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  • HTML5 : trop de battage médiatique ? L'équipe du framework Kendo UI répond dans un état des lieux sur l'utilisation du langage

    État des lieux sur l'utilisation du HTML5 par l'équipe de Kendo UI "Le battage médiatique du HTML5 est-il justifié ?" Voici la question que se posent en substance l'équipe de Kendo UI, le framework JavaScript et HTML pour obtenir des interfaces utilisateurs "modernes". Pour y répondre, l'équipe a sondé plus de 4.000 développeurs. Trois questions sont particulièrement intéressantes et portent sur : la tendance d'adoption du HTML5 ; l'importance de HTML5 pour les développeurs ; l'impact des influences extérieures sur le HTML5 (exemple : le fiasco mobile de Facebook). Le résultat comple...

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  • ComboBox exception caused in winforms FormClosing event

    - by Spooky2010
    Using c# vs2008 winforms I have an application with a bunch of child winforms. Each time a form is closed I need to store the current selected value of a combobox that is on each form to a Global application variable so that I can track it and use it in new forms. The combobox is populated on form start via a method to set its datasource to an ArrayList of items What I have found is if the combobox is populated with items in the designer, and you try to get the combobox value in the form closing event, I always get a NullReferenceException. However if the comboBox has an datasource like I DO have in my application and I try to get the combobox value in the form closing event then I would say 95% of the time I DO NOT get the NullReferenceException, but I do get it 5% of the time. That ratio can even vary depending on what computer I run the application on. for example I have 1 computer where the exception always occurs. My question is therefore what is (the best) way to get the value of the combobox, last thing before the form closes without causing the exception. I would def prefer to do it last thing before the form closes rather than track it with every selected index change event. Any advice appreciated.

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  • Accesing WinCE ComboBox DroppedDown property (.NET CF 2.0)

    - by PabloG
    I'm implementing custom behavior sub-classing the form controls, but I cannot manage to access the DroppedDown property of the ComboBox. Looking in the help, it's supposed to be supported in CF.NET 2.0: using System; using System.Collections.Generic; using System.ComponentModel; using System.Drawing; using System.Data; using System.Text; using System.Windows.Forms; namespace xCustomControls { public partial class xComboBox : System.Windows.Forms.ComboBox { private ComboBox comboBox1; public xComboBox() { InitializeComponent(); this.KeyDown += new KeyEventHandler(this.KeyDownHandler); } private void KeyDownHandler(object sender, KeyEventArgs e) { // DroppedDown doesn't appear in the IntelliSense of ComboBox. // or this.comboBox1. if (((ComboBox)sender).DroppedDown) // fail! return; switch (e.KeyData) { case Keys.Up: case Keys.Enter: case Keys.Down: e.Handled = true; this.Parent.SelectNextControl((Control)sender, e.KeyData != Keys.Up, true, true, true); ... fails with 'System.Windows.Forms.ComboBox' does not contain a definition for 'DroppedDown' and no extension method 'DroppedDown' accepting a first argument of type 'System.Windows.Forms.ComboBox' could be found How can I access the property? TIA, Pablo

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  • How can I make a Yes/No combobox return true/false?

    - by Kasper Hansen
    I am new to creating forms in Visual Studio and C#. But I made a UI that has some comboboxes where the DropDownStyle is DropDownList. The items shown is Yes and No. But I need to assign this as a boolean value to a property on some object ai and currently do this: if (cmbExample.Text == "Yes") { ai.isPacketType = true; } else if (cmbExample.Text == "No") { ai.isPacketType = false; } I basically want to do something like this (or some other one liner): ai.isPacketType = cmbExample.Text; How do I link the Text Yes to the value true and No to false?

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  • combobox intem does not show in crystal report [migrated]

    - by upitnik
    I am creating a simple printing application using crstal reports, C# and visual studio 2010. On my winform I have some textboxes, comboboxes. Comboboxes are using data for fill from the XML file. On my report I created some parameters and linked with the selection of comboboxes. When I use: cryRpt.SetParameterValue("PAR3", cmbSome.SelectedIndex); on my report I see the 0 or 1 depending my item selection. Now I want to display, not the index but the value ie: Monday. If I use selectedItem, selectedText or selectedValue i do not see anything on my report. To see what happend i put another textbox on my form and linked it with the combobox selection as: txtProe.Text = Convert.ToString(cmbSome.SelectedItem); or txtProe.Text = cmbSome.Text; In both case when I click the button I see that my selection from cmbSome is passed to it. Does anyone knows what happens here ??!

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  • ComboBox Data Binding

    - by Geertjan
    Let's create a databound combobox, levering MVC in a desktop application. The result will be a combobox, provided by the NetBeans ChoiceView, that displays data retrieved from a database: What follows is not much different from the NetBeans Platform CRUD Application Tutorial and you're advised to consult that document if anything that follows isn't clear enough. One kind of interesting thing about the instructions that follow is that it shows that you're able to create an application where each element of the MVC architecture can be located within a separate module: Start by creating a new NetBeans Platform application named "MyApplication". Model We're going to start by generating JPA entity classes from a database connection. In the New Project wizard, choose "Java Class Library". Click Next. Name the Java Class Library "MyEntities". Click Finish. Right-click the MyEntities project, choose New, and then select "Entity Classes from Database". Work through the wizard, selecting the tables of interest from your database, and naming the package "entities". Click Finish. Now a JPA entity is created for each of the selected tables. In the Project Properties dialog of the project, choose "Copy Dependent Libraries" in the Packaging panel. Build the project. In your project's "dist" folder (visible in the Files window), you'll now see a JAR, together with a "lib" folder that contains the JARs you'll need. In your NetBeans Platform application, create a module named "MyModel", with code name base "org.my.model". Right-click the project, choose Properties, and in the "Libraries" panel, click Add Dependency button in the Wrapped JARs subtab to add all the JARs from the previous step to the module. Also include "derby-client.jar" or the equivalent driver for your database connection to the module. Controler In your NetBeans Platform application, create a module named "MyControler", with code name base "org.my.controler". Right-click the module's Libraries node, in the Projects window, and add a dependency on "Explorer & Property Sheet API". In the MyControler module, create a class with this content: package org.my.controler; import org.openide.explorer.ExplorerManager; public class MyUtils { static ExplorerManager controler; public static ExplorerManager getControler() { if (controler == null) { controler = new ExplorerManager(); } return controler; } } View In your NetBeans Platform application, create a module named "MyView", with code name base "org.my.view".  Create a new Window Component, in "explorer" view, for example, let it open on startup, with class name prefix "MyView". Add dependencies on the Nodes API and on the Explorer & Property Sheet API. Also add dependencies on the "MyModel" module and the "MyControler" module. Before doing so, in the "MyModel" module, make the "entities" package and the "javax.persistence" packages public (in the Libraries panel of the Project Properties dialog) and make the one package that you have in the "MyControler" package public too. Define the top part of the MyViewTopComponent as follows: public final class MyViewTopComponent extends TopComponent implements ExplorerManager.Provider { ExplorerManager controler = MyUtils.getControler(); public MyViewTopComponent() { initComponents(); setName(Bundle.CTL_MyViewTopComponent()); setToolTipText(Bundle.HINT_MyViewTopComponent()); setLayout(new BoxLayout(this, BoxLayout.PAGE_AXIS)); controler.setRootContext(new AbstractNode(Children.create(new ChildFactory<Customer>() { @Override protected boolean createKeys(List list) { EntityManager entityManager = Persistence. createEntityManagerFactory("MyEntitiesPU").createEntityManager(); Query query = entityManager.createNamedQuery("Customer.findAll"); list.addAll(query.getResultList()); return true; } @Override protected Node createNodeForKey(Customer key) { Node customerNode = new AbstractNode(Children.LEAF, Lookups.singleton(key)); customerNode.setDisplayName(key.getName()); return customerNode; } }, true))); controler.addPropertyChangeListener(new PropertyChangeListener() { @Override public void propertyChange(PropertyChangeEvent evt) { Customer selectedCustomer = controler.getSelectedNodes()[0].getLookup().lookup(Customer.class); StatusDisplayer.getDefault().setStatusText(selectedCustomer.getName()); } }); JPanel row1 = new JPanel(new FlowLayout(FlowLayout.LEADING)); row1.add(new JLabel("Customers: ")); row1.add(new ChoiceView()); add(row1); } @Override public ExplorerManager getExplorerManager() { return controler; } ... ... ... Now run the application and you'll see the same as the image with which this blog entry started.

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  • Binding to Silverlight ComboBox and Using SelectedValue, SelectedValuePath and DisplayMemberPath

    How do you bind a ComboBox to a collection of objects, and then bind a property from the selected objects to some other scalar property? I received this question today from a friend of mine (a variation of this question). I decided to walk through the scenario here in case anyone else runs into it. This is one of those things that can be confusing it is simple, but it is is much easier shown the explained. This post lays out the scenario and you can download the sample code at the end. When we...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • DataTrigger only works on first TabItem in TabControl

    - by JustusJonas
    Hi! It seems like a bug in WPF, but maybe someone has an answers to this. I have a DataTrigger for an editable ComboBox. It works on the first TabItem of my TabControl, but not on the second. If you switch the first with the second TabItem, the "second" will work. The same effect happens when you give the style exactly to the ComboBox (ComboBox.Stye ...). <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="MainWindow" x:Name="Window" Title="MainWindow" Width="640" Height="480"> <Window.Resources> <Style TargetType="{x:Type ComboBox}"> <Setter Property="Height" Value="25" /> <Setter Property="Width" Value="125" /> <Style.Triggers> <DataTrigger Binding="{Binding ElementName=PART_EditableTextBox, Path=IsFocused}" Value="True"> <Setter Property="BitmapEffect"> <Setter.Value> <OuterGlowBitmapEffect GlowColor="Red" GlowSize="5" /> </Setter.Value> </Setter> </DataTrigger> </Style.Triggers> </Style> </Window.Resources> <Grid x:Name="LayoutRoot"> <TabControl> <TabItem Header="TabItem1"> <Grid> <ComboBox IsEditable="True"/> </Grid> </TabItem> <TabItem Header="TabItem2"> <Grid> <ComboBox IsEditable="True"/> </Grid> </TabItem> </TabControl> </Grid>

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  • WPF ComboBox Object Binding - not updating DataContext Object

    - by Jaysen
    Hello, I have the following scenario: 1 class called 'Widget' with the properties: ID, Code, Description 1 class called 'MyWidget' with a property: m_Widget As Widget 1 ComboBox The ComboBox has a List(Of Widget) set as the ItemSource. I create an instance of 'MyWidget' named MyWidget1 and I set the property values of the m_Widget to match one of the items in the 'ComboBox List(Of Widget)'. I then set the DataContext of the ComboBox to MyWidget1.Widget. When I change the ComboBox selected item, only the ID property of 'MyWidget1.Widget' gets updated... How do I get the object 'Widget' on 'MyWidget1' to be updated instead of just 'MyWidget1.Widget.ID'? Here is a link to a sample project demonstrating this scenario: http://www.webpersona.com/ObjectBinding.zip Thanks in advance for any help :)

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  • Workaround for richfaces combobox hotkey bug

    - by John
    Hi, Does anyone know a workaround for the bug https://jira.jboss.org/jira/browse/RF-8076 ? Just to clarify things, we have a form with multiple inputs, one of them being a combobox with auto complete features. We've setup a hotkey via <rich:hotKey key="return" ... /> It works great everywhere except in the combobox, and I would really like to get it working on the combobox as well. The behaviour I want when the ENTER key is pressed inside the combobox is: If the combobox context was modified by auto complete then do nothing Else action the event on ENTER key pressed We're running on seam/richfaces. I'm open to any workaround, but simplicity is much sought for. Thanks!

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  • Silverlight Cascading Combobox

    - by lidermin
    Hi, I have an issue trying to implement cascading comboboxes on Silverlight 3. I have two comboboxes: Product Type Sub Cathegory The user need to select the Product type, and based on his selection, the second combobox must load the sub cathegories. Binding the first combobox is a piece of cake: <ComboBox x:Name="cmbProductType" Margin="11,2,8,5" MaxDropDownHeight="100" Grid.Column="1 /> cmbProductType.ItemsSource = objFactory.ProductTypes; objFactory.Load(objFactory.GetProductTypesQuery()); My issue is trying to load the second combobox based on the first seleccion. I tryied to implement the SelectionChanged event on the first combobox, but it didn't worked for me: private void cmbProductType_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e) { FactoryDS objFactory = new FactoryDS(); cmbSubCat.ItemsSource = objFactMetas.Campos; objFactory.Load(objFactory.GetSubCathegoryQuery(((SybCathegroy)cmbProductType.SelectedItem).Id)); } How should I do this? (I'm new on Silverlight). thanks in advance.

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  • allow only distinct values in ComboBox

    - by Ravinder Gangadher
    In my project, I am trying to populate ComboBox from DataSet. I succeeded in populating but the values inside the ComboBox are not distinct (Because it just showing the values present in DataSet). I cant bind the ComboBox to DataSet because I am adding "Select" text at first of populating the values. Here is my code. ComboBox --> cmb DataSet --> ds DataSet Column Name --> value(string) cmb.Items.Clear(); cmb.Items.Add("Select"); for (int intCount = 0; intCount < ds.Tables[0].Rows.Count; intCount++) { cmb.Items.Add(ds.Tables[0].Rows[intCount][value].ToString()); } cmb.SelectedIndex = 0; My question is how to allow distinct values (or restrict duplicate values) inside the ComboBox.

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  • How to bind a datatable to a wpf editable combobox: selectedItem showing System.Data.DataRowView

    - by black sensei
    Hello Good People!! I bound a datatable to a combobox and defined a dataTemplate in the itemTemplate.i can see desired values in the combobox dropdown list,what i see in the selectedItem is System.Data.DataRowView here are my codes: <ComboBox Margin="128,139,123,0" Name="cmbEmail" Height="23" VerticalAlignment="Top" TabIndex="1" ToolTip="enter the email you signed up with here" IsEditable="True" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding}"> <ComboBox.ItemTemplate> <DataTemplate> <StackPanel> <TextBlock Text="{Binding Path=username}"/> </StackPanel> </DataTemplate> </ComboBox.ItemTemplate> The code behind is so : if (con != null) { con.Open(); //users table has columns id | username | pass SQLiteCommand cmd = new SQLiteCommand("select * from users", con); SQLiteDataAdapter da = new SQLiteDataAdapter(cmd); userdt = new DataTable("users"); da.Fill(userdt); cmbEmail.DataContext = userdt; } I've been looking for something like SelectedValueTemplate or SelectedItemTemplate to do the same kind of data templating but i found none. I'll like to ask if i'm doing something wrong or it's a known issue for combobox binding? if something is wrong in my code please point me to the right direction. thanks for reading this

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  • asp.net ajax toolkit combobox doesn't work in hidden div

    - by sam
    I have a combobox inside a hidden div which I use css display = none to make it invisible, but when I make the div visible by setting display = block, the combobox just show the input and its button and ul list all have css as display = 'none', visibility ='hidden'. I can tell it is done by combobox inbuild javascript because I tried to use javascript to set the css manually with no luck. It is a bug of combobox. Urgent help needed. I spent a week to solve this, and our team put a lot trust on the toolkit. Please help me on this, all javascript gurus, thanks. Below is the code to reproduce the bug. When you run it, you can't see the dropdown: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %> <asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"> </asp:ToolkitScriptManager> <div id="d" style="display:none"> <asp:ComboBox ID="ComboBox1" runat="server"> <asp:ListItem>a</asp:ListItem> <asp:ListItem>d</asp:ListItem> <asp:ListItem>f</asp:ListItem> </asp:ComboBox> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> </div> <div ID="Button1" runat="server" onclick="show();">click me</div> <script type="text/javascript"> function show() { var d = $get('d'); d.style.display = 'block'; } </script>

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  • How to add entries to combobox in Word XP

    - by Kris C
    I'm trying to follow the following instructions to add a combobox to a form and add some values to it for the user to pick: http://office.microsoft.com/en-gb/help/create-forms-that-users-complete-in-word-HP005230270.aspx I've created a .dot and then dragged a combobox onto the document. When I double-click on it though, it opens up the VBA editor. Do I have to add the items programatically as per the following question How do I add a combobox in Word? or is it possible to do this using the UI? The other question/answer refers to creating a form. Is there a step I've missed between creating a .dot to then create a form somehow before adding form elements to it? Right clicking gives the following menu options: Cut Copy Paste properties View code Combo Box Object - Edit or Convert Format Control Hyperlink Choosing edit allows me to type some text onto the visible part of the control, but doesn't allow me to add multiple options Right-clicking and selecting properties opens the following:

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  • WPF 4 Datagrid with ComboBox

    - by Doug
    I have a WPF 4 app with a ComboBox embedded in a DataGrid. The ComboBox is in a template column that displays the combobox when in edit mode but just a TextBlock otherwise. If I edit the cell and pick a new value from the combobox, when leaving the cell, the TextBlock in view mode does not reflect the new value. Ultimately, the new value gets saved and is displayed when the window is refreshed but it does not happen while still editing in the grid. Here are the parts that are making this more complicated. The grid and the combobox are bound to different ItemsSource from the EnityFramework which is tied to my database. For this problem, the grid is displaying project members. The project member name can be picked from the combobox which gives a list of all company employees. Any ideas on how to tie the view mode of the DataGridColumnTemplate to the edit value when they are pointing to different DataSources? Relevant XAML <Window.Resources> <ObjectDataProvider x:Key="EmployeeODP" /> </Window.Resources> <StackPanel> <DataGrid Name="teamProjectGrid" AutoGenerateColumns="false" ItemsSource="{Binding Path=ProjectMembers}" <DataGrid.Columns> <DataGridTemplateColumn Header="Name" x:Name="colProjectMember"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding Path=ProjectMemberFullName}" /> </DataTemplate> </DataGridTemplateColumn.CellTemplate> <DataGridTemplateColumn.CellEditingTemplate> <DataTemplate> <ComboBox x:Name="ProjectMemberCombo" IsReadOnly="True" DisplayMemberPath="FullName" SelectedValue="{Binding Path=Employee}" ItemsSource="{Binding Source={StaticResource EmployeeODP}}" /> </DataTemplate> </DataGridTemplateColumn.CellEditingTemplate> </DataGridTemplateColumn> <DataGridTextColumn x:Name="colProjectRole" Binding="{Binding Path=ProjectRole}" Header="Role" /> </DataGrid.Columns> </DataGrid> </StackPanel> Relevant Code Behind this.DataContext = new MyEntityLibrary.MyProjectEntities(); ObjectDataProvider EmployeeODP= (ObjectDataProvider)FindResource("EmployeeODP"); if (EmployeeODP != null) { EmployeeODP.ObjectInstance = this.DataContext.Employees; }

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  • How to read from path in wpf comboboxitem and write into path of binding

    - by Chrik
    Hi, I tried to make up an example to show my problem. My combobox has a list of objects as itemssource. In my example it's a list of Persons. In the combobox i want to show the first name and the last name of the person. But i want to save the last name of the person in the "owner" property of the house-object. My guess was that i bind the SelectedValue to my property and the SelectedValuePath to the name of the property in the comboboxitem. I already googled and tried a view other versions but nothing worked. If i use SelectedItem instead of SelectedValue with the same binding at least the value of the "tostring" function get's written in the property. Sadly that solution doesn't fit in the Rest of my Program because i don't want to override "ToString". The Xaml: <Window x:Class="MultiColumnCombobox.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300" x:Name="window"> <Grid> <ComboBox Height="23" Margin="72,12,86,0" Name="ComboBox1" VerticalAlignment="Top" SelectedValue="{Binding CurrentHouse.Owner, ElementName=window, Mode=TwoWay}" SelectedValuePath="LastName" ItemsSource="{Binding PersonList, ElementName=window, Mode=Default}"> <ComboBox.ItemTemplate> <DataTemplate> <WrapPanel Orientation="Horizontal"> <TextBlock Text="{Binding Path=FirstName}" Padding="10,0,0,0" /> <TextBlock Text="{Binding Path=LastName}" Padding="10,0,0,0" /> </WrapPanel> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> <Button Height="23" Click="PrintButton_Click" HorizontalAlignment="Left" Margin="12,0,0,9" Name="PrintButton" VerticalAlignment="Bottom" Width="75">Print</Button> </Grid> The C# using System.Collections.Generic; using System.Windows; using System; namespace MultiColumnCombobox { public partial class Window1 : Window { private List _PersonList = new List(); public List PersonList { get { return _PersonList; } set { _PersonList = value; } } private House _CurrentHouse = new House { Owner = "Green", Number = "11" }; public House CurrentHouse { get { return _CurrentHouse; } } public Window1() { InitializeComponent(); PersonList.Add(new Person {FirstName = "Peter", LastName = "Smith"}); PersonList.Add(new Person {FirstName = "John", LastName = "Meyer"}); PersonList.Add(new Person {FirstName = "Fritz", LastName = "Green"}); } private void PrintButton_Click(object sender, RoutedEventArgs e) { MessageBox.Show(CurrentHouse.Owner + ":" + CurrentHouse.Number); } } public class House { public string Owner { get; set; } public string Number { get; set; } } public class Person { public string FirstName { get; set; } public string LastName { get; set; } } } Maybe someone has an idea, Christian

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  • Populating ComboBoxDataColumn items and values

    - by MarceloRamires
    I have a "populate combobox", and I'm so happy with it that I've even started using more comboboxes. It takes the combobox object by reference with the ID of the "value set" (or whatever you want to call it) from a table and adds the items and their respective values (which differ) and does the job. I've recently had the brilliant idea of using comboboxes in a gridview, and I was happy to notice that it worked JUST LIKE a single combobox, but populating all the comboboxes in the given column at the same time. ObjComboBox.Items.Add("yadayada"); //works just like ObjComboBoxColumn.Items.Add("blablabla"); But When I started planning how to populate these comboboxes I've noticed: There's no "Values" property in ComboBoxDataColumn. ObjComboBox.Values = whateverArray; //works, but the following doesn't ObjComboBoxColumn.Values = whateverArray; Questions: 0 - How do I populate it's values ? (I suspect it's just as simple, but uses another name) 1 - If it works just like a combobox, what's the explanation for not having this attribute ? -----[EDIT]------ So I've checked out Charles' quote, and I've figured I had to change my way of populating these bad boys. Instead of looping through the strings and inserting them one by one in the combobox, I should grab the fields I want to populate in a table, and set one column of the table as the "value", and other one as the "display". So I've done this: ObjComboBoxColumn.DataSource = DTConfig; //Double checked, guaranteed to be populated ObjComboBoxColumn.ValueMember = "Code"; ObjComboBoxColumn.DisplayMember = "Description"; But nothing happens, if I use the same object as so: ObjComboBoxColumn.Items.Add("StackOverflow"); It is added. There is no DataBind() function. It finds the two columns, and that's guaranteed ("Code" and "Description") and if I change their names to nonexistant ones it gives me an exception, so that's a good sign. -----[EDIT]------ I have a table in SQL Server that is something like code  |  text —————    1    | foo    2    | bar It's simple, and with other comboboxes (outside of gridviews) i've successfully populated looping through the rows and adding the texts: ObjComboBox.Items.Add(MyDataTable.Rows[I]["MyColumnName"].ToString()); And getting every value, adding it into an array, and setting it like: ObjComboBox.Values = MyArray; I'd like to populate my comboboxColumns just as simply as I do with comboboxes.

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  • VB.NET: Dialog exits when enter pressed?

    - by Camilo Martin
    Hi all; My problem seems to be quite simple, but it's not working the intuitive way. I'm designing a Windows Forms Application, and there is a dialog that should NOT exit when the enter key is pressed, instead it has to validate data first, in case enter was pressed after changing the text of a ComboBox. I've tried by telling it what to do on KeyPress event of the ComboBox if e is the Enter key: Private Sub ComboBoxSizeChoose_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ComboBoxSizeChoose.KeyPress If e.KeyChar = Convert.ToChar(Keys.Enter) Then Try TamanhoDaNovaFonte = Single.Parse(ComboBoxSizeChoose.Text) Catch ex As Exception Dim Dialogo2 As New Dialog2 Dialog2.ShowDialog() ComboBoxSizeChoose.Text = TamanhoDaNovaFonte End Try End If End Sub But no success so far. When the Enter key is pressed, even with the ComboBox on focus, the whole dialog is closed, returning to the previous form. The validation is NOT done at all, and it has to be done before exiting. In fact, I don't even want to exit on the form's enter KeyPress, the only purpose of the enter key on the whole dialog is to validate the ComboBox (but only when in focus, for the sake of an intuitive UI). I've also tried appending the validation to the KeyPress event of the whole dialog's form, if the key is Enter. NO SUCCESS! It's like my code wasn't there at all. What should I do? (Visual Studio 2008, VB.NET)

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  • How do I add a combo box to a DataGrid?

    - by FigBug
    I want to add a ComboBox to a DataGrid. So far, the only way I've found to do it is like this: <mx:DataGridColumn headerText="Header" dataField="src" > <mx:itemRenderer> <mx:Component> <mx:ComboBox dataProvider="{data.srcChoices}" /> </mx:Component> </mx:itemRenderer> </mx:DataGridColumn> The problem is the initial value of the ComboBox isn't set correctly. If I hard code the choices, then the initial value is set correctly. I can't hard code the choices. Any idea what I should do?

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  • 2 (or more) ComboBoxes dependent on each other

    - by Mcad001
    Hi, I have an Organisation entity and a Region entity. An object of type Organisation can have one or more Region objects connected to it, thus I have a foreign key in my Region entity to the Organisation Entity. The Organisation and Region objects are pulled from my database using WCF RIA and entity framework. I want to put the Organisation objects in one ComboBox and the Region objects in another ComboBox, and when selecting an organsation having the ComboBox for Region objects automatically only showing regions that are connected to the selected organisation. Should be pretty basic, but the way I've designed it right now it doesnt work at all. So, any hint to how I can achive this? A simple simple codeexample is much appreciated! (I'm using SL4,WCF RIA MVVM)

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