initial commit of code

App.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
+    </startup>
+</configuration>

App.xaml

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+<Application x:Class="Weather_Images_Downloader.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:Weather_Images_Downloader"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+    </Application.Resources>
+
+</Application>

App.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace Weather_Images_Downloader
+{
+    /// <summary>
+    /// Interaktionslogik für "App.xaml"
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

MainWindow.xaml

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+<Window x:Class="Weather_Images_Downloader.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d"
+        Name="window" Title="Weather Images Downloader" SizeToContent="Height" Width="525" Closed="window_Closed" ResizeMode="CanMinimize">
+    <Grid Margin="5">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+        </Grid.RowDefinitions>
+        <Grid Grid.Row="0">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="*"/>
+            </Grid.ColumnDefinitions>
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+            </Grid.RowDefinitions>
+
+            <Label Grid.Column="0" Grid.Row="0" Content="Lade Bilder von:" Margin="2" Padding="0"/>
+            <CheckBox Grid.Column="1" Grid.Row="0" Content="Heute" Margin="2" IsChecked="{Binding Path=Today}"/>
+            <CheckBox Grid.Column="2" Grid.Row="0" Content="Gestern" Margin="2" IsChecked="{Binding Path=Yesterday}"/>
+            <CheckBox Grid.Column="3" Grid.Row="0" Content="Vorgestern" Margin="2" IsChecked="{Binding Path=YesterYesterday}"/>
+
+            <Label Grid.Column="0" Grid.Row="1" Content="Typ:" Margin="2" Padding="0" />
+            <CheckBox Grid.Column="1" Grid.Row="1" Content="Regen" Margin="2" IsChecked="{Binding Path=Rain}"/>
+            <CheckBox Grid.Column="2" Grid.Row="1" Content="Wetter" Margin="2" IsChecked="{Binding Path=Weather}"/>
+        </Grid>
+
+        <Grid Grid.Row="1">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="*"/>
+            </Grid.ColumnDefinitions>
+
+            <Label Content="Ort(e): " Padding="0" Margin="2"/>
+            <TextBox Name="areaTextBox" Grid.Column="1" Text="{Binding Path=Areas}" VerticalAlignment="Center" Margin="2"/>
+        </Grid>
+
+        <Grid Grid.Row="2">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="Auto"/>
+                <ColumnDefinition Width="*"/>
+            </Grid.ColumnDefinitions>
+            <Button Name="downloadButton" Grid.Column="1" Content="Download" Margin="5" Click="downloadButton_Click"/>
+
+            <CheckBox Grid.Column="2" Grid.Row="0" Content="Live View" VerticalAlignment="Center" Margin="2" IsChecked="{Binding ElementName=window, Path=LiveView}"/>
+        </Grid>
+
+        <Grid Grid.Row="3">
+            <Grid.RowDefinitions>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+                <RowDefinition Height="Auto"/>
+            </Grid.RowDefinitions>
+            <Label Name="progressLabel" Content="{Binding Path=ProgressString, ElementName=window}" Padding="0" Margin="2,0,2,-2"/>
+            <ProgressBar Grid.Row="1" Name="progressBar" Value="{Binding Progress, ElementName=window, Mode=OneWay}" Height="10" Maximum="1" Margin="2,0,2,0"/>
+            <Label Grid.Row="2" Content="{Binding Error, ElementName=window, Mode=OneWay}" Margin="0,15,0,0"/>
+            <Image Grid.Row="3" Source="{Binding ElementName=window, Path=WeatherImage}" Height="Auto" Visibility="{Binding ElementName=window, Path=LiveView}"/>
+        </Grid>
+    </Grid>
+</Window>

MainWindow.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.IO;
+using System.Net;
+using System.Runtime.CompilerServices;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using Weather_Images_Downloader.Annotations;
+
+namespace Weather_Images_Downloader
+{
+    public partial class MainWindow : INotifyPropertyChanged
+    {
+        private double _progress;
+        public double Progress
+        {
+            get { return _progress; }
+            private set
+            {
+                if (Equals(_progress, value)) return;
+
+                _progress = value;
+                OnPropertyChanged();
+            }
+        }
+
+        private string _progressString;
+        public string ProgressString
+        {
+            get { return _progressString; }
+            private set
+            {
+                if (Equals(_progressString, value)) return;
+
+                _progressString = value;
+                OnPropertyChanged();
+            }
+        }
+
+        private string _error;
+        public string Error
+        {
+            get { return _error; }
+            set
+            {
+                if (value == _error) return;
+
+                _error = value;
+                OnPropertyChanged();
+            }
+        }
+
+        private ImageSource _weatherImage;
+        public ImageSource WeatherImage
+        {
+            get { return _weatherImage; }
+            set
+            {
+                if (Equals(value, _weatherImage)) return;
+                _weatherImage = value;
+                OnPropertyChanged();
+            }
+        }
+
+        private bool _liveView;
+        public bool LiveView
+        {
+            get { return _liveView; }
+            set
+            {
+                if (value == _liveView) return;
+                _liveView = value;
+                OnPropertyChanged();
+
+                if (!LiveView)
+                    WeatherImage = null;
+            }
+        }
+
+        private int _total;
+        private int _counter;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+            Progress = 0f;
+            ProgressString = "-";
+
+            Static.LoadSettings();
+
+            DataContext = Static.SettingsInstance;
+        }
+
+        private void downloadButton_Click(object sender, RoutedEventArgs e)
+        {
+            var weatherImages = new List<WeatherImage>();
+
+            var types = new List<string>();
+
+            if(Static.SettingsInstance.Rain)
+                types.Add("grey_flat");
+            if (Static.SettingsInstance.Weather)
+                types.Add("composite");
+
+            var pattern = new Regex(@"(\w+)");
+            var matches = pattern.Matches(areaTextBox.Text);
+
+            foreach (Match match in matches)
+            {
+                foreach (var type in types)
+                {
+                    if (Static.SettingsInstance.Today)
+                    {
+                        var currentUtcTime = DateTime.UtcNow;
+                        currentUtcTime = currentUtcTime.AddMinutes(- currentUtcTime.Minute % 5);
+                        weatherImages.AddRange(CreateWeatherImages(match.Value, type, DateTime.Today, currentUtcTime));
+                    }
+                    if (Static.SettingsInstance.Yesterday)
+                        weatherImages.AddRange(CreateWeatherImages(match.Value, type, DateTime.Today.AddDays(- 1), DateTime.Today.AddDays(- 1).AddHours(23)));
+                    if (Static.SettingsInstance.YesterYesterday)
+                        weatherImages.AddRange(CreateWeatherImages(match.Value, type, DateTime.Today.AddDays(- 2), DateTime.Today.AddDays(- 2).AddHours(23)));
+                }
+            }
+
+            _total = weatherImages.Count;
+            _counter = 0;
+
+            var errorCounter = 0;
+            Error = "";
+
+            Task.Run(() =>
+            {
+                Dispatcher.Invoke(() =>
+                {
+                    downloadButton.IsEnabled = false;
+                });
+
+                Parallel.For(0, weatherImages.Count, (i =>
+                {
+                    try
+                    {
+                        _counter++;
+                        Progress = (double)(_counter) / _total;
+                        ProgressString = (_counter) + "/" + _total + " - " + Math.Round(Progress * 100, 1) + "%";
+
+                        var weatherImage = weatherImages[i];
+                        var request = WebRequest.CreateHttp(weatherImage.Url);
+                        request.UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36";
+                        var response = request.GetResponse();
+                        var responseStream = response.GetResponseStream();
+
+                        var directory = Path.Combine(Environment.CurrentDirectory, "weatherimages", weatherImage.Area, weatherImage.Type);
+                        var path = Path.Combine(directory, weatherImage.Filename);
+
+                        if (!Directory.Exists(directory))
+                            Directory.CreateDirectory(directory);
+
+                        using (var fs = new FileStream(path, FileMode.Create))
+                        {
+                            var buffer = new byte[1024];
+                            var totalBytesRead = 0;
+
+                            while (totalBytesRead < response.ContentLength)
+                            {
+                                var bytesRead = responseStream.Read(buffer, 0, buffer.Length);
+                                fs.Write(buffer, 0, bytesRead);
+                                totalBytesRead += bytesRead;
+                            }
+                        }
+
+                        if (LiveView)
+                        {
+                            Dispatcher.Invoke(() =>
+                            {
+                                try
+                                {
+                                    WeatherImage = new BitmapImage(new Uri(path));
+                                }
+                                catch
+                                {
+                                    // ignored
+                                }
+                            });
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        Error = "Error (" + ++errorCounter + "): " + ex.Message;
+                    }
+                }));
+
+                Dispatcher.Invoke(() =>
+                {
+                    downloadButton.IsEnabled = true;
+                });
+            });
+        }
+
+        private WeatherImage[] CreateWeatherImages(string area, string type, DateTime start, DateTime end)
+        {
+            var weatherImages = new List<WeatherImage>();
+
+            do
+            {
+                weatherImages.Add(CreateWeatherImage(area, type, start));
+
+                start = start.AddMinutes(5);
+            } while (start < end);
+
+            return weatherImages.ToArray();
+        }
+
+        private WeatherImage CreateWeatherImage(string area, string type, DateTime dateTime)
+        {
+            var year = dateTime.ToString("yyyy");
+            var month = dateTime.ToString("MM");
+            var day = dateTime.ToString("dd");
+            var hour = dateTime.ToString("HH");
+            var minute = dateTime.ToString("mm");
+
+            var url = string.Format("http://www.wetteronline.de/?ireq=true&pid=p_radar_map&src=wmapsextract/vermarktung/global2maps/{0}/{1}/{2}/{5}/{6}/{0}{1}{2}{3}{4}_{5}.{7}", year, month, day, hour, minute, area, type, type == "grey_flat" ? "png" : "jpeg");
+            var file = string.Format("{0}-{1}-{2} {3}-{4} {5} {6}.jpeg", year, month, day, hour, minute, area, type);
+
+            return new WeatherImage(type, area, year, month, day, hour,minute, url, file);
+        }
+
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        [NotifyPropertyChangedInvocator]
+        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        private void window_Closed(object sender, EventArgs e)
+        {
+            Static.SaveSettings();
+        }
+    }
+
+    struct WeatherImage
+    {
+        public string Type { get; set; }
+        public string Area { get; set; }
+        public string Year { get; set; }
+        public string Month { get; set; }
+        public string Day { get; set; }
+        public string Hour { get; set; }
+        public string Minute { get; set; }
+
+        public string Url { get; set; }
+        public string Filename { get; set; }
+
+        public WeatherImage(string type, string area, string year, string month, string day, string hour,string minute, string url = "", string filename = "")
+        {
+            Type = type;
+            Area = area;
+            Year = year;
+            Month = month;
+            Day = day;
+            Hour = hour;
+            Minute = minute;
+            Url = url;
+            Filename = filename;
+        }
+    }
+}