Ok, I'm a web developer, but I find myself dabbling in windows forms projects every now and then. One thing that confounds me to this day is the following. Assume you are doing something like the following List<string> myitems = new List<string> { "Item 1", "Item 2", "Item 3" }; ComboBox box = new ComboBox(); box.DataSourc...
when you data bind in C#, the thread that changes the data causes the control to change too. but if this thread is not the one on which the control was created, youll get the above exceptions. surfed the net - no good answer. anyone ?...
So WPF doesn't support standard sorting or filtering behavior for views of CompositeCollections, so what would be a best practice for solving tihs problem. There are two or more object collections of different types. You want to combine them into a single sortable and filterable collection (withing having to manually implement sort or ...
I’m creating a UserControl for a rich TreeView (one that has context menus for renaming nodes, adding child nodes, etc.). I want to be able to use this control to manage or navigate any hierarchical data structures I will create. I currently have it working for any data structure that implements the following interface (the interface nee...
I've only done a bit of Flex development thus far, but I've preferred the approach of creating controls programmatically over mxml files, because (and please, correct me if I'm wrong!) I've gathered that you can't have it both ways -- that is to say, have the class functionality in a separate ActionScript class file but have the containe...
Update: Solved, with code I got it working, see my answer below for the code... Original Post As Tundey pointed out in his answer to my last question, you can bind nearly everything about a windows forms control to ApplicationSettings pretty effortlessly. So is there really no way to do this with form Size? This tutorial says you need...
Another discussion (we've been having a lot of them these days!) in our work is whether data binding is a bad idea or not. Personally, I think it is A BAD THING. My reasons are thrice: 1) It circumvents my well architectured MVP framework - with databinding, the view communicates bi-directionally with a model. Ewww. 2) It promotes h...
I'm developing an Excel 2007 add-in using Visual Studio Tools for Office (2008). I have one sheet with several ListObjects on it, which are being bound to datatables on startup. When they are bound, they autosize correctly. The problem comes when they are re-bound. I have a custom button on the ribbon bar which goes back out to the d...
I'm trying to bind a list of custom objects to a WPF Image like this: <Image> <Image.Source> <BitmapImage UriSource="{Binding Path=ImagePath}" /> </Image.Source> </Image> But it doesn't work. This is the error I'm getting: "Property 'UriSource' or property 'StreamSource' must be set." What am I missing? ...
What is a data binding? ...
I have a ComboBox that I bind to a standard HTTPService, I would like to add an event listener so that I can run some code after the ComboBox is populated from the data provider. How can I do this? ...
Hi, Anyone know if it's possible to databind the ScaleX and ScaleY of a render transform in Silverlight 2 Beta 2? Binding transforms is possible in WPF - But I'm getting an error when setting up my binding in Silverlight through XAML. Perhaps it's possible to do it through code? <Image Height="60" HorizontalAlignment="Right" Ma...
Can anyone suggest a good implementation of a generic collection class that implements the IBindingListView & IBindingList interfaces and provides Filtering and Searching capabilities? I see my current options as: Using a class that someone else has written and tested Inheriting from BindingList, and implementing the IBindingListView ...
I have done a bit of research into this and it seems that the only way to sort a data bound combo box is to sort the data source itself (a DataTable in a DataSet in this case). If that is the case then the question becomes what is the best way to sort a DataTable? The combo box bindings are set in the designer initialize using myCom...
I'm trying to write a custom WPF ValidationRule to enforce that a certain property is unique within the context of a given collection. For example: I am editing a collection of custom objects bound to a ListView and I need to ensure that the Name property of each object in the collection is unique. Does anyone know how to do this? ...
I have a Flex ComboBox that gets populated by a dataprovider all is well... I would now like to add a default " -- select a item --" option at the 0 index, how can I do this and still use a dataprovider? I have not seen any examples of such, but I can't imagine this being hard... ...
What is Lazy Loading? [Edit after reading a few answers] Why do people use this term so often? Say you just use a ASP/ADO recordset and load it with data or ADO.NET Datasource for a gridview. I guess I should have asked why people use the term Lazy Loading, what "other" types are their? ...
I'm just getting dirty in WinForms, and I've discovered, through a lovely tutorial, the magic of dragging a database table onto the design view of my main form. So, all is lovely, I've got my DataGridView with all of the columns represented beautifully. BUT... When I run my application against this brand new, empty .sdf (empty save for...
I have a databound TextBox in my application like so: (The type of Height is decimal?) <TextBox Text="{Binding Height, UpdateSourceTrigger=PropertyChanged, ValidatesOnExceptions=True, Converter={StaticResource NullConverter}}" /> public class NullableConverter : IValueConverter { pu...
What particular method/application are you using to communicate between your application and a database? Custom code with stored procedures? SubSonic? nHibernate? Entity Framework? LINQ? ...