decryptor = rij.CreateDecryptor()) using (CryptoStream crypto = new CryptoStream( new MemoryStream(encrypted), decryptor, CryptoStreamMode.Read)) { byte[] decrypted = new byte[data.Length]; crypto.Read(decrypted, 0, decrypted.Length); } Sure enough, I got exactly the same CryptographicException when trying to decrypt the data even in this simple example. Well, I'm obviously missing something, if I can't even get this single method right! What does the exception message actually mean? What am I missing? Well, after playing around a bit, I discovered the problem was fixed by changing the encryption step to this: // encrypt the data using a CryptoStream using (var encryptor = rij.CreateEncryptor()) using (MemoryStream encryptedStream = new MemoryStream()) { using (CryptoStream crypto = new CryptoStream( encryptedStream, encryptor, CryptoStreamMode.Write)) { crypto.Write(data, 0, data.Length); } encrypted = encryptedStream.ToArray(); } Aaaah, so that's what the problem was. The CryptoStream wasn't flushing all it's data to the MemoryStream before it was being read, and closing the stream causes it to flush everything to the backing stream. But why does this cause an error in padding? Cryptographic padding All symmetric encryption algorithms (of which Rijndael is one) operates on fixed block sizes. For Rijndael, the default block size is 16 bytes. This means the input needs to be a multiple of 16 bytes long. If it isn't, then the input is padded to 16 bytes using one of the padding modes. This is only done to the final block of data to be encrypted. CryptoStream has a special method to flush this final block of data - FlushFinalBlock. Calling Stream.Flush() does not flush the final block, as you might expect. Only by closing the stream or explicitly calling FlushFinalBlock is the final block, with any padding, encrypted and written to the backing stream. Without this call, the encrypted data is 16 bytes shorter than it should be. If this final block wasn't written, then the decryption gets to the final 16 bytes of the encrypted data and tries to decrypt it as the final block with padding. The end bytes don't match the padding scheme it's been told to use, therefore it throws an exception stating what is wrong - what the decryptor expects to be padding actually isn't, and so can't be removed from the stream. So, as well as closing the stream before reading the result, an alternative fix to my encryption code is the following: // encrypt the data using a CryptoStream using (var encryptor = rij.CreateEncryptor()) using (MemoryStream encryptedStream = new MemoryStream()) using (CryptoStream crypto = new CryptoStream( encryptedStream, encryptor, CryptoStreamMode.Write)) { crypto.Write(data, 0, data.Length); // explicitly flush the final block of data crypto.FlushFinalBlock(); encrypted = encryptedStream.ToArray(); } Conclusion So, if your padding is invalid, make sure that you close or call FlushFinalBlock on any CryptoStream performing encryption before you access the encrypted data. Flush isn't enough. Only then will the final block be present in the encrypted data, allowing it to be decrypted successfully.

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  • Cloud Fact for Business Managers #3: Where You Data Is, and Who Has Access to It Might Surprise You

    - by yaldahhakim
    Written by: David Krauss While data security and operational risk conversations usually happen around the desk of a CCO/CSO (chief compliance and/or security officer), or perhaps the CFO, since business managers are now selecting cloud providers, they need to be able to at least ask some high-level questions on the topic of risk and compliance.  While the report found that 76% of adopters were motivated to adopt cloud apps because of quick access to software, most of these managers found that after they made a purchase decision their access to exciting new capabilities in the cloud could be hindered due to performance and scalability constraints put forth  by their cloud provider.  If you are going to let your business consume their mission critical business applications as a service, then it’s important to understand who is providing those cloud services and what kind of performance you are going to get.  Different types of departments, companies and industries will all have unique requirements so it’s key to take this also into consideration.   Nothing puts a CEO in a bad mood like a public data breach or finding out the company lost money when customers couldn’t buy a product or service because your cloud service provider had a problem.  With 42% of business managers having seen a data security breach in their department associated directly with the use of cloud applications, this is happening more than you think.   We’ve talked about the importance of being able to avoid information silos through a unified cloud approach and platform.  This is also important when keeping your data safe and secure, and a key conversation to have with your cloud provider.  Your customers want to know that their information is protected when they do business with you, just like you want your own company information protected.   This is really hard to do when each line of business is running different cloud application services managed by different cloud providers, all with different processes and controls.   It only adds to the complexity, and the more complex, the more risky and the chance that something will go wrong. What about compliance? Depending on the cloud provider, it can be difficult at best to understand who has access to your data, and were your data is actually stored.  Add to this multiple cloud providers spanning multiple departments and it becomes very problematic when trying to comply with certain industry and country data security regulations.  With 73% of business managers complaining that having cloud data handled externally by one or more cloud vendors makes it hard for their department to be compliant, this is a big time suck for executives and it puts the organization at risk. Is There A Complete, Integrated, Modern Cloud Out there for Business Executives?If you are a business manager looking to drive faster innovation for your business and want a cloud application that your CIO would approve of, I would encourage you take a look at Oracle Cloud.  It’s everything you want from a SaaS based application, but without compromising on functionality and other modern capabilities like embedded business intelligence, social relationship management (for your entire business), and advanced mobile.  And because Oracle Cloud is built and managed by Oracle, you can be confident that your cloud application services are enterprise-grade.  Over 25 Million users and 10 thousands companies around the globe rely on Oracle Cloud application services everyday – maybe your business should too.  For more information, visit cloud.oracle.com. Additional Resources •    Try it: cloud.oracle.com•    Learn more: http://www.oracle.com/us/corporate/features/complete-cloud/index.html•    Research Report: Cloud for Business Managers: The Good, the Bad, and the Ugly

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  • WPF binding only inside XAML (simple question)

    - by 0xDEAD BEEF
    Why this works <myToolTip:UserControl1> <TextBlock Text="{Binding Path=TestString, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type myToolTip:UserControl1}}}"/> </myToolTip:UserControl1> BUT this does not <myToolTip:UserControl1 x:Name="userControl"> <TextBlock Text="{Binding Path=TestString, ElementName=userControl}"/> </myToolTip:UserControl1> and is there realy no shorter (faster) fay, to acces usercontrols elements?! Sincerely, 0xDEAD BEEF

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