Search Results

Search found 9444 results on 378 pages for 'items'.

Page 297/378 | < Previous Page | 293 294 295 296 297 298 299 300 301 302 303 304  | Next Page >

  • Dynamic controls not creating with RSS reader function

    - by TuxMeister
    Hello, I am working on a test project for an RSS reader. I am using Chilkat's module for .NET 3.5. What I am trying to do is this: For each item in the RSS feed, I want to dynamically create some controls (labels) that contain stuff like the title, the link and the publication date. The problem is that only the first control comes up "rssTitle", but not the rest and it's definitely not creating the rest, nor cycling through the RSS items. Any ideas where I'm wrong in my code? Imports Chilkat Public Class Form1 Dim rss As New Chilkat.Rss Dim success As Boolean Dim rssTitle As New Label Dim rssLink As New Label Dim rssPubDate As New Label Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click success = rss.DownloadRss("http://www.engadget.com/rss.xml") If success <> True Then MessageBox.Show(rss.LastErrorText) Exit Sub End If Dim rssChannel As Chilkat.Rss rssChannel = rss.GetChannel(0) If rssChannel Is Nothing Then MessageBox.Show("No channel found.") Exit Sub End If Dim numItems As Long numItems = rssChannel.NumItems Dim i As Long For i = 0 To numItems - 1 Dim rssItem As Chilkat.Rss rssItem = rssChannel.GetItem(i) Me.Controls.Add(rssTitle) With rssTitle .Name = "rssTitle" & Me.Controls.Count.ToString + 1 .Text = "Title: " & rssItem.GetString("title") .Left = 12 .Top = 12 End With Me.Controls.Add(rssLink) With rssLink .Name = "rssLink" & Me.Controls.Count.ToString + 1 .Text = "Link: " & rssItem.GetString("link") .Left = 12 .Top = 12 End With Me.Controls.Add(rssPubDate) With rssPubDate .Name = "rssPubDate" & Me.Controls.Count.ToString + 1 .Text = "Pub date: " & rssItem.GetString("pubDate") .Left = 12 .Top = 12 End With Next End Sub End Class I'm grateful for any help. Thanks!

    Read the article

  • Setting ItemTemplate based on CheckBox value

    - by ph0enix
    I have a DataTemplate which contains a CheckBox and ListBox. When the CheckBox is checked, I want to change the ItemTemplate property on the ListBox to change the appearance of each item. Right now, it looks like this: <DataTemplate DataType={x:Type MyViewModel}> <DockPanel> <CheckBox DockPanel.Dock="Bottom" Content="Show Details" HorizontalAlignment="Right" IsChecked="{Binding ShowDetails}" Margin="0 5 10 5" /> <ListBox ItemsSource="{Binding Items}" ItemTemplate="{StaticResource SimpleItemTemplate}" Margin="10 0 10 5"> <ListBox.Triggers> <DataTrigger Binding="{Binding ShowDetails}" Value="True"> <Setter Property="ItemTemplate" Value="{StaticResource DetailedItemTemplate}" /> </DataTrigger> </ListBox.Triggers> </ListBox> </DockPanel> </DataTemplate> However, when I try to compile, I get the following error messages: Value 'ItemTemplate' cannot be assigned to property 'Property'. Invalid PropertyDescriptor value. and Cannot find the static member 'ItemTemplateProperty' on the type 'ContentPresenter'. I'm still fairly new to WPF, so perhaps there is something I'm not quite understanding?

    Read the article

  • recursive delete trigger and ON DELETE CASCADE contraints are not deleting everything

    - by bitbonk
    I have a very simple datamodel that represents a tree structure: The RootEntity is the root of such a tree, it can contain children of type ContainerEntity and of type AtomEntity. The type ContainerEntity again can contain children of type ContainerEntity and of type AtomEntity but can not contain children of type RootEntity. Children are referenced in a well known order. The DB model for this is below. My problem now is that when I delete a RootEntity I want all children to be deleted recursively. I have create foreign key with CASCADE DELETE and two delete triggers for this. But it is not deleting everything, it always leaves some items in the ContainerEntity, AtomEntity, ContainerEntity_Children and AtomEntity_Children tables. Seemling beginning with the recursionlevel of 3. CREATE TABLE RootEntity ( Id UNIQUEIDENTIFIER NOT NULL, Name VARCHAR(500) NOT NULL, CONSTRAINT PK_RootEntity PRIMARY KEY NONCLUSTERED (Id), ); CREATE TABLE ContainerEntity ( Id UNIQUEIDENTIFIER NOT NULL, Name VARCHAR(500) NOT NULL, CONSTRAINT PK_ContainerEntity PRIMARY KEY NONCLUSTERED (Id), ); CREATE TABLE AtomEntity ( Id UNIQUEIDENTIFIER NOT NULL, Name VARCHAR(500) NOT NULL, CONSTRAINT PK_AtomEntity PRIMARY KEY NONCLUSTERED (Id), ); CREATE TABLE RootEntity_Children ( ParentId UNIQUEIDENTIFIER NOT NULL, OrderIndex INT NOT NULL, ChildContainerEntityId UNIQUEIDENTIFIER NULL, ChildAtomEntityId UNIQUEIDENTIFIER NULL, ChildIsContainerEntity BIT NOT NULL, CONSTRAINT PK_RootEntity_Children PRIMARY KEY NONCLUSTERED (ParentId, OrderIndex), -- foreign key to parent RootEntity CONSTRAINT FK_RootEntiry_Children__RootEntity FOREIGN KEY (ParentId) REFERENCES RootEntity (Id) ON DELETE CASCADE, -- foreign key to referenced (child) ContainerEntity CONSTRAINT FK_RootEntiry_Children__ContainerEntity FOREIGN KEY (ChildContainerEntityId) REFERENCES ContainerEntity (Id) ON DELETE CASCADE, -- foreign key to referenced (child) AtomEntity CONSTRAINT FK_RootEntiry_Children__AtomEntity FOREIGN KEY (ChildAtomEntityId) REFERENCES AtomEntity (Id) ON DELETE CASCADE, ); CREATE TABLE ContainerEntity_Children ( ParentId UNIQUEIDENTIFIER NOT NULL, OrderIndex INT NOT NULL, ChildContainerEntityId UNIQUEIDENTIFIER NULL, ChildAtomEntityId UNIQUEIDENTIFIER NULL, ChildIsContainerEntity BIT NOT NULL, CONSTRAINT PK_ContainerEntity_Children PRIMARY KEY NONCLUSTERED (ParentId, OrderIndex), -- foreign key to parent ContainerEntity CONSTRAINT FK_ContainerEntity_Children__RootEntity FOREIGN KEY (ParentId) REFERENCES ContainerEntity (Id) ON DELETE CASCADE, -- foreign key to referenced (child) ContainerEntity CONSTRAINT FK_ContainerEntity_Children__ContainerEntity FOREIGN KEY (ChildContainerEntityId) REFERENCES ContainerEntity (Id) ON DELETE CASCADE, -- foreign key to referenced (child) AtomEntity CONSTRAINT FK_ContainerEntity_Children__AtomEntity FOREIGN KEY (ChildAtomEntityId) REFERENCES AtomEntity (Id) ON DELETE CASCADE, ); CREATE TRIGGER Delete_RootEntity_Children ON RootEntity_Children FOR DELETE AS DELETE FROM ContainerEntity WHERE Id IN (SELECT ChildContainerEntityId FROM deleted) DELETE FROM AtomEntity WHERE Id IN (SELECT ChildAtomEntityId FROM deleted) GO CREATE TRIGGER Delete_ContainerEntiy_Children ON ContainerEntity_Children FOR DELETE AS DELETE FROM ContainerEntity WHERE Id IN (SELECT ChildContainerEntityId FROM deleted) DELETE FROM AtomEntity WHERE Id IN (SELECT ChildAtomEntityId FROM deleted) GO

    Read the article

  • optimize query: get al votes from user's item

    - by Toni Michel Caubet
    hi there! i did it my way because i'm very bad getting results from two tables... Basically, first i get all the id items that correspond to the user, and then i calculate the ratings of each item. But, there is two different types of object item, so i do this 2 times: show you: function votos_usuario($id){ $previa = "SELECT id FROM preguntas WHERE id_usuario = '$id'"; $r_previo = mysql_query($previa); $ids_p = '0, '; while($items_previos = mysql_fetch_array($r_previo)){ $ids_p .= $items_previos['id'].", "; //echo "ids pregunta usuario: ".$items_previos['id']."<br>"; } $ids = substr($ids_p,0,-2); //echo $ids; $consulta = "SELECT valor FROM votos_pregunta WHERE id_pregunta IN ( $ids )"; //echo $consulta; $resultado = mysql_query($consulta); $votos_preguntas = 0; while($voto = mysql_fetch_array($resultado)){ $votos_preguntas = $votos_preguntas + $voto['valor']; } $previa_r = "SELECT id FROM recetas WHERE id_usuario = '$id'"; $r_previo_r = mysql_query($previa_r); $ids_r = '0, '; while($items_previos_r = mysql_fetch_array($r_previo_r)){ $ids_r .= $items_previos_r['id'].", "; //echo "ids pregunta usuario: ".$items_previos['id']."<br>"; } $ids = substr($ids_r,0,-2); $consulta_b = "SELECT valor FROM votos_receta WHERE id_receta IN ( $ids )"; //echo $consulta; $resultado_b = mysql_query($consulta_b); $votos_recetas = 0; while($voto_r = mysql_fetch_array($resultado_b)){ $votos_recetas = $votos_recetas + $voto_r['valor']; } $total = $votos_preguntas + $votos_recetas; return $total; } As you can si this is two much.. O(n^2) Feel like thinking? thanks!

    Read the article

  • EAV Database Sheme

    - by GLO
    Hello Stackoverflow comunity! I believe that my question has to do with all db guru here! Do you know the EAV DB Scheme ( http://en.wikipedia.org/wiki/Entity-attribute-value_model ) and what they say about the performing of this model. I wonder, If I break this model into smaller tables what the result is? Let's talk about it. I have a db with more that 100K records. A lot of categories and many items ( with different properties per category ) Everything is stored in a EAV. If I try to break this scheme and create for any category a unique table is something that will I have to avoid? Yes, I know that probably I'll have a lot of tables and I'll need to ALTER them if I want to add an extra field, BUT is this so wrong? I have also read that as many tables I have, the db will be populate with more files and this isn't good for any filesystem. Any suggestion? Thank you!

    Read the article

  • CSS - Class hierarchies???

    - by ClarkeyBoy
    Hi, I have a site with a customer front end, which has a catalogue, homepage, contact page, about us page and so on. There is also an administration front end. I would like to implement a kind of hierarchy where any elements within an element with class "admin" will inherit properties set in the admin stylesheet and anything else inherits from the customer stylesheet. The purpose of this is so that admin can login on the admin front end, where they have access to lots of advanced stuff, but they can also navigate to the customer front end where they can execute basic tasks (such as hiding catalogue items, running a debug script if a customer reports an issue and so on). I would like all the admin tools on the customer front end to have properties taken from the admin stylesheet instead of the customer one - this will change the background colour and stuff. Is there any easy way to set up like namespaces to make things simpler, for example: .admin { .list { .list-subtitle { } .list-item { } } a { } } .customer { .list { .list-subtitle { } .list-item { } } a { } } I know it can be like: .admin .list {} .admin .list .list-item {} .admin a I just dont want to have to keep putting .admin all the time. Does anyone have any suggestions on how I could do this? I suppose I could write a .net class which sets this up and writes a stylesheet according to whats put into it, but then I would not be able to read the styles so easily add there would be all sorts of like Classes.Add(blah) and so on. Thanks in advance for any replies... Regards, Richard

    Read the article

  • Using jQuery delay() with separate elements

    - by boomturn
    I want to fake a simple animation on page load by sequentially revealing several pngs, each appearing instantly but with unique, precisely timed delay before the next one. Using the latest version of jQuery (1.4.2 at writing), which provides a delay method. My first (braindead) impulse was: $('#image1').show('fast').delay(800); $('#image2').show('fast').delay(1200); $('#image3').show('fast'); Of course all come up simultaneously. jQuery doc examples refer to a single item being chained, not handling multiple items. OK... try again using nested callbacks from show(): $('#image1').show('fast', function() { $('#image2').show('fast', function() { $('#image3').show('fast', function() { }); }); }); Looks ugly (imagine doing 10, also wonder what processor hit would be) but hey, it works sequentially! Without delay though. So... chain delay() after show() using a callback function from it (not even sure if it supports one): $('#image1').show('fast').delay(800, function() { $('#image2').show('fast').delay(1200, function() { $('#image3').show('fast'); }); }); Hm. Opposite result of what I thought might happen: the callback works, but still no delay. So... should I be using some combination of queue and delay instead of nested callbacks? jQuery doc examples for queue again only use one element for example. Guessing this would involve using a custom queue, but am uncertain how to implement this. Or maybe I'm missing a simple way? (For a simple problem!)

    Read the article

  • How can I make an AdvancedDataGrid re-display its labels when the results of the labelFunction chang

    - by Chris R
    I have an AdvancedDataGrid with a custom label function whose value can change based on other form status (specifically, there's a drop down to choose the time display format for some columns). Right now, I have this labelFunction: internal function formatColumnTime(item: Object, column: AdvancedDataGridColumn): String { var seconds: Number = item[column.dataField]; return timeFormat.selectedItem.labelFunction(seconds); } internal function formatTimeAsInterval(time: Number): String { if (isNaN(time)) return ""; var integerTime: int = Math.round(time); var seconds: int = integerTime % 60; integerTime = integerTime / 60; var minutes: int = integerTime % 60; var hours: int = integerTime / 60; return printf("%02d:%02d:%02d", hours, minutes, seconds); } internal function formatTimeAsFractions(time: Number): String { if (isNaN(time)) return ""; var hours: Number = time / 3600.0; return new String(Math.round(hours * 100) / 100); } ... and the timeFormat object is a combo box with items whose labelFunction attributes are formatTimeAsFractions and formatTimeAsInterval. The columns that have time formats have formatColumnTime as their labelFunction value, because extracting the seconds in that function and passing it in to the formatters made for a more testable app (IMHO). So, when the timeFormat.selectedItem value changes, I want to force my grid to re-calculate the labels of these colums. What method must I call on it? invalidateProperties() didn't work, so that's out.

    Read the article

  • WPF Combobox Updates list but not the selected item

    - by JoshReedSchramm
    I have a combo box on a WPF form. On this form the user selects a record from the combo box which populates the rest of the fields on the form so the user can update that record. When they click save I am re-retrieving the combo box source which updates the combo box list. The problem is the selected item keeps the original label even though the data behind it is different. When you expand the combo box the selected item shows the right label. I am using a command binding mechanism. Here is some of the relevant code. private void SaveSalesRep() { BindFromView(); if (_salesRep.Id == 0) SalesRepRepository.AddAndSave(_salesRep); else SalesRepRepository.DataContext.SaveChanges(); int originalId = _salesRep.Id; InitSalesRepDropDown(); SalesRepSelItem = ((List<SalesRep>) SalesRepItems.SourceCollection).Find(x => x.Id == originalId); } private void InitSalesRepDropDown() { var salesRepRepository = IoC.GetRepository<ISalesRepRepository>(); IEnumerable<SalesRep> salesReps = salesRepRepository.GetAll(); _salesRepItems = new CollectionView(salesReps); NotifyPropertyChanged("SalesRepItems"); SalesRepSelItem = SalesRepItems.GetItemAt(0) as SalesRep; } The Selected Item property on the combo box is bound to SalesRepSelItem Property and the ItemsSource is bound to SalesRepItems which is backed by _salesRepItems. THe SalesRepSelItem property called NotifyPropertyChanges("SalesRepSelItem") which raises a PropertyChanged event. All told the binding of new items seems to work and the list updates, but the label on the selected item doesnt. Any ideas? Thanks all.

    Read the article

  • Cannot delete an image file that is shown in a listview

    - by Enrico
    Hello all, In my listview I show thumbnails of small images in a certain folder. I setup the listview as follows: var imageList = new ImageList(); foreach (var fileInfo in dir.GetFiles()) { try { var image = Image.FromFile(fileInfo.FullName); imageList.Images.Add(image); } catch { Console.WriteLine("error"); } } listView.View = View.LargeIcon; imageList.ImageSize = new Size(64, 64); listView.LargeImageList = imageList; for (int j = 0; j < imageList.Images.Count; j++) { var item = new ListViewItem {ImageIndex = j, Text = "blabla"}; listView.Items.Add(item); } The user can rightclick on an image in the listview to remove it. I remove it from the listview and then I want to delete this image from the folder. Now I get the error that the file is in use. Of course this is logical since the imagelist is using the file. I tried to first remove the image from the imagelist, but I keep on having the file lock. Can somebody tell me what I am doing wrong? Thanks!

    Read the article

  • Eclipse PDE - Plug-in, Feature, and Product Versioning

    - by Michael
    I am having much confusion over the process of upgrading version numbers in dependent plug-ins, features, and products in a fairly large eclipse workspace. I have made API changes to java code residing in an existing plug-in and thus requires an increase of the Major part of the version identifier. This plug-in serves as a dependency to a given feature, where the feature is later included in a product. From the documentation at http://wiki.eclipse.org/Version_Numbering, I understand (for the most part) when the proper number should be increased on the containing plug-in itself. However, how would this Major version number change on the plug-in affect dependent, "down-the-line" items (e.g., features, products)? For example, assume we have the typical "Hello World" setup as follows: Plug-in: com.example.helloworld, version 1.0.0 Feature: com.example.helloworld.feature, version 1.0.0 Product: com.example.helloworld.product, version 1.0.0 If I were to make an API change in the plug-in, this would require a version update to be that of 2.0.0. What would then be the version of the feature, 1.1.0? The same question can be applied for the product level as well (e.g., if the feature is 1.1.0 OR 2.0.0, what is the product version number)? I'm sure this is quite the newbie question so I apologize for wasting anyone's time and effort. I have searched for this type of content but all I am finding is are examples showing how to develop a plug-in, feature, product, and update site for the first time. The only other content related to my search has been developing feature patches and have not touched on the versioning aspect as much as I would prefer. I am having difficulty coming into (for the first time) an Eclipse RCP / PDE environment and need to learn the proper way and / or best practices for making such versioning updates and how to best reflect this throughout other dependent projects in the workspace.

    Read the article

  • Selecting a Java framework for large application w/ only ONE user

    - by Bijan
    I am building a large application that will be hosted on an AWS server. I'm trying to select a web framework for assisting me with code organization, template design, and generally presentation aspects. Here are some points of consideration: Require security/login/user authentication. I may add the ability in the future to allow more than just an administrator to access the web app, but it is not a public facing website. AJAX support would be helpful. There are a couple widgets that I don't want to recreate. One is a tree object, where the user can expand/contract items in the list, can create new branches, add/edit objects. This would be better off in some dynamic view rather than all done in ugly html. Generally, this is just to provide the application with a face for control, management, and monitoring. Having an easier time adding buttons, CSS, AJAX widgets are great additions though, but not the primary purpose. I'm considering: Wicket Spring Seam GWT Stripe and the list goes on, as I'm sure you all know. I originally planned on using GWT, but then started to feel that GWT didn't cover my primary needs. I could be wrong about this, but there seems to be a lot of support for GWT AND Wicket/Spring. All of this 'getting lost in java frameworks' got me thinking outside the java realm for a framework that would suit my needs that was a clear option, like: JRuby/Rails Jython/Django Groovy/Grails Guice (just throwing this in there... I don't clearly understand the main purposes of all these frameworks. It doesn't seem like DInjection is something I need for a single purpose application) Thanks as always. This community makes Googling for esoteric programming information an order of magnitude better.

    Read the article

  • TRibbon's large button's image is not centered...any ideas? easy to demonstrate at design-time.

    - by X-Ray
    i'm using delphi 2009 (updates 1, 2, 3, 4). i'm seeing something quite peculiar. the image on the button is not centered in the button when i have a large button with a large glyph! rather than being centered, the left part of the glyph starts at the center of the button. a clue is that when i: go into the action editor and select the action use the ImageIndex combobox in the object inspector, the list is empty (normally i'd see the available images in the combobox). it seems as though there's an image width property i've failed to set or an imagelist not correctly configured. i've expected the glyph on a large button should be 32x32. try the following: paste these components into an empty form add a 32x32 image to the image list set the Action1 imageindex to 0 you'll immediately see what i mean! can anyone tell me why it looks that way? i find it interesting that the ribbon demo app doesn't show this problem. i even tried the same image. thank you! object ActionManager1: TActionManager ActionBars = < item Items = < item Action = Action1 Caption = '&Action1' ImageIndex = 0 CommandProperties.ButtonSize = bsLarge end> ActionBar = RibbonGroup1 end> LargeDisabledImages = img3232 LargeImages = img3232 Left = 376 Top = 184 StyleName = 'Ribbon - Luna' object Action1: TAction Caption = 'Action1' ImageIndex = 0 end end object Ribbon1: TRibbon Left = 0 Top = 0 Width = 693 Height = 147 ActionManager = ActionManager1 Caption = 'Ribbon1' Tabs = < item Caption = 'RibbonPage1' Page = RibbonPage1 end> ExplicitLeft = 232 ExplicitTop = 80 ExplicitWidth = 0 DesignSize = ( 693 147) StyleName = 'Ribbon - Luna' object RibbonPage1: TRibbonPage Left = 0 Top = 54 Width = 692 Height = 93 Caption = 'RibbonPage1' Index = 0 object RibbonGroup1: TRibbonGroup Left = 4 Top = 3 Width = 54 Height = 86 ActionManager = ActionManager1 Caption = 'RibbonGroup1' GroupIndex = 0 end end end object img3232: TImageList Height = 32 Width = 32 Left = 376 Top = 256 end

    Read the article

  • Setting nested object to null when combobox has empty value

    - by Javi
    Hello, I have a Class which models a User and another which models his country. Something like this: public class User{ private Country country; //other attributes and getter/setters } public class Country{ private Integer id; private String name; //other attributes and getter/setters } I have a Spring form where I have a combobox so the user can select his country or can select the undefined option to indicate he doen't want to provide this information. So I have something like this: <form:select path="country"> <form:option value="">-Select one-</form:option> <form:options items="${countries}" itemLabel="name" itemValue="id"/> </form:select> In my controller I get the autopopulated object with the user information and I want to have country set to null when the "-Select one-" option has been selected. So I have set a initBinder with a custom editor like this: @InitBinder protected void initBinder(WebDataBinder binder) throws ServletException { binder.registerCustomEditor(Country.class, "country", new CustomCountryEditor()); } and my editor do something like this: public class CustomCountryEditor(){ @Override public String getAsText() { //I return the Id of the country } @Override public void setAsText(String str) { //I search in the database for a country with id = new Integer(str) //and set country to that value //or I set country to null in case str == null } } When I submit the form it works because when I have country set to null when I have selected "-Select one-" option or the instance of the country selected. The problem is that when I load the form I have a method like the following one to load the user information. @ModelAttribute("user") public User getUser(){ //loads user from database } The object I get from getUser() has country set to a specific country (not a null value), but in the combobox is not selected any option. I've debugged the application and the CustomCountryEditor works good when setting and getting the text, thoughgetAsText method is called for every item in the list "countries" not only for the "country" field. Any idea? Is there a better way to set null the country object when I select no country option in the combobox? Thanks

    Read the article

  • Make an image transparent in IE to show non-transparent background

    - by Select0r
    Hi, I'm trying to get this thing to work in IE (any version - works in FF, Opera, Safari, Chrome ...): I have a DIV with a background-image. The DIV also contains an image that should be transparent onMouseOver. The expected behaviour now is that the DIV-background would shine through the transparent image (which it does in all browsers but IE). Instead it looks like the image is getting transparent but on a white background, I can't see the DIV's background through the image. Here's some code: <div><a href="#" class"dragItem"><img /></a></div> And some CSS: .dojoDndItemOver { cursor : pointer; filter : alpha(opacity = 50); opacity : 0.5; -moz-opacity : 0.5; -khtml-opacity : 0.5; } .dragItem:hover { filter : alpha(opacity = 30); opacity : 0.3; -moz-opacity : 0.3; -khtml-opacity : 0.3; background : none; } All of this is embedded in a Dojo Drag-n-Drop-system, so dojoDndItemOver will automatically be set to the DIV on MouseOver, dragItem is set to the href around the image (using the same class on the image directly doesn't work at all as IE doesn't support "hover" on other items that href). Any ideas? Or is it an IE-speciality to just "simulate" transparency on images by somehow just greying them out instead of providing real transparency and showing whatever is beneath?

    Read the article

  • VB.NET invalid cast exception

    - by user127147
    Hi there, I have a simple application to store address details and edit them. I have been away from VB for a few years now and need to refreash my knowledge while working to a tight deadline. I have a general Sub responsible for displaying a form where user can add contact details (by pressing button add) and edit them (by pressing button edit). This sub is stored in a class Contact. The way it is supposed to work is that there is a list with all the contacts and when new contact is added a new entry is displayed. If user wants to edit given entry he or she selects it and presses edit button Public Sub Display() Dim C As New Contact C.Cont = InputBox("Enter a title for this contact.") C.Fname = frmAddCont.txtFName.Text C.Surname = frmAddCont.txtSName.Text C.Address = frmAddCont.txtAddress.Text frmStart.lstContact.Items.Add(C.Cont.ToString) End Sub I call it from the form responsible for adding new contacts by Dim C As New Contact C.Display() and it works just fine. However when I try to do something similar using the edit button I get errors - "Unable to cast object of type 'System.String' to type 'AddressBook.Contact'." Dim C As Contact If lstContact.SelectedItem IsNot Nothing Then C = lstContact.SelectedItem() C.Display() End If I think it may be something simple however I wasn't able to fix it and given short time I have I decided to ask for help here. Thank you

    Read the article

  • Do I need to use http redirect code 302 or 307?

    - by Iain Fraser
    I am working on a CMS that uses a search facility to output a list of content items. You can use this facility as a search engine, but in this instance I am using it to output the current month's Media Releases from an archive of all Media Releases. The default parameters for these "Data Lists" as they are called, don't allow you to specify "current month" or "current year" for publication date - only "last x days" or "from dateA to dateB". The search facility will accept querystring parameters though, so I intend to code around it like this: Page loads How many days into the current month are we? Do we have a query string that asks for a list including this many days? If no, redirect the client back to this page with the appropriate query-string included. If yes, allow the CMS to process the query Now here's the rub. Suppose the spider from your favourite search engine comes along and tries to index your main Media Releases page. If you were to use a 301 redirect to the default query page, the spider would assume the main page was defunct and choose to add the query page to its index instead of the main page. Now I see that 302 and 307 indicate that a page has been moved temporarily; if I do this, are spiders likely to pop the main page into their index like I want them to? Thanks very much in advance for your help and advice. Kind regards Iain

    Read the article

  • Caching a column in a polymorphic relationship

    - by Brendon Muir
    I have content management system application that uses a polymorphic tree table as the core of its arrangement. I've come into a problem where once the tree grows quite large, and because we have quite a few different modules (about 25), just doing :include = :instance doesn't cut the mustard. Instance is the name of our polymorphic relationship. The funny part is that in most cases when I want a large list of these items, all I really want is their name from the associated table (for the purposes of an index bar for example), all the rest is in the central table. So I thought that I should probably implement some sort of column cache for the name in the central table. (Like a counter cache that rails already does). I was just wondering if a plugin exists to manage this already? If not, I was just going to add a 'name' column to the central table and because all the polymorphic models inherit off a superclass, just add a callback that pushes the name across to the central table whenever the item is created or updated. I'd then just do a big migration to populate it in the first place? Any flaws to that design? I suppose to be more flexible the column could be some kind of serialised cache where I could store other things later on if need be? Gah! :D

    Read the article

  • how can I add a custom non-DataTable column to my DataView, in a winforms ADO.net application?

    - by Greg
    Hi, How could I (/is it possible) to add a custom column to my DataView, and in this column display the result of a specific calculation. That is, I currently have a dataGridView which has a binding to a DataView, based on the DataTable from my database. I'd like to add an additional column to the dataGridView to display a number which is calculated by looking at this current row plus it's children row. In other words the info for the column isn't just derivable from the row data itself. Specific questions might be: a) where to add the column itself? to the DataView I assume? b) which method / event to trigger the re-calculation of the value of this custom column from ( / how do I control this) Thanks PS. I've also noted if I use the following code/approach I get a infinite loop... // Custom Items DataColumn dc = new DataColumn("OverallSize", typeof(long)); DT_Webfiles.Columns.Add(dc); DT_Webfiles.RowChanged += new DataRowChangeEventHandler(DT_Row_Changed); private static void DT_Row_Changed(object sender, DataRowChangeEventArgs e) { e.Row["OverallSize"] = e.Row["OverallSize"] ?? 0; e.Row["OverallSize"] = (long)e.Row["OverallSize"] + 1; } What other approach could avoid this looping. i.e. currently I'm saying update the value of the custom column when the row changes, however after then changing the row it triggers antoher 'row has changed' event...

    Read the article

  • Django model operating on a queryset

    - by jmoz
    I'm new to Django and somewhat to Python as well. I'm trying to find the idiomatic way to loop over a queryset and set a variable on each model. Basically my model depends on a value from an api, and a model method must multiply one of it's attribs by this api value to get an up-to-date correct value. At the moment I am doing it in the view and it works, but I'm not sure it's the correct way to achieve what I want. I have to replicate this looping elsewhere. Is there a way I can encapsulate the looping logic into a queryset method so it can be used in multiple places? I have this atm (I am using django-rest-framework): class FooViewSet(viewsets.ModelViewSet): model = Foo serializer_class = FooSerializer bar = # some call to an api def get_queryset(self): # Dynamically set the bar variable on each instance! foos = Foo.objects.filter(baz__pk=1).order_by('date') for item in foos: item.needs_bar = self.bar return items I would think something like so would be better: def get_queryset(self): bar = # some call to an api # Dynamically set the bar variable on each instance! return Foo.objects.filter(baz__pk=1).order_by('date').set_bar(bar) I'm thinking the api hit should be in the controller and then injected to instances of the model, but I'm not sure how you do this. I've been looking around querysets and managers but still can't figure it out nor decided if it's the best method to achieve what I want. Can anyone suggest the correct way to model this with django? Thanks.

    Read the article

  • Odd behaviour with PHP's in_array function.

    - by animuson
    I have a function that checks multiple form items and returns either boolean(true) if the check passed or the name of the check that was run if it didn't pass. I built the function to run multiple checks at once, so it will return an array of these results (one result for each check that was run). When I run the function, I get this array result: Array ( [0] => 1 [1] => password [2] => birthday ) // print_r array(3) { [0]=> bool(true) [1]=> string(8) "password" [2]=> string(8) "birthday" } // var_dump The 'username' check passed and the 'password' and 'birthday' checks both failed. Then I am using simple in_array statements to determine which ones failed, like so: $results = $ani->e->vld->simulate("register.php", $checks); die(var_dump($results)); // Added after to see what array was being returned if (in_array("username", $results)) // do something if (in_array("password", $results)) // do something if (in_array("birthday", $results)) // do something The problem I'm having is that the 'username' line is still executing, even those 'username' is not in the array. It executes all three statements as if they were all true for some reason. Why is this? I thought maybe that the bool(true) was automatically causing the function to return true for every result without checking the rest of the array, but I couldn't find any documentation that would suggest that very odd functionality.

    Read the article

  • mysql error in php

    - by fusion
    i'm trying to run this php code which should display a quote from mysql, but can't figure out where is it going wrong. the result variable is null or empty. can someone help me out. thanks! <?php include 'config.php'; // 'text' is the name of your table that contains // the information you want to pull from $rowcount = mysql_query("select count(*) as rows from quotes"); // Gets the total number of items pulled from database. while ($row = mysql_fetch_assoc($rowcount)) { $max = $row["rows"]; //print_r ($max); } // Selects an item's index at random $rand = rand(1,$max)-1; print_r ($rand); $result = mysql_query("select * from quotes limit $rand, 1") or die ('Error: '.mysql_error()); if (!$result or mysql_num_rows($result)) { echo "Empty"; } else{ while ($row = mysql_fetch_array($result)) { $randomOutput = $row['cQuotes']; echo '<p>' . $randomOutput . '</p>'; } }

    Read the article

  • Merge replication server side foreign key violation from unpublished table

    - by Reiste
    We are using SQL Server 2005 Merge Replication with SQL CE 3.5 clients. We are using partitions with filtering for the separate subscriptions, and nHibernate for the ORM mapping. There is automatic ID range management from SQL Server for the subscriptions. We have a table, Item, and a table with a foreign key to Item - ItemHistory. Both of these are replicated down, filtered according to the subscription. Item has a column called UserId, and is filtered per subscription with this filter: WHERE UserId IN (SELECT... [complicated subselect]...) ItemHistory hangs off Item in the publication filter articles. On the server, we have a table ItemHistoryExport, which has a foreign key to ItemHistory. ItemHistoryExport is not published. Entries in the Item and ItemHistory tables are never deleted, on the server or the client. However, the "ownership" of items (and hence their ItemHistories) MAY change, which causes them to be moved from one client subscription/partition to another from time to time. When we sync, we occasionally get the following error: A row delete at '48269404 - 4108383dbb11' could not be propagated to 'MyServer\MyInstance.MyDatabase'. This failure can be caused by a constraint violation. The DELETE statement conflicted with the REFERENCE constraint "FK_ItemHistoryExport_ItemHistory". The conflict occurred in database "MyDatabase", table "dbo.ItemHistoryExport", column 'ItemHistoryId'. Can anyone help us understand why this happens? There shouldn't ever be a delete happening on the server side.

    Read the article

  • ASP.NET and VB.NET OleDbConnection Problem

    - by Matt
    I'm working on an ASP.NET website where I am using an asp:repeater with paging done through a VB.NET code-behind file. I'm having trouble with the database connection though. As far as I can tell, the paging is working, but I can't get the data to be certain. The database is a Microsoft Access database. The function that should be accessing the database is: Dim pagedData As New PagedDataSource Sub Page_Load(ByVal obj As Object, ByVal e As EventArgs) doPaging() End Sub Function getTheData() As DataTable Dim DS As New DataSet() Dim strConnect As New OleDbConnection("Provider = Microsoft.Jet.OLEDB.4.0;Data Source=App_Data/ArtDatabase.mdb") Dim objOleDBAdapter As New OleDbDataAdapter("SELECT ArtID, FileLocation, Title, UserName, ArtDate FROM Art ORDER BY Art.ArtDate DESC", strConnect) objOleDBAdapter.Fill(DS, "Art") Return DS.Tables("Art").Copy End Function Sub doPaging() pagedData.DataSource = getTheData().DefaultView pagedData.AllowPaging = True pagedData.PageSize = 2 Try pagedData.CurrentPageIndex = Int32.Parse(Request.QueryString("Page")).ToString() Catch ex As Exception pagedData.CurrentPageIndex = 0 End Try btnPrev.Visible = (Not pagedData.IsFirstPage) btnNext.Visible = (Not pagedData.IsLastPage) pageNumber.Text = (pagedData.CurrentPageIndex + 1) & " of " & pagedData.PageCount ArtRepeater.DataSource = pagedData ArtRepeater.DataBind() End Sub The ASP.NET is: <asp:Repeater ID="ArtRepeater" runat="server"> <HeaderTemplate> <h2>Items in Selected Category:</h2> </HeaderTemplate> <ItemTemplate> <li> <asp:HyperLink runat="server" ID="HyperLink" NavigateUrl='<%# Eval("ArtID", "ArtPiece.aspx?ArtID={0}") %>'> <img src="<%# Eval("FileLocation") %>" alt="<%# DataBinder.Eval(Container.DataItem, "Title") %>t"/> <br /> <%# DataBinder.Eval(Container.DataItem, "Title") %> </asp:HyperLink> </li> </ItemTemplate> </asp:Repeater>

    Read the article

  • how to do introspection in R (stat package)

    - by Lebron James
    Hi all, I am somewhat new to R, and i have this piece of code which generates a variable that i don't know the type for. Are there any introspection facility in R which will tell me which type this variable belongs to? The following illustrates the property of this variable: I am working on linear model selection, and the resource I have is lm result from another model. Now I want to retrieve the lm call by the command summary(model)$call so that I don't need to hardcode the model structure. However, since I have to change the dataset, I need to do a bit of modification on the "string", but apparently it is not a simple string. I wonder if there is any command similar to string.replace so that I can manipulate this variable from the variable $call. Thanks > str<-summary(rdnM)$call > str lm(formula = y ~ x1, data = rdndat) > str[1] lm() > str[2] y ~ x1() > str[3] rdndat() > str[3] <- data Warning message: In str[3] <- data : number of items to replace is not a multiple of replacement length > str lm(formula = y ~ x1, data = c(10, 20, 30, 40)) > str<-summary(rdnM)$call > str lm(formula = y ~ x1, data = rdndat) > str[3] <- 'data' > str lm(formula = y ~ x1, data = "data") > str<-summary(rdnM)$call > type str Error: unexpected symbol in "type str" >

    Read the article

< Previous Page | 293 294 295 296 297 298 299 300 301 302 303 304  | Next Page >