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  • Add Custom Control to DataGridViewCell

    - by Kovscer
    Hello, I create a custom control inherited from Windows.System.Forms.Controls. This is my code of this control: public partial class MonthEventComponent : Control { private Color couleur; private Label labelEvenement; public MonthEventComponent(Color couleur_c, String labelEvenement_c ) { InitializeComponent(); this.couleur = couleur_c; this.labelEvenement.Text = labelEvenement_c; this.labelEvenement.ForeColor = couleur; this.labelEvenement.BackColor = Color.White; this.labelEvenement.TextAlign = ContentAlignment.MiddleLeft; this.labelEvenement.Dock = DockStyle.Fill; this.Controls.Add(labelEvenement); } public MonthEventComponent() { InitializeComponent(); this.couleur = Color.Black; this.labelEvenement = new Label(); this.labelEvenement.ForeColor = couleur; this.labelEvenement.BackColor = Color.White; this.labelEvenement.Text = "Evénement Initialiser"; this.labelEvenement.TextAlign = ContentAlignment.MiddleLeft; this.labelEvenement.Dock = DockStyle.Fill; this.Controls.Add(labelEvenement); } protected override void OnClick(EventArgs e) { base.OnClick(e); MessageBox.Show("Click"); } } I would like to insert this control or multiple of this control on a DataGridViewCell but i don't know how to do this. Thank you in advance for your answer, Best Regards, PS: I'm french, i'm apologize for any can of language errors.

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  • [Django] One single page to create a Parent object and its associated child objects

    - by ahmoo
    Hi all, This is my very first post on this awesome site, from which I have been finding answers to a handful of challenging questions. Kudos to the community! I am new to the Django world, so am hoping to find help from some Django experts here. Thanks in advance. Item model: class Item(models.Model): name = models.CharField(max_length=50) ItemImage model: class ItemImage(models.Model): image = models.ImageField(upload_to=get_unique_filename) item = models.ForeignKey(Item, related_name='images') As you can tell from the model definitions above, every Item object can have many ItemImage objects. My requirements are as followings: A single web page that allows users to create a new Item while uploading the images associated with the Item. The Item and the ItemImages objects should be created in the database all together, when the "Save" button on the page is clicked. I have created a variable in a custom config file, called NUMBER_OF_IMAGES_PER_ITEM. It is based on this variable that the system generates the number of image fields per item. Questions: What should the forms and the template be like? Can ModelForm be used to achieve the requirements? For the view function, what do I need to watch out other than making sure to save Item before ItemImage objects?

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  • Generating all unique crossword puzzle grids

    - by heydenberk
    I want to generate all unique crossword puzzle grids of a certain grid size (4x4 is a good size). All possible puzzles, including non-unique puzzles, are represented by a binary string with the length of the grid area (16 in the case of 4x4), so all possible 4x4 puzzles are represented by the binary forms of all numbers in the range 0 to 2^16. Generating these is easy, but I'm curious if anyone has a good solution for how to programmatically eliminate invalid and duplicate cases. For example, all puzzles with a single column or single row are functionally identical, hence eliminating 7 of those 8 cases. Also, according to crossword puzzle conventions, all squares must be contiguous. I've had success removing all duplicate structures, but my solution took several minutes to execute and probably was not ideal. I'm at something of a loss for how to detect contiguity so if anyone has ideas on this it'd be much appreciated. I'd prefer solutions in python but write in whichever language you prefer. If anyone wants, I can post my python code for generating all grids and removing duplicates, slow as it may be.

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  • App_Themes Not Loading on Initial Load

    - by Jason Heine
    Hello, I have an application where different users can log in via a single portal login. When they log in, if they belong to more than 1 company they have to select the company they belong to. The theme will change if there is a custom theme for that company. Each page my application has inherits a "CustomPage" class Here is the code for the custom page: public class CustomPage : Page { protected void Page_PreInit(object sender, EventArgs e) { if (Globals.Company != null && Directory.Exists(Page.MapPath("~/App_Themes/" + Globals.Company.CompanyName))) { Page.Theme = Globals.Company.CompanyName; } else { Page.Theme = "Default"; } } } When the customer belongs to more than 1 company, and they select the company they belong to, the theme loads just fine. So, the problem I am having is this: If they belong to just 1 company, the company is automatically selected but the theme does not load right away. However, if I refresh the page, the theme loads just fine. Even the default theme will not load. The page has no css at all until I refresh. I am not using forms authentication and the default theme in the web config is "Default" <pages theme="Default"> Any thoughts to what might be going on? If you need clarification on anything, please ask. Thanks!

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  • How can I display a form for set configuration before the main form?

    - by Hamidm
    hello, in my project i have two form's(form1,form2), form1 is configuration form. i want to show Form1 and when we click Button1 then show Form2 and free(Release) Form1. how can to i do this? i use this code. but this project start and then exit automatically.A Friend said because the application message loop never start, and application terminates because main form does not exist. how i can to solve this problem? uses Unit2; {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); begin Application.CreateForm(TForm2, Form2); Release; end; /// program Project1; uses Forms, Unit1 in 'Unit1.pas' {Form1}, Unit2 in 'Unit2.pas' {Form2}; {$R *.res} begin Application.Initialize; Application.MainFormOnTaskbar := True; Form1:= TForm1.Create(Application); Application.Run; end.

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  • Need help INSERT record(s) MySQL DB

    - by JM4
    I have an online form which collects member(s) information and stores it into a very long MySQL database. We allow up to 16 members to enroll at a single time and originally structured the DB to allow such. For example: If 1 Member enrolls, his personal information (first name, last name, address, phone, email) are stored on a single row. If 15 Members enroll (all at once), their personal information are stored in the same single row. The row has information housing columns for all 'possible' inputs. I am trying to consolidate this code and having every nth member that enrolls put onto a new record within the database. I have seen sugestions before for inserting multiple records as such: INSERT INTO tablename VALUES (('$f1name', '$f1address', '$f1phone'), ('$f2name', '$f2address', '$f2phone')... The issue with this is two fold: I do not know how many records are being enrolled from person to person so the only way to make the statement above is to use a loop The information collected from the forms is NOT a single array so I can't loop through one array and have it parse out. My information is collected as individual input fields like such: Member1FirstName, Member1LastName, Member1Phone, Member2Firstname, Member2LastName, Member2Phone... and so on Is it possible to store information in separate rows WITHOUT using a loop (and therefore having to go back and completely restructure my form field names and such (which can't happen due to the way the validation rules are built.)

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  • the possible solution to this design issue??

    - by Sachindra
    I need to know how to fix this issue in the designs of forms.. Getting this in firefox and this in IE... the color is not an issue.. juz need the alignment to be fixed... The code goes like this : <div class="content_form_box7_main"> <div class="content_form_box7_main1"> <input type="text" name="email" value="Comments" class="content_form_box7_inside"/> </div> </div> the style goes like : .content_form_box7_main{ float:left; color:#FFFFFF; padding:5px 0px 2px 0px; width:281px; } .content_form_box7_main1{ float:left; padding:0px 0px 0px 40px; } .content_form_box7_inside{ float:left; background-image:url(images/amcro_contact4.gif); width:206px; height:43px; background-repeat:no-repeat; border:none; background-color:#E0D1B4; vertical-align:top; } apologies if it looks complex ...

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  • selected area to cut an image

    - by Oskar Marciniak
    Hi I would do the selected area to cut an image on picturebox control. I have the following code: using System; using System.Drawing; using System.Windows.Forms; namespace WindowsFormsApplication1 { public partial class Form1 : Form { private Rectangle rect; private Pen p; public Form1() { InitializeComponent(); } private void pictureBox1_Paint(object sender, PaintEventArgs e) { if (this.p == null) this.p = new Pen(Color.FromArgb(100, 200, 200, 200), 5); if (this.rect.Width > 0) e.Graphics.DrawRectangle(this.p, this.rect); } private void pictureBox1_MouseUp(object sender, MouseEventArgs e) { if (e.X < this.rect.X) { this.rect.Width = this.rect.X - e.X; this.rect.X = e.X; } else { this.rect.Width = e.X - this.rect.X; } if (e.Y < this.rect.Y) { this.rect.Height = this.rect.Y - e.Y; this.rect.Y = e.Y; } else { this.rect.Height = e.Y - this.rect.Y; } this.Invalidate(this.rect); } private void pictureBox1_MouseDown(object sender, MouseEventArgs e) { this.rect.X = e.X; this.rect.Y = e.Y; } } } It returns an error here: Application.Run(new Form1()); Why? thanks for all replies ;p

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  • How do i use Form.ShowDialog?

    - by Daniel Lip
    private void button2_Click(object sender, EventArgs e) { ChangeLink cl = new ChangeLink(); // Show testDialog as a modal dialog and determine if DialogResult = OK. if (cl.ShowDialog() == DialogResult.OK) { // Read the contents of testDialog's TextBox. // cl.AcceptButton.DialogResult = DialogResult.OK; this.label4.Text = cl.textBox1Text; } else { this.label4.Text = "Cancelled"; } cl.Dispose(); } When i click the button i see the new Form and the textBox1 in the new Form and i can type in the textBox1 something but i dont see anywhere an OK or CANCEL buttons. Should i add them manualy in the new Form designer ? And how to use them then ? This is the code in my new Form what i wanted to do is to type something in the new Form textBox1 and pass the text in the textBox1 to Form1 label4. using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace GatherLinks { public partial class ChangeLink : Form { public ChangeLink() { InitializeComponent(); } public string textBox1Text { get { return textBox1Text = textBox1.Text; } set { } } } } So where are the OK and CANCEL buttons of the Form.ShowDialog ?

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  • Application crash

    - by Ovi
    I have an application that, as any other app, crashes once in a while for various reasons. When it crashes, it does it gracefully and the users get a nice message of the crash. At the same time the crash is reported on the server for analysis so it can be fixed in future versions. However, I would like that the app keeps working through the crash. What that means is that I would like to run the forms in an 'atomic' way. If it goes down, it doesn't take down the entire app. The users should just need to start over the work done with the particular form. Is this something that can be done through architecture? Or maybe the new framework versions has something to aid this? The application is build mostly in C# over the 3.5 framework, but it also uses some external references, some COMs and web service references. I am not interested in an answer: 'well fix the crashes'. Me and my team and the testing team are working round the clock for this.

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  • Should Service Depend on Many Repositories, or Break Them Up?

    - by Josh Pollard
    I'm using a repository pattern for my data access. So I basically have a repository per table/class. My UI currently uses service classes to actually get things done, and these service classes wrap, and therefore depend on repositories. In many cases my services are only dependent upon one or two repositories, so things aren't too crazy. Unfortunately, one of my forms in the UI expects the user to enter data that will span five different tables. For this form I made a single service class that depends upon five repositories. Then the methods within the service for saving and loading the data call the appropriate methods on all of the corresponding repositories. As you can imagine, the save and load methods in this service are really big. Also, unit testing this service is getting really difficult because I have to setup so many fake repositories. Would it have been a better choice to break this single service apart into a few smaller services? It would put more code at the UI layer, but would make the services smaller and more testable.

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  • What 20 Lines (or less) of code did you find really useful?

    - by Ygam
    You can share your code or other's code. Here's a snippet from an array function in Kohana: public static function rotate($source_array, $keep_keys = TRUE) { $new_array = array(); foreach ($source_array as $key => $value) { $value = ($keep_keys === TRUE) ? $value : array_values($value); foreach ($value as $k => $v) { $new_array[$k][$key] = $v; } } return $new_array; } It was helpful when I was uploading multiple images using multiple file upload forms. It turned this array array('images' => array( 'name' => array( 0 => 'img1', 1 => 'img0', 2 =>'img2' ), 'error' => array( 0 => '', 1 => '', 2 => '' into : array('images' => array( 0 => array( 'name' => 'img1' 'error' => '' ),//rest goes here How about you? What 20 or less lines of code did you find useful?

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  • ASP.NET MVC: How to show value in a label from selected Drop Down List item?

    - by Lillie
    Hi! I'm trying to show a value of selected Drop Down List item in a label. I managed to make this work with Web Forms but with MVC I'm totally lost. My Index looks like this: [...] <% using (Html.BeginForm()) { %> <table> <tr> <td>Processor</td> <td><%= Html.DropDownList("lstProcessor1", new SelectList((IEnumerable)ViewData["Processor1List"], "product_price", "product_description")) %></td> </tr> <tr> <td>Total Amount</td> <td>0,00 €</td> </tr> </table> <input type="submit" value="Submit" /> <% } %> [...] And my HomeController starts with: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Mvc.Ajax; using MvcApplication1.Models; namespace MvcApplication1.Controllers { [HandleError] public class HomeController : Controller { // Connect database DB50DataContext _ctx = new DB50DataContext(); // GET: /Home/ public ActionResult Index() { // Search: Processors var products = from prod in _ctx.products where prod.product_searchcode == "processor1" select prod; ViewData["Processort1List"] = products; return View(); } I would like the product_price to show on the second line of the table, where it now says 0,00 €. It should also update the price automatically when the item from the Drop Down List is changed. I guess I should use JQuery but I have no idea how. Could someone please give me some tips how to do this?

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  • Ajax to read from form

    - by Edwin
    Hello, I'm writing a store system for my game, it worked quite well until I found out that it only takes the amount of first entered Item. function pbuy(buyitem) { var amountc = "amount-"+buyitem, var amount = $("#"+amountc+"").val(); $.ajax({ type: "POST", url: "store2.php", data: "buyitem="+ buyitem+"&amount="+amount, success: function(resp){ document.getElementById('ajaxDiv').innerHTML = resp; }, error: function(e){ alert('Error: ' + e); } }); } I'm trying to give it it the Id of the form like so: function pbuy(buyitem) { var amountc = "amount-"+buyitem, var amount = $("#"+amountc+"").val(); But nothing happens. The code the creation of the forms is: <tr> <td class='items' width='80%' align='center' valign='top'><?PHP echo $itemstore->itemname;?> </td> <td width="20%"> Price:<?PHP echo $itemstore->newprice;?> <form method="post"> <input type='text' id='amount-<?PHP echo $row;?>)' /> <input name="itembid" type="button" onclick="pbuy(<?PHP echo $row;?>)" value="Buy" /></form></td> </tr> If I hardcode the amount in the ajax function it all runs fine like it should.

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  • How to show and update popup in 1 thread

    - by user3713986
    I have 1 app. 2 Forms are MainFrm and PopupFrm, 1 thread to update some information to PopupFrm Now to update PopupFrm i use: In MainFrm.cs private PopupFrm mypop; MainFrm() { .... PopupFrm mypop= new PopupFrm(); mypop.Show(); } MyThread() { Process GetData();... mypop.Update(); ... } In PopupFrm.cs public void Update() { this.Invoke((MethodInvoker)delegate .... }); } Problem here that mypopup alway display when MainFrm display (Start application not when has data to update). So i change MainFrm.cs to : private PopupFrm mypop; private bool firstdisplay=false; MainFrm() { .... PopupFrm mypop= new PopupFrm(); //mypop.Show(); } MyThread() { Process GetData();... if(!firstdisplay) { mypop.Show(); firstdisplay=true; } mypop.Update(); ... } But it can not update Popup GUI. So how can i fix this issue ? Thanks all.

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  • Databound Label text displays old data upon save. Re-open record and data is correct?

    - by Mike Hestness
    I have a windows forms application. I have a main form and I have a button on this form to set a "Qualified" date/time stamp. I have a Databound label control that I set the value when the user clicks the button. This date/time stamp is working as far as displaying but when you click the save button it either shows blank or the previous date/time. If you then then close the record and re-open it the new date/time value is displayed so the data is getting to the database it's just not persisting in the dataset as new data?? Not sure why the databinding isn't refreshing the value. I have noticed this behavior even if I use a textbox, same thing if I do it programatically. If I manually type in a value it persists?? Here is the code I'm using in the click event of my button: string result = string.Empty; string jobOrderID = UnitOfWork.MasterDSBS.MJOBO[0].JC_IDNO.ToString(); string timeNow = DateTime.Now.ToString(); //Call Web service to make the update RadServices.Service1 rsWeb = new RadServices.Service1(); result = rsWeb.SetQualifiedDate(timeNow, jobOrderID ); //Changed the qualified label text. _btnQualify.Text = "Qualified"; rlQualifiedDate.Text = timeNow;

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  • Detect some conflictive characters in a string with javascript

    - by FranQ
    Hello. I have a file input in a form that uploads a mp3 file, but I´d like to detect conflictive characters to my system in the filename, like ! @ or any other. All codes I´ve found replace these characters, but I just want to detect them to alert the user. I think it will be easy with regular expressions, but I dont know about them. I´m using jquery/javascript. Thanks in advance for your help Edit to improve my problem description: I´m working in a CodeIgniter application that allows user to upload mp3 files to the server. I use jQuery to manage client side forms. The CI upload class converts spaces in the file name to underscores and everything works. But testing the application I uploaded a mp3 file with a (!) in the name, and I got troubles with it. I just want to insert a javascript conditional before the file is uploaded to evaluate if the user´s filename contains a (!) (or any other I´d like to add later) to ask for the file to be renamed if it does.

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  • xml parsing in php issue

    - by jan
    I have this code/function method as part of a class in php: function defaulthome(){ $fp = null; $err =''; $xml_parser = xml_parser_create(); $rss_parser = new Rssparser(); xml_set_object($xml_parser,&$rss_parser); xml_set_element_handler($xml_parser, "startElement", "endElement"); xml_set_character_data_handler($xml_parser, "characterData"); $fp = fopen("http://gulfnews.com/cmlink/business-rss-feed-1.446098?localLinksEnabled=false","r"); if(!$fp) $err = "Error reading RSS data."; else { $count = 0; while ($data = fread($fp, 4096) && $count<10) { xml_parse($xml_parser, $data, feof($fp)) or $err=xml_error_string(xml_get_error_code($xml_parser)); $count++; } } fclose($fp); xml_parser_free($xml_parser); $content_sect2 = $this->tnjn->render('forms/landlords_prompt.phtml'); $context = array('content1_title'=>'Welcome to my website','content1_article'=>"test article", 'feeds'=>$err); $output = $this->tnjn->render("default.phtml", $context); return $output; } I don't get results and the error i have is empty document! Does anyone know which part of the code is the problem? Thanks very much !!

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  • Timer not beginning from 00:00

    - by studentProgrammer
    I have a Game in which there is a timer involved. For each two minutes that passes a new round between different players begins. So, I have a text box starting from 00:00 and changes each second until it is equal to 02:00. Now, I want to save the state of the game in the middle of a round if the user closes the form. What I need to do is that upon loading, the textbox starts at the time that the user left the game the last time and continue up till 02:00 normally. How can I do this? This is what I have until now where Tournament is the Form public Tournament() { _timer = new System.Windows.Forms.Timer(); _timer.Interval = 1000; _timer.Tick += Timer_Tick; _myDateTime = DateTime.Now; newDate = new DateTime(); newDate = newDate.AddMinutes(2.00); _timer.Start(); InitializeComponent(); } void Timer_Tick(object sender, EventArgs e) { var diff = DateTime.Now.Subtract(_myDateTime); this.textBox1.Text = diff.ToString(@"mm\:ss"); DateTime dt = Convert.ToDateTime(diff.ToString()); if (newDate.Minute == dt.Minute) { _timer.Stop(); _myDateTime = DateTime.Now; displayPointsOrResults(); this.textBox1.Text = diff.ToString(@"mm\:ss"); } } In my LoadGame method: where timePassed is what I have written in the text box string[] splitted6 = timePassed.Split(':'); if (splitted6[0] == "00") { int remainingTime = 120 - Convert.ToInt32(splitted6[1]); DateTime time = DateTime.Now.Date; time = time.AddMinutes(remainingTime); _myDateTime = time; } else { int leftTime = Convert.ToInt32(splitted[0].Trim('0') + splitted[1]); int remainingTime = 120 - leftTime; DateTime time = DateTime.Now.Date; time = time.AddMinutes(remainingTime); _myDateTime = time; }

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  • MVC and Checkboxes...leaves a bit to be desired

    - by Josh
    Here is my problem. I have a list of models that are displayed to the user. On the left is a checkbox for each model to indicate that the user wants to choose this model (in this case, we're building products a user can add to their shopping cart). The model has no concept of being chosen...it strictly has information about the product in question. I've talked with a few other developers after having gone through and the best I could come up with is getting the formcollection and string parsing the key values to determine whether the checkbox is checked or not. This doesn't seem ideal. I was thinking there would be something more strongly bound, but I can't figure out a way to do it. I tried creating another model that had a boolean property to represent being checked and a property of the model and passing a list of that model type to the view and creating a ActionResult on the controller that accepts a list of the new model / checked property, but it comes back null. Am I just thinking too much like web forms and should just continue on with parsing checkbox values?

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  • Spring JMS MQJE001: Completion Code '2', Reason '2042'.

    - by john
    My setup is Spring 3 JMS, MVC + Websphere MQ + Websphere 7 <!-- this is the Message Driven POJO (MDP) --> <bean id="messageListener" class="com.SomeListener" /> <!-- and this is the message listener container --> <bean id="jmsContainer" class="org.springframework.jms.listener.DefaultMessageListenerContainer"> <property name="connectionFactory" ref="xxxCF" /> <property name="destination" ref="someQueue" /> <property name="messageListener" ref="messageListener" /> </bean> When I start up the server, the listener seems to start correctly since it receives the messages that are on the queue as I put them. However, once I run any simple controller/action that doesn't even have anything to do with JMS it gives me the message below over and over... DefaultMessag W org.springframework.jms.listener.DefaultMessageListenerContainer handleListenerSetupFailure Setup of JMS message listener invoker failed for destination 'queue:///ABCDEF.EFF.OUT?persistence=-1' - trying to recover. Cause: MQJMS2008: failed to open MQ queue ''.; nested exception is com.ibm.mq.MQException: MQJE001: Completion Code '2', Reason '2042'. DefaultMessag I org.springframework.jms.listener.DefaultMessageListenerContainer refreshConnectionUntilSuccessful Successfully refreshed JMS Connection ConnectionEve W J2CA0206W: A connection error occurred. To help determine the problem, enable the Diagnose Connection Usage option on the Connection Factory or Data Source. ConnectionEve A J2CA0056I: The Connection Manager received a fatal connection error from the Resource Adapter for resource JMS$XXXQCF$JMSManagedConnection@2. The exception is: javax.jms.JMSException: MQJMS2008: failed to open MQ queue ''. ConnectionEve W J2CA0206W: A connection error occurred. To help determine the problem, enable the Diagnose Connection Usage option on the Connection Factory or Data Source. ConnectionEve A J2CA0056I: The Connection Manager received a fatal connection error from the Resource Adapter for resource jms/XXXQCF. The exception is: javax.jms.JMSException: MQJMS2008: failed to open MQ queue ''. The original listener seems to be still running correctly...but I think the controller is somehow triggering off another connection? Does anyone know what I should check for or what might cause this issue? thanks

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  • Blocking access to websites with objective-C / root privileges in objective-C

    - by kvaruni
    I am writing a program in Objective-C (XCode 3.2, on Snow Leopard) that is capable of either selectively blocking certain sites for a duration or only allow certain sites (and thus block all others) for a duration. The reasoning behind this program is rather simple. I tend to get distracted when I have full internet access, but I do need internet access during my working hours to get to a number of work-related websites. Clearly, this is not a permanent block, but only helps me to focus whenever I find myself wandering a bit too much. At the moment, I am using a Unix script that is called via AppleScript to obtain Administrator permissions. It then activates a number of ipfw rules and clears those after a specific duration to restore full internet access. Simple and effective, but since I am running as a standard user, it gets cumbersome to enter my administrator password each and every time I want to go "offline". Furthermore, this is a great opportunity to learn to work with XCode and Objective-C. At the moment, everything works as expected, minus the actual blocking. I can add a number of sites in a list, specify whether or not I want to block or allow these websites and I can "start" the blocking by specifying a time until which I want to stay "offline". However, I find it hard to obtain clear information on how I can run a privileged Unix command from Objective-C. Ideally, I would like to be able to store information with respect to the Administrator account into the Keychain to use these later on, so that I can simply move into "offline" mode with the convenience of clicking a button. Even more ideally, there might be some class in Objective-C with which I can block access to some/all websites for this particular user without needing to rely on privileged Unix commands. A third possibility is in starting this program with root permissions and the reducing the permissions until I need them, but since this is a GUI application that is nested in the menu bar of OS X, the results are rather awkward and getting it to run each and every time with root permission is no easy task. Anyone who can offer me some pointers or advice? Please, no security-warnings, I am fully aware that what I want to do is a potential security threat.

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  • MVVM load data during or after ViewModel construction?

    - by mkmurray
    My generic question is as the title states, is it best to load data during ViewModel construction or afterward through some Loaded event handling? I'm guessing the answer is after construction via some Loaded event handling, but I'm wondering how that is most cleanly coordinated between ViewModel and View? Here's more details about my situation and the particular problem I'm trying to solve: I am using the MVVM Light framework as well as Unity for DI. I have some nested Views, each bound to a corresponding ViewModel. The ViewModels are bound to each View's root control DataContext via the ViewModelLocator idea that Laurent Bugnion has put into MVVM Light. This allows for finding ViewModels via a static resource and for controlling the lifetime of ViewModels via a Dependency Injection framework, in this case Unity. It also allows for Expression Blend to see everything in regard to ViewModels and how to bind them. So anyway, I've got a parent View that has a ComboBox databound to an ObservableCollection in its ViewModel. The ComboBox's SelectedItem is also bound (two-way) to a property on the ViewModel. When the selection of the ComboBox changes, this is to trigger updates in other views and subviews. Currently I am accomplishing this via the Messaging system that is found in MVVM Light. This is all working great and as expected when you choose different items in the ComboBox. However, the ViewModel is getting its data during construction time via a series of initializing method calls. This seems to only be a problem if I want to control what the initial SelectedItem of the ComboBox is. Using MVVM Light's messaging system, I currently have it set up where the setter of the ViewModel's SelectedItem property is the one broadcasting the update and the other interested ViewModels register for the message in their constructors. It appears I am currently trying to set the SelectedItem via the ViewModel at construction time, which hasn't allowed sub-ViewModels to be constructed and register yet. What would be the cleanest way to coordinate the data load and initial setting of SelectedItem within the ViewModel? I really want to stick with putting as little in the View's code-behind as is reasonable. I think I just need a way for the ViewModel to know when stuff has Loaded and that it can then continue to load the data and finalize the setup phase. Thanks in advance for your responses.

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  • Making a ViewFlipper like the Home Screen using MotionEvent.ACTION_MOVE

    - by DJTripleThreat
    Ok I have a ViewFlipper with three LinearLayouts nested inside it. It defaults to showing the first one. This code: // Assumptions in my Activity class: // oldTouchValue is a float // vf is my view flipper @Override public boolean onTouchEvent(MotionEvent touchEvent) { switch (touchEvent.getAction()) { case MotionEvent.ACTION_DOWN: { oldTouchValue = touchEvent.getX(); break; } case MotionEvent.ACTION_UP: { float currentX = touchEvent.getX(); if (oldTouchValue < currentX) { vf.setInAnimation(AnimationHelper.inFromLeftAnimation()); vf.setOutAnimation(AnimationHelper.outToRightAnimation()); vf.showNext(); } if (oldTouchValue > currentX) { vf.setInAnimation(AnimationHelper.inFromRightAnimation()); vf.setOutAnimation(AnimationHelper.outToLeftAnimation()); vf.showPrevious(); } break; } case MotionEvent.ACTION_MOVE: { // TODO: Some code to make the ViewFlipper // act like the home screen. break; } } return false; } public static class AnimationHelper { public static Animation inFromRightAnimation() { Animation inFromRight = new TranslateAnimation( Animation.RELATIVE_TO_PARENT, +1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f); inFromRight.setDuration(350); inFromRight.setInterpolator(new AccelerateInterpolator()); return inFromRight; } public static Animation outToLeftAnimation() { Animation outtoLeft = new TranslateAnimation( Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, -1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f); outtoLeft.setDuration(350); outtoLeft.setInterpolator(new AccelerateInterpolator()); return outtoLeft; } // for the next movement public static Animation inFromLeftAnimation() { Animation inFromLeft = new TranslateAnimation( Animation.RELATIVE_TO_PARENT, -1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f); inFromLeft.setDuration(350); inFromLeft.setInterpolator(new AccelerateInterpolator()); return inFromLeft; } public static Animation outToRightAnimation() { Animation outtoRight = new TranslateAnimation( Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, +1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f); outtoRight.setDuration(350); outtoRight.setInterpolator(new AccelerateInterpolator()); return outtoRight; } } ... handles the view flipping but the animations are very "on/off". I'm wondering if someone can help me out with the last part. Assuming that I can access the LinearLayouts, is there a way where I can set the position of the layouts based on deltaX and deltaY? Someone gave me this link: https://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/view/animation/TranslateAnimation.java;h=d2ff754ac327dda0fe35e610752abb78904fbb66;hb=HEAD and said I should refer to the applyTransformation method for hints on how to do this but I don't know how to repeat this same behavior.

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  • MSDTC - Communication with the underlying transaction manager has failed (Firewall open, MSDTC netwo

    - by SocialAddict
    I'm having problems with my ASP.NET web forms system. It worked on our test server but now we are putting it live one of the servers is within a DMZ and the SQL server is outside of that (on our network still though - although a different subnet) I have open up the firewall completely between these two boxes to see if that was the issue and it still gives the error message "Communication with the underlying transaction manager has failed" whenever we try and use the "TransactionScope". We can access the data for retrieval it's just transactions that break it. We have also used msdtc ping to test the connection and with the amendments on the firewall that pings successfully, but the same error occurs! How do i resolve this error? Any help would be great as we have a system to go live today. Panic :) Edit: I have created a more straightforward test page with a transaction as below and this works fine. Could a nested transaction cause this kind of error and if so why would this only cause an issue when using a live box in a dmz with a firewall? AuditRepository auditRepository = new AuditRepository(); try { using (TransactionScope scope = new TransactionScope()) { auditRepository.Add(DateTime.Now, 1, "TEST-TRANSACTIONS#1", 1); auditRepository.Save(); auditRepository.Add(DateTime.Now, 1, "TEST-TRANSACTIONS#2", 1); auditRepository.Save(); scope.Complete(); } } catch (Exception ex) { Response.Write("Test Error For Transaction: " + ex.Message + "<br />" + ex.StackTrace); } This is the ErrorStack we are getting when the problem occurs: at System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken) at System.Transactions.TransactionStatePSPEOperation.PSPEPromote(InternalTransaction tx) at System.Transactions.TransactionStateDelegatedBase.EnterState(InternalTransaction tx) at System.Transactions.EnlistableStates.Promote(InternalTransaction tx) at System.Transactions.Transaction.Promote() at System.Transactions.TransactionInterop.ConvertToOletxTransaction(Transaction transaction) at System.Transactions.TransactionInterop.GetExportCookie(Transaction transaction, Byte[] whereabouts) at System.Data.SqlClient.SqlInternalConnection.GetTransactionCookie(Transaction transaction, Byte[] whereAbouts) at System.Data.SqlClient.SqlInternalConnection.EnlistNonNull(Transaction tx) at System.Data.SqlClient.SqlInternalConnection.Enlist(Transaction tx) at System.Data.SqlClient.SqlInternalConnectionTds.Activate(Transaction transaction) at System.Data.ProviderBase.DbConnectionInternal.ActivateConnection(Transaction transaction) at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) at System.Data.SqlClient.SqlConnection.Open() at System.Data.Linq.SqlClient.SqlConnectionManager.UseConnection(IConnectionUser user) at System.Data.Linq.SqlClient.SqlProvider.get_IsSqlCe() at System.Data.Linq.SqlClient.SqlProvider.InitializeProviderMode() at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) at System.Data.Linq.ChangeDirector.StandardChangeDirector.DynamicInsert(TrackedObject item) at System.Data.Linq.ChangeDirector.StandardChangeDirector.Insert(TrackedObject item) at System.Data.Linq.ChangeProcessor.SubmitChanges(ConflictMode failureMode) at System.Data.Linq.DataContext.SubmitChanges(ConflictMode failureMode) at System.Data.Linq.DataContext.SubmitChanges() at RegBook.classes.DbBase.Save() at RegBook.usercontrols.BookingProcess.confirmBookingButton_Click(Object sender, EventArgs e)

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