public static BitmapImage ImageFromPath(string path) { Uri imgUri = new Uri(path, UriKind.Relative); StreamResourceInfo imageResource = Application.GetResourceStream(imgUri); BitmapImage image = new BitmapImage(); image.SetSource(imageResource.Stream); return image; } |
IPHostEntry host = Dns.GetHostEntry(Dns.GetHostName()); string mioIP = host.AddressList.FirstOrDefault(ip => ip.AddressFamily == AddressFamily.InterNetwork).ToString(); |
public partial class MainWindow : Window { private int Compute() { int somma = 0; for (int i = 0; i < 10000; i++) { somma += i; Console.WriteLine(i); } return somma; } private Task<int> ComputeAsync() { return Task.Run(() => Compute()); } public MainWindow() { InitializeComponent(); } private void btnCompute_Click(object sender, RoutedEventArgs e) { Console.WriteLine("Elaborazione in corso..."); int somma = Compute(); Console.WriteLine("Elaborazione terminata: " + somma); } private async void btnComputeAsync_Click(object sender, RoutedEventArgs e) { Console.WriteLine("Elaborazione async in corso..."); int somma = await ComputeAsync(); Console.WriteLine("Elaborazione async terminata: " + somma); } } |
<Window x:Class="TestWPF.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Async/Await C# 4.5" Height="184.831" Width="346.723"> <Grid> <Button Content="Compute" HorizontalAlignment="Left" Margin="38,53,0,0" VerticalAlignment="Top" Width="97" Name="btnCompute" Click="btnCompute_Click"/> <Button Content="Compute async" HorizontalAlignment="Left" Margin="171,53,0,0" VerticalAlignment="Top" Width="97" Name="btnComputeAsync" Click="btnComputeAsync_Click"/> </Grid> </Window> |
public static bool IsNullOrEmpty<T>(this Collection<T> collection) { return collection == null || (collection != null && collection.Count() == 0); } |
public MainWindow() { InitializeComponent(); } private void Comando_CanExecute(object sender, CanExecuteRoutedEventArgs e) { //Condizione per determinare se eseguire o meno il comando e.CanExecute = textBox1.Text == "ok"; e.Handled = true; } private void Comando_Execute(object sender, ExecutedRoutedEventArgs e) { e.Handled = true; MessageBox.Show("Command in WPF"); } |
<Window x:Class="TestWPF.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Command in WPF" Height="184.831" Width="346.723"> <Window.Resources> <RoutedUICommand x:Key="Comando" /> </Window.Resources> <Window.CommandBindings> <CommandBinding Command="{StaticResource Comando}" CanExecute="Comando_CanExecute" Executed="Comando_Execute" /> </Window.CommandBindings> <Grid> <TextBox HorizontalAlignment="Left" Height="23" Margin="10,23,0,0" TextWrapping="Wrap" Name="textBox1" VerticalAlignment="Top" Width="120"/> <Button Content="Button" HorizontalAlignment="Left" Margin="149,23,0,0" VerticalAlignment="Top" Width="75" Command="{StaticResource Comando}"/> </Grid> </Window> |
using (var watcher = new GeoCoordinateWatcher()) { if (watcher.Permission == GeoPositionPermission.Granted) { watcher.TryStart(false, TimeSpan.FromSeconds(2)); if (!watcher.Position.Location.IsUnknown) { latitudine = watcher.Position.Location.Latitude; longitudine = watcher.Position.Location.Longitude; } watcher.Stop(); } else { MessageBox.Show("Non si dispone dei permessi"); } }
<DataGrid> <DataGrid.RowStyle> <Style TargetType="{x:Type DataGridRow}"> <Setter Property="ContextMenu"> <Setter.Value> <ContextMenu> <MenuItem Header="Nuovo" VCommand="{StaticResource nuovo}"> <MenuItem.Icon> <Image Source="/Images/nuovo.png" Height="24"/> </MenuItem.Icon> </MenuItem> <MenuItem Header="Elimina" Command="{StaticResource elimina}"> <MenuItem.Icon> <Image Source="/Images/elimina.png" Height="24"/> </MenuItem.Icon> </MenuItem> </ContextMenu> </Setter.Value> </Setter> </Style> </DataGrid.RowStyle> </DataGrid> |
<?xml version="1.0" encoding="utf-8"?> <access-policy> <cross-domain-access> <policy> <allow-from http-request-headers="SOAPAction"> <domain uri="*"/> </allow-from> <grant-to> <resource path="/" include-subpaths="true"/> </grant-to> </policy> </cross-domain-access> </access-policy>Errore visualizzato:
using (NpgsqlConnection connection = new NpgsqlConnection(stringaConnessione)) { connection.Open(); using (NpgsqlCommand cmd = new NpgsqlCommand("INSERT INTO miaTabella (campoTipoGeomtry) VALUE(st_geometryfromtext('POINT(' || @lon || ' ' || @lat ||')',4326))", connection)) { cmd.Parameters.AddWithValue("@lat", latitudine); cmd.Parameters.AddWithValue("@lon", longitudine); cmd.ExecuteNonQuery(); } connection.Close(); } |
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<my:FloatingWindowHost x:Name="host"
SnapinEnabled="True" ShowMinimizedOnlyInIconbar="False">
</my:FloatingWindowHost>
FloatingWindow window = new FloatingWindow();
window.Title = "New window";
host.Add(window);
window.Show();
<my:FloatingWindow x:Class="FloatingWindowControl.DetailsForm" xmlns:my="clr-namespace:SilverFlow.Controls;assembly=SilverFlow.Controls" Height="Auto" MinWidth="100" MinHeight="100" Title="Details" IconText="Details Form" Tag="Details">
