You can create multiple ObservableCollections and then bind your ItemsSource to a CompositeCollection which joins those collections. Then in your XAML you can create different DataTemplates for the respective types using the DataType property which like styles gets automatically applied if it is placed in the resources. (You can also create the composite in XAML … Read more
Beside the very detailed description on MSDN about the Silverlight version of INotifyDataErrorInfo There are already some blog posts with samples how to use/implement it in WPF 4.5: WPF 4.5 – Asynchronous validation (original link no longer working) Wayback Link WPF 4.5 – Part 1 : Asynchronous data validation (the author has a nice series … Read more
I’m in the same boat as you, doing lots and lots of line-of-business type apps, nothing “fun” like games or compilers or search engines. Your mileage will vary, but at least in my own experience a lot of dev teams are reluctant to jump right into F# because no one else on the team knows … Read more
From what I understand you’re only guaranteed identical results provided that you’re dealing with the same instruction set and compiler, and that any processors you run on adhere strictly to the relevant standards (ie IEEE754). That said, unless you’re dealing with a particularly chaotic system any drift in calculation between runs isn’t likely to result … Read more
Or maybe strongly typed using linq, like this: public static T[] GetEnumValues<T>() { var type = typeof(T); if (!type.IsEnum) throw new ArgumentException(“Type ‘” + type.Name + “‘ is not an enum”); return ( from field in type.GetFields(BindingFlags.Public | BindingFlags.Static) where field.IsLiteral select (T)field.GetValue(null) ).ToArray(); } public static string[] GetEnumStrings<T>() { var type = typeof(T); if … Read more
I tried this and it works for me. <Window x:Class=”TryResponses.MainWindow” xmlns=”http://schemas.microsoft.com/winfx/2006/xaml/presentation” xmlns:x=”http://schemas.microsoft.com/winfx/2006/xaml” xmlns:vm=”clr-namespace:TryResponses” xmlns:system=”clr-namespace:System;assembly=mscorlib” Title=”MainWindow” Height=”350″ Width=”525″> <Window.Resources> <vm:MainWindowViewModel x:Key=”MainWindowViewModel” /> </Window.Resources> <Grid Background=”LightGray” DataContext=”{StaticResource MainWindowViewModel}”> <Grid.Resources> <Style TargetType=”ListViewItem”> <Style.Triggers> <Trigger Property=”ItemsControl.AlternationIndex” Value=”0″> <Setter Property=”Background” Value=”LightBlue” /> </Trigger> <Trigger Property=”ItemsControl.AlternationIndex” Value=”1″> <Setter Property=”Background” Value=”LightGray” /> </Trigger> </Style.Triggers> </Style> <DataTemplate DataType=”system:String”> <!– put your data template … Read more
According to this article, you just do as follow: FROM: xmlns:ZZZ=”clr-namespace:YYY;assembly=YYY” TO: xmlns:ZZZ=”clr-namespace:YYY;assembly=” leave empty value for assembly= This is the solution that works for me.
You need to install the silverlight toolkit… http://silverlight.codeplex.com/
No you cannot, however I often create a style for a shared base class such as FrameworkElement, and then create my individual control styles that are BasedOn the base style <Style TargetType=”{x:Type FrameworkElement}”> <!– Shared Setters –> </Style> <Style TargetType=”{x:Type TextBlock}” BasedOn=”{StaticResource {x:Type FrameworkElement}}” /> <Style TargetType=”{x:Type Label}” BasedOn=”{StaticResource {x:Type FrameworkElement}}” /> <Style TargetType=”{x:Type Button}” … Read more
I found this on silverlight.net, and was able to get it to work for me by adding a call to System.Windows.Browser.HtmlPage.Plugin.Focus() prior to calling RegularTextBox.Focus(): private void UserControl_Loaded(object sender, RoutedEventArgs e) { System.Windows.Browser.HtmlPage.Plugin.Focus(); RegularTextBox.Focus(); }