From f49e6a26c6efe1081718c40c53900849c38514d5 Mon Sep 17 00:00:00 2001
From: wienkop <uwe.wienkop@th-nuernberg.de>
Date: Tue, 1 Jun 2021 11:15:50 +0200
Subject: [PATCH] 2021-06-01 Delegates&Events
---
10-1 DelegateVariable/Button.cs | 21 ++++++
10-1 DelegateVariable/Program.cs | 29 +++++++-
10-1 GenerischeListeMitSuche/GenericList.cs | 8 +--
10-3 WpfButton/10-3 WpfButton.csproj | 10 +++
10-3 WpfButton/App.xaml | 9 +++
10-3 WpfButton/App.xaml.cs | 17 +++++
10-3 WpfButton/AssemblyInfo.cs | 10 +++
10-3 WpfButton/MainWindow.xaml | 13 ++++
10-3 WpfButton/MainWindow.xaml.cs | 33 +++++++++
10-Ubg HashDict-Di/10-Ubg HashDict-Di.csproj | 9 +++
10-Ubg HashDict-Di/HashDict.cs | 71 ++++++++++++++++++++
10-Ubg HashDict-Di/KeyValuePaar.cs | 16 +++++
10-Ubg HashDict-Di/Program.cs | 27 ++++++++
10-Ubg HashDict-Mo/HashDict.cs | 21 +++---
10-Ubg HashDict-Mo/Program.cs | 2 +-
Prog2WienkopSS2021.sln | 16 ++++-
16 files changed, 294 insertions(+), 18 deletions(-)
create mode 100644 10-1 DelegateVariable/Button.cs
create mode 100644 10-3 WpfButton/10-3 WpfButton.csproj
create mode 100644 10-3 WpfButton/App.xaml
create mode 100644 10-3 WpfButton/App.xaml.cs
create mode 100644 10-3 WpfButton/AssemblyInfo.cs
create mode 100644 10-3 WpfButton/MainWindow.xaml
create mode 100644 10-3 WpfButton/MainWindow.xaml.cs
create mode 100644 10-Ubg HashDict-Di/10-Ubg HashDict-Di.csproj
create mode 100644 10-Ubg HashDict-Di/HashDict.cs
create mode 100644 10-Ubg HashDict-Di/KeyValuePaar.cs
create mode 100644 10-Ubg HashDict-Di/Program.cs
diff --git a/10-1 DelegateVariable/Button.cs b/10-1 DelegateVariable/Button.cs
new file mode 100644
index 0000000..651686e
--- /dev/null
+++ b/10-1 DelegateVariable/Button.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace _10_1_DelegateVariable
+{
+ delegate void MyFunction(string s);
+ class Button
+ {
+ public /*event*/ MyFunction Callback;
+ // event ~ Einschränkung der Zugriffsmöglichkeiten von
+ // außerhalb der Klasse auf nur noch += bzw. -=
+
+ public void Print(string s)
+ {
+ Callback?.Invoke(s);
+ // print = null; ~ Nur innerhalb der Klasse erlaubt
+ }
+ }
+
+}
diff --git a/10-1 DelegateVariable/Program.cs b/10-1 DelegateVariable/Program.cs
index f5ae6ae..346f0c4 100644
--- a/10-1 DelegateVariable/Program.cs
+++ b/10-1 DelegateVariable/Program.cs
@@ -4,9 +4,36 @@ namespace _10_1_DelegateVariable
{
class Program
{
+ static void AusgabeInGrossbuchstaben(string s)
+ {
+ Console.WriteLine(s.ToUpper());
+ }
+ static void AusgabeInKleinbuchstaben(string s)
+ {
+ Console.WriteLine(s.ToLower());
+ }
static void Main(string[] args)
{
- Console.WriteLine("Hello World!");
+ Button t1 = new Button();
+ Button t2 = new Button();
+
+ t1.Print("Erster Versuch");
+
+ t1.Callback += Console.WriteLine;
+ t1.Callback += AusgabeInGrossbuchstaben;
+ t1.Callback = AusgabeInKleinbuchstaben;
+ t1.Callback += delegate (string s) { Console.WriteLine($"*** {s} ***"); };
+ t1.Callback += s => { Console.WriteLine($"--- {s} ---"); };
+ //t1.print -= AusgabeInGrossbuchstaben;
+ //t1.print += t1.print;
+
+ //t1.print -= s => { Console.WriteLine($"--- {s} ---"); };
+ // Anonyme Methoden & Lambda-Ausdrücke können nicht aus der Liste entfernt werden!
+
+ t1.Print("Hallo");
+
+ // t2.print += t1.print; Ebenfalls nicht erlaubt
+ //t2.Print("Welt");
}
}
}
diff --git a/10-1 GenerischeListeMitSuche/GenericList.cs b/10-1 GenerischeListeMitSuche/GenericList.cs
index 36181df..d73f64e 100644
--- a/10-1 GenerischeListeMitSuche/GenericList.cs
+++ b/10-1 GenerischeListeMitSuche/GenericList.cs
@@ -183,13 +183,13 @@ namespace _10_1_GenerischeListeMitSuche
for (LItem item = first; item != null; item = item.next)
yield return item.data;
}
- public delegate bool MeinFilter(T var);
- //public delegate bool Predicate(T var);
+ //public delegate bool MeinFilter(T var);
+ //public delegate bool Predicate(T var); Bereits von Microsoft vordefiniert
- public IEnumerable<T> Filter(Predicate<T> filter)
+ public IEnumerable<T> Filter(Predicate<T> filterFunktion)
{
for (LItem item = first; item != null; item = item.next)
- if (filter(item.data)) // Filterfunktion
+ if (filterFunktion(item.data)) // Filterfunktion
yield return item.data;
}
}
diff --git a/10-3 WpfButton/10-3 WpfButton.csproj b/10-3 WpfButton/10-3 WpfButton.csproj
new file mode 100644
index 0000000..dd4d853
--- /dev/null
+++ b/10-3 WpfButton/10-3 WpfButton.csproj
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+
+ <PropertyGroup>
+ <OutputType>WinExe</OutputType>
+ <TargetFramework>netcoreapp3.1</TargetFramework>
+ <RootNamespace>_10_3_WpfButton</RootNamespace>
+ <UseWPF>true</UseWPF>
+ </PropertyGroup>
+
+</Project>
diff --git a/10-3 WpfButton/App.xaml b/10-3 WpfButton/App.xaml
new file mode 100644
index 0000000..644e43e
--- /dev/null
+++ b/10-3 WpfButton/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="_10_3_WpfButton.App"
+ xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+ xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+ xmlns:local="clr-namespace:_10_3_WpfButton"
+ StartupUri="MainWindow.xaml">
+ <Application.Resources>
+
+ </Application.Resources>
+</Application>
diff --git a/10-3 WpfButton/App.xaml.cs b/10-3 WpfButton/App.xaml.cs
new file mode 100644
index 0000000..096bf09
--- /dev/null
+++ b/10-3 WpfButton/App.xaml.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace _10_3_WpfButton
+{
+ /// <summary>
+ /// Interaction logic for App.xaml
+ /// </summary>
+ public partial class App : Application
+ {
+ }
+}
diff --git a/10-3 WpfButton/AssemblyInfo.cs b/10-3 WpfButton/AssemblyInfo.cs
new file mode 100644
index 0000000..8b5504e
--- /dev/null
+++ b/10-3 WpfButton/AssemblyInfo.cs
@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+ ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+ //(used if a resource is not found in the page,
+ // or application resource dictionaries)
+ ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+ //(used if a resource is not found in the page,
+ // app, or any theme specific resource dictionaries)
+)]
diff --git a/10-3 WpfButton/MainWindow.xaml b/10-3 WpfButton/MainWindow.xaml
new file mode 100644
index 0000000..04922d8
--- /dev/null
+++ b/10-3 WpfButton/MainWindow.xaml
@@ -0,0 +1,13 @@
+<Window x:Class="_10_3_WpfButton.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"
+ xmlns:local="clr-namespace:_10_3_WpfButton"
+ mc:Ignorable="d"
+ Title="MainWindow" Height="450" Width="800">
+ <Grid>
+ <Button Content="Mein Button" HorizontalAlignment="Left" Margin="117,91,0,0" VerticalAlignment="Top" Click="Button_Click"/>
+
+ </Grid>
+</Window>
diff --git a/10-3 WpfButton/MainWindow.xaml.cs b/10-3 WpfButton/MainWindow.xaml.cs
new file mode 100644
index 0000000..861b830
--- /dev/null
+++ b/10-3 WpfButton/MainWindow.xaml.cs
@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace _10_3_WpfButton
+{
+ /// <summary>
+ /// Interaction logic for MainWindow.xaml
+ /// </summary>
+ public partial class MainWindow : Window
+ {
+ public MainWindow()
+ {
+ InitializeComponent();
+ }
+
+ private void Button_Click(object sender, RoutedEventArgs e)
+ {
+
+ }
+ }
+}
diff --git a/10-Ubg HashDict-Di/10-Ubg HashDict-Di.csproj b/10-Ubg HashDict-Di/10-Ubg HashDict-Di.csproj
new file mode 100644
index 0000000..07a3eaa
--- /dev/null
+++ b/10-Ubg HashDict-Di/10-Ubg HashDict-Di.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+ <PropertyGroup>
+ <OutputType>Exe</OutputType>
+ <TargetFramework>netcoreapp3.1</TargetFramework>
+ <RootNamespace>_10_Ubg_HashDict_Di</RootNamespace>
+ </PropertyGroup>
+
+</Project>
diff --git a/10-Ubg HashDict-Di/HashDict.cs b/10-Ubg HashDict-Di/HashDict.cs
new file mode 100644
index 0000000..8274546
--- /dev/null
+++ b/10-Ubg HashDict-Di/HashDict.cs
@@ -0,0 +1,71 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace _10_Ubg_HashDict_Di
+{
+ // Erstellen Sie eine Klasse HashDict, welches ebenfalls Schlüssel-/Wertpaare abspeichern kann.
+ // Allerdings sollen die Schlüssel-/Wertpaare nicht in einer Liste, sondern in einem
+ // hinreichend großen Feld abgelegt werden.
+ // Der Schlüssel soll direkt in einen Feldplatz umgerechnet werden (Hashfunktion), etwaige
+ // Konflikte sind geeignet zu behandeln.
+ // Für die Generierung eines Hashcodes gibt es bereits in Object eine Methode:
+ // int GetHashCode()
+ // Erstellen Sie
+ // - indexer-Zugriff (get;set)
+ // - GetEnumerator()
+ // - Contains-Methode
+ class HashDict<K,V> where K:class,IComparable<K>
+ {
+ K[] keys;
+ V[] values;
+ int length;
+
+ public HashDict(int length=100)
+ {
+ this.length = length;
+ keys = new K[length];
+ values = new V[length];
+ }
+
+ private int SearchInd(K key)
+ {
+ int ind = Math.Abs(key.GetHashCode()) % length;
+ while (keys[ind] != null && keys[ind].CompareTo(key) != 0)
+ ind = (ind + 1) % length;
+ return ind;
+ }
+
+ public V this[K key]
+ {
+ get
+ {
+ int ind = SearchInd(key);
+ if (keys[ind] == null)
+ throw new Exception($"Der Schlüssel {key} wurde nicht gefunden");
+ return values[ind];
+ }
+ set
+ {
+ int ind = SearchInd(key);
+ keys[ind] = key;
+ values[ind] = value;
+ }
+ }
+
+ public IEnumerator<KeyValuePaar<K,V>> GetEnumerator()
+ {
+ for (int i = 0; i < length; i++)
+ if (keys[i] != null)
+ yield return new KeyValuePaar<K,V>(keys[i], values[i]);
+ }
+ public override string ToString()
+ {
+ string res = "";
+ for (int i = 0; i < length; i++)
+ if (keys[i] != null)
+ res += keys[i].ToString() + values[i].ToString() + "\n";
+ return res;
+ }
+ }
+}
diff --git a/10-Ubg HashDict-Di/KeyValuePaar.cs b/10-Ubg HashDict-Di/KeyValuePaar.cs
new file mode 100644
index 0000000..7827ef0
--- /dev/null
+++ b/10-Ubg HashDict-Di/KeyValuePaar.cs
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Text;
+
+namespace _10_Ubg_HashDict_Di
+{
+ // "Wienkop" | 1614
+ class KeyValuePaar<K, V>
+ {
+ public K key;
+ public V val;
+ public KeyValuePaar(K key, V val) { this.key = key;this.val = val; }
+ public override string ToString() => $"{key}: {val}";
+ }
+}
diff --git a/10-Ubg HashDict-Di/Program.cs b/10-Ubg HashDict-Di/Program.cs
new file mode 100644
index 0000000..72eb46e
--- /dev/null
+++ b/10-Ubg HashDict-Di/Program.cs
@@ -0,0 +1,27 @@
+using System;
+
+namespace _10_Ubg_HashDict_Di
+{
+ class Program
+ {
+ static void Main(string[] args)
+ {
+ HashDict<string, string> telbuch = new HashDict<string, string>(10);
+
+ telbuch["Wienkop"] = "1614";
+ telbuch["Otsa"] = "1855";
+ telbuch["xyz"] = "3451";
+
+ Console.WriteLine(telbuch["Wienkop"]);
+ //Console.WriteLine(telbuch["zzz"]);
+ Console.WriteLine("-----------");
+
+ //foreach (var item in telbuch)
+ //{
+ // Console.WriteLine($"Name: {item.key} -- TelNr: {item.val}");
+ //}
+
+ Console.WriteLine(telbuch);
+ }
+ }
+}
diff --git a/10-Ubg HashDict-Mo/HashDict.cs b/10-Ubg HashDict-Mo/HashDict.cs
index aff565d..b439868 100644
--- a/10-Ubg HashDict-Mo/HashDict.cs
+++ b/10-Ubg HashDict-Mo/HashDict.cs
@@ -15,7 +15,7 @@ namespace _10_Ubg_HashDict_Mo
// - indexer-Zugriff (get;set)
// - GetEnumerator()
// - Contains-Methode
- class HashDict<K,V> where K:IComparable<K>
+ class HashDict<K,V> where K:class,IComparable<K>
{
K[] keys;
V[] values;
@@ -28,26 +28,27 @@ namespace _10_Ubg_HashDict_Mo
this.length = length;
}
+ private int SearchInd(K key)
+ {
+ int ind = Math.Abs(key.GetHashCode()) % length;
+ while (keys[ind] != null && keys[ind].CompareTo(key) != 0)
+ ind = (ind + 1) % length;
+ return ind;
+ }
public V this[K key]
{
get
{
- int ind= Math.Abs(key.GetHashCode()) % length;
- while (keys[ind] != null && keys[ind].CompareTo(key) != 0)
- ind = (ind + 1) % length;
-
+ int ind = SearchInd(key);
if (keys[ind] == null)
throw new Exception($"Der Schlüssel {key} wurde nicht gefunden");
return values[ind];
}
set
{
- int ind = Math.Abs(key.GetHashCode()) % length;
- while (keys[ind] != null && keys[ind].CompareTo(key) != 0)
- ind = (ind + 1) % length;
-
+ int ind = SearchInd(key);
keys[ind] = key;
- values[ind] = value;
+ values[ind] = value;
}
}
public IEnumerator<KeyValuePaar<K, V>> GetEnumerator()
diff --git a/10-Ubg HashDict-Mo/Program.cs b/10-Ubg HashDict-Mo/Program.cs
index bae822c..3cee4e7 100644
--- a/10-Ubg HashDict-Mo/Program.cs
+++ b/10-Ubg HashDict-Mo/Program.cs
@@ -23,7 +23,7 @@ namespace _10_Ubg_HashDict_Mo
foreach (var item in telbuch)
{
Console.WriteLine($"Name: {item.key} -- TelNr: {item.val}");
- }
+ }
}
}
}
diff --git a/Prog2WienkopSS2021.sln b/Prog2WienkopSS2021.sln
index c77393c..146b443 100644
--- a/Prog2WienkopSS2021.sln
+++ b/Prog2WienkopSS2021.sln
@@ -77,9 +77,13 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "09-3 Intro Delegates", "09-
EndProject
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "10-Ubg HashDict-Mo", "10-Ubg HashDict-Mo\10-Ubg HashDict-Mo.csproj", "{BA4D6CD1-7029-4E45-B719-9FC1D5B17C71}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "10-2 DelegateVariable", "10-1 DelegateVariable\10-2 DelegateVariable.csproj", "{675BC204-45BA-4E76-80D3-5899EF960624}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "10-2 DelegateVariable", "10-1 DelegateVariable\10-2 DelegateVariable.csproj", "{675BC204-45BA-4E76-80D3-5899EF960624}"
EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "10-1 GenerischeListeMitSuche", "10-1 GenerischeListeMitSuche\10-1 GenerischeListeMitSuche.csproj", "{7B5C0DC3-41F0-4917-A84B-6C4B3A4D9E3F}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "10-1 GenerischeListeMitSuche", "10-1 GenerischeListeMitSuche\10-1 GenerischeListeMitSuche.csproj", "{7B5C0DC3-41F0-4917-A84B-6C4B3A4D9E3F}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "10-Ubg HashDict-Di", "10-Ubg HashDict-Di\10-Ubg HashDict-Di.csproj", "{C903192E-44CA-42C3-A136-65E13026ECB1}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "10-3 WpfButton", "10-3 WpfButton\10-3 WpfButton.csproj", "{11636803-CB01-4A29-ADAE-F03F3F38ED70}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -243,6 +247,14 @@ Global
{7B5C0DC3-41F0-4917-A84B-6C4B3A4D9E3F}.Debug|Any CPU.Build.0 = Debug|Any CPU
{7B5C0DC3-41F0-4917-A84B-6C4B3A4D9E3F}.Release|Any CPU.ActiveCfg = Release|Any CPU
{7B5C0DC3-41F0-4917-A84B-6C4B3A4D9E3F}.Release|Any CPU.Build.0 = Release|Any CPU
+ {C903192E-44CA-42C3-A136-65E13026ECB1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {C903192E-44CA-42C3-A136-65E13026ECB1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {C903192E-44CA-42C3-A136-65E13026ECB1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {C903192E-44CA-42C3-A136-65E13026ECB1}.Release|Any CPU.Build.0 = Release|Any CPU
+ {11636803-CB01-4A29-ADAE-F03F3F38ED70}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {11636803-CB01-4A29-ADAE-F03F3F38ED70}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {11636803-CB01-4A29-ADAE-F03F3F38ED70}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {11636803-CB01-4A29-ADAE-F03F3F38ED70}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
--
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