databinding

TreeView Databinding

Hi,I want to add items in treeviewi n WPF.I have function as public void SetTree(string Title,int Boxtype,int BoxNo ) { sBoxType = "Group"; TreeList items = TreeList.Load(Title, sBoxType, BoxNo); DataContext = items; } XAML Code of TreeView: <TreeView Margin="16,275,18,312" x:Name...

Best method for Binding ComboBox

I am going to be developing a large project which will include a large number of ComboBoxes. Most of these combo boxes will be bound to a database field which is a related to another daataset/table. For instance. I have the following 2 tables: Company {CompanyID, CompanyName, MainContact} Contacts {ContactID, ContactName} And when t...

How do I use a ValueConverter in with Databinding in Winforms

In WPF it is easy to use a ValueConverter to format values etc, (in our case convert some numbers into a different unit, e.g km to miles) I know it can be done in Winforms, but all my Googleing just brings up results for WPF and Silverlight. ...

Initialize properties of custom component before creating children in flex

Say I have the following custom component: <s:Group xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <fx:Script> <![CDATA[ [Bindable] public var prop:String; private function formatProp() : String { ...

ASP:Chart control - databind pie chart from datatable

Hi folks, I've got a datatable with two columns "Status" (string) and "Total" (integer). Status Total Success 34 Missing 2 Failed 10 I want to databind this into a pie chart with each Status per slice but I'm not sure what method of data binder is required? Thanks, Jonesy ...

Why would you have multiple databindings to a WinForms control?

I'm trying to learn how to use WinForms databinding, but one thing that's confusing me is why you would "Add" a databinding rather then "Set" a databinding? For example consider the following code. TextBox1.DataBindings.Add("Text", ds,"Customers.CustomerID") As I understand it this line adds a databinding to TextBox1 that binds its Tex...

Force Binding Update Silverlight

How can I force my objects DataContext bindings to update? I'm using an event on a grid, and binding updates are not being processed before my event fires. Any cheap tricks to get around this? In the end I can always do things the old manual way of getting the values from my textboxes and updating my object, but it'd be nice to have bin...

Access to bound data in IMultiValueConverter.ConvertBack() in C#/WPF

I have a problem with a multibinding: <Canvas> <local:SPoint x:Name="sp" Width="10" Height="10"> <Canvas.Left><!-- irrelevant binding here --></Canvas.Left> <Canvas.Top> <MultiBinding Converter="{StaticResource myConverter}" Mode="TwoWay"> <Binding ElementName="cp1" Path="(Canvas.Top)"/> <Binding ElementName="cp1" Path="...

Winforms checkbox Databinding problem

Hello everybody! In a winforms application (VB, VS2008 SP1) i bound a checkbox field to a SQL Server 2005 BIT field. The databinding itself seems to work, there is this litte problem: user creates a new record and checks the checkbox, then the user decides to create a new record (without having saved the previous, so there are 2 new ...

Add new row: ListView vs. DataGrid

Hello! I have been looking around and even found a couple of related answers and didn't get a certain answer to my question. Is there a way to have in the WPF ListView an additional row like in a DataGrid? I prefer using the ListView since I use 3.5 and the DataGrid is not officially in the box and has many quirks. I would prefer using...

Silverlight recursivly bind Treeview to XDocument

How can I recursivly bind a Treeview to an XDocument, mapping each XML Element to a Node in the Treeview? The code below should work from my perspective (and also according to the very few posts I found regarding direct binding), however it does not: <sdk:TreeView ItemsSource="{Binding Path=Elements}" DataContext="{Binding Path=Data}">...

WPF ListBox/View Data Binding weird result

I have this problem when i try to synchronize a observable list with listbox/view it displays the first item X times (x total amount of records in the list) but it doesn't change the variable's here is the XAML <ListBox x:Name="PostListView" BorderThickness="0" MinHeight="300" Background="{x:N...

Update parameter not working on bound DropDownList

I have a DropDownList declared like this: <asp:DropDownList ID="campaignTypeList" runat="server" Width="150px" DataTextField="Name" DataValueField="CampaignTypeId" DataSourceID="campaignTypesDataSource" SelectedValue='<%# Bind("CampaignTypeID") %>'> </asp:DropDownList> Using the designer, my SqlDataSource is configured...

Is there a way to specify a custom dependency property's default binding mode and update trigger?

I would like to make it so that, as default, when I bind to one of my dependency properties the binding mode is two-way and update-trigger is property changed. Is there a way to do this? Here is an example of one of my dependency properties: public static readonly DependencyProperty BindableSelectionLengthProperty = DependencyP...

Silverlight 3 data-binding child property doesn't update

I have a Silverlight control that has my root ViewModel object as it's data source. The ViewModel exposes a list of Cards as well as a SelectedCard property which is bound to a drop-down list at the top of the view. I then have a form of sorts at the bottom that displays the properties of the SelectedCard. My XAML appears as (reduced ...

WPF TreeView databinding to hide/show expand/collapse icon

I implemented a WPF load-on-demand treeview like described in this (very good) article. In the mentioned solution a dummy element is used to preserve the expand + icon / treeview item behavior. The dummy item is replaced with real data, when the user clicks on the expander. I want to refine the model by adding a property public bool Has...

Android: databinding when using a ArrayAdapter: possible?

I need some simple databinding for a Spinner. I want to display 2 items for each dropdownitem. So when the user clicks the spinner I get a list like: ------------------- Name 123456 ------------------- Name 123456 ------------------- I understand this can be done when using a Cursor, according to the databinding info on android dev. L...

WPF Update Binding when Bound directly to DataContext w/ Converter

Normally when you want a databound control to 'update,' you use the "PropertyChanged" event to signal to the interface that the data has changed behind the scenes. For instance, you could have a textblock that is bound to the datacontext with a property "DisplayText" <TextBlock Text="{Binding Path=DisplayText}"/> From here, if the Dat...

WPF validation on Enter Key Up

I'm trying to validate a UI change when Enter key is pressed. The UI element is a textbox, which is data binded to a string. My problem is that the data binding hasn't updated TestText when Enter key is Up. It is only updated when I press the button which brings up a message box. /// <summary> /// Interaction logic for Window1.xaml /...

Problems with binding to Window Height and Width

I have some problems when I try to bind the height and width of a window to properties in my view model. Here is a small sample app to illustrate the problem. This is the code in app.xaml.xs public partial class App : Application { protected override void OnStartup(StartupEventArgs e) { base.OnStartup(e); MainWind...