string cat and singeltonpattern

WindowsFormsApp01/ClassLibrary01/Class1.cs

@@ -1,14 +1,21 @@
 using System;
 using System.Collections.Generic;
+using System.Drawing;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
 namespace ClassLibrary01
 {
-    public class Class1
+    public class Class1 :IDisposable
     {
 
+
+        public void DoIt()
+        {
+            var foo = SingeltonPattern.GetInstance();
+        }
+
         public int Add(int i1, int i2 = 10)
         {
             return i1 + i2;
@@ -19,5 +26,20 @@ namespace ClassLibrary01
             return Add(i1, 10);
         }
 
+        private Pen _pen;
+
+        public void Dispose()
+        {
+            _pen.Dispose();
+        }
+
+
+        public Pen getPen()
+        {
+
+            _pen = new Pen(Color.Black, 2);
+
+            return _pen;
+        }
     }
 }

WindowsFormsApp01/ClassLibrary01/ClassLibrary01.csproj

@@ -1,10 +1,10 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProjectGuid>4859a826-18e2-4c0c-a441-f77975e70e93</ProjectGuid>
+    <ProjectGuid>{4859A826-18E2-4C0C-A441-F77975E70E93}</ProjectGuid>
     <OutputType>Library</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>ClassLibrary01</RootNamespace>
@@ -31,24 +31,20 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="System"/>
-    
-    <Reference Include="System.Core"/>
-    <Reference Include="System.Xml.Linq"/>
-    <Reference Include="System.Data.DataSetExtensions"/>
-    
-    
-    <Reference Include="Microsoft.CSharp"/>
-    
-    <Reference Include="System.Data"/>
-    
-    <Reference Include="System.Net.Http"/>
-    
-    <Reference Include="System.Xml"/>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Class1.cs" />
+    <Compile Include="CodeFile1.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
- </Project>
+</Project>

WindowsFormsApp01/ClassLibrary01/CodeFile1.cs

@@ -0,0 +1,33 @@
+
+using System.Runtime.CompilerServices;
+
+public class SingeltonPattern
+{
+
+
+
+    private static SingeltonPattern _singelton;
+
+
+    private SingeltonPattern()
+    {
+
+    }
+
+
+    public static SingeltonPattern GetInstance()
+    {
+        if (_singelton == null)
+        {
+            _singelton = new SingeltonPattern();
+        }
+
+        return _singelton;
+
+    }
+
+
+}
+
+
+

WindowsFormsApp01/ClassLibrary01/obj/Debug/ClassLibrary01.csproj.CoreCompileInputs.cache

@@ -1 +1 @@
-69d79abfd67c28b98a7f19e87fceac8121786190
+165664fdbdaecd0156134d10b5983b1832f42627

WindowsFormsApp01/ClassLibrary01/obj/Debug/ClassLibrary01.csproj.FileListAbsolute.txt

@@ -4,3 +4,9 @@ C:\Users\root\source\repos\WindowsFormsApp01\ClassLibrary01\obj\Debug\ClassLibra
 C:\Users\root\source\repos\WindowsFormsApp01\ClassLibrary01\obj\Debug\ClassLibrary01.csproj.CoreCompileInputs.cache
 C:\Users\root\source\repos\WindowsFormsApp01\ClassLibrary01\obj\Debug\ClassLibrary01.dll
 C:\Users\root\source\repos\WindowsFormsApp01\ClassLibrary01\obj\Debug\ClassLibrary01.pdb
+C:\Users\root\source\SoftwareEngineering2\WindowsFormsApp01\ClassLibrary01\bin\Debug\ClassLibrary01.dll
+C:\Users\root\source\SoftwareEngineering2\WindowsFormsApp01\ClassLibrary01\bin\Debug\ClassLibrary01.pdb
+C:\Users\root\source\SoftwareEngineering2\WindowsFormsApp01\ClassLibrary01\obj\Debug\ClassLibrary01.csprojAssemblyReference.cache
+C:\Users\root\source\SoftwareEngineering2\WindowsFormsApp01\ClassLibrary01\obj\Debug\ClassLibrary01.csproj.CoreCompileInputs.cache
+C:\Users\root\source\SoftwareEngineering2\WindowsFormsApp01\ClassLibrary01\obj\Debug\ClassLibrary01.dll
+C:\Users\root\source\SoftwareEngineering2\WindowsFormsApp01\ClassLibrary01\obj\Debug\ClassLibrary01.pdb

WindowsFormsApp01/WindowsFormsApp01/Form1.Designer.cs

@@ -34,6 +34,10 @@
             this.label1 = new System.Windows.Forms.Label();
             this.panel1 = new System.Windows.Forms.Panel();
             this.trackBar1 = new System.Windows.Forms.TrackBar();
+            this.button2 = new System.Windows.Forms.Button();
+            this.button3 = new System.Windows.Forms.Button();
+            this.label2 = new System.Windows.Forms.Label();
+            this.label3 = new System.Windows.Forms.Label();
             ((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.numericUpDown2)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).BeginInit();
@@ -76,11 +80,16 @@
             // 
             // panel1
             // 
+            this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+            | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.panel1.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
             this.panel1.BackColor = System.Drawing.Color.DimGray;
             this.panel1.Location = new System.Drawing.Point(264, 125);
             this.panel1.Name = "panel1";
             this.panel1.Size = new System.Drawing.Size(512, 256);
             this.panel1.TabIndex = 4;
+            this.panel1.AutoSizeChanged += new System.EventHandler(this.Panel1_AutoSizeChanged);
             this.panel1.Paint += new System.Windows.Forms.PaintEventHandler(this.Panel1_Paint);
             // 
             // trackBar1
@@ -95,13 +104,55 @@
             this.trackBar1.Value = 1;
             this.trackBar1.Scroll += new System.EventHandler(this.TrackBar1_Scroll);
             // 
+            // button2
+            // 
+            this.button2.Location = new System.Drawing.Point(24, 246);
+            this.button2.Name = "button2";
+            this.button2.Size = new System.Drawing.Size(75, 23);
+            this.button2.TabIndex = 6;
+            this.button2.Text = "cat_slow";
+            this.button2.UseVisualStyleBackColor = true;
+            this.button2.Click += new System.EventHandler(this.Button2_Click);
+            // 
+            // button3
+            // 
+            this.button3.Location = new System.Drawing.Point(152, 246);
+            this.button3.Name = "button3";
+            this.button3.Size = new System.Drawing.Size(75, 23);
+            this.button3.TabIndex = 7;
+            this.button3.Text = "cat_fast";
+            this.button3.UseVisualStyleBackColor = true;
+            this.button3.Click += new System.EventHandler(this.Button3_Click);
+            // 
+            // label2
+            // 
+            this.label2.AutoSize = true;
+            this.label2.Location = new System.Drawing.Point(170, 299);
+            this.label2.Name = "label2";
+            this.label2.Size = new System.Drawing.Size(35, 13);
+            this.label2.TabIndex = 8;
+            this.label2.Text = "label2";
+            // 
+            // label3
+            // 
+            this.label3.AutoSize = true;
+            this.label3.Location = new System.Drawing.Point(43, 299);
+            this.label3.Name = "label3";
+            this.label3.Size = new System.Drawing.Size(35, 13);
+            this.label3.TabIndex = 9;
+            this.label3.Text = "label3";
+            // 
             // Form1
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-            this.AutoSize = true;
+            this.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
             this.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
             this.ClientSize = new System.Drawing.Size(800, 450);
+            this.Controls.Add(this.label3);
+            this.Controls.Add(this.label2);
+            this.Controls.Add(this.button3);
+            this.Controls.Add(this.button2);
             this.Controls.Add(this.trackBar1);
             this.Controls.Add(this.panel1);
             this.Controls.Add(this.label1);
@@ -112,6 +163,7 @@
             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
             this.Text = "Form1";
             this.Load += new System.EventHandler(this.Form1_Load);
+            this.Resize += new System.EventHandler(this.Form1_Resize);
             ((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).EndInit();
             ((System.ComponentModel.ISupportInitialize)(this.numericUpDown2)).EndInit();
             ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).EndInit();
@@ -128,6 +180,10 @@
         private System.Windows.Forms.Label label1;
         private System.Windows.Forms.Panel panel1;
         private System.Windows.Forms.TrackBar trackBar1;
+        private System.Windows.Forms.Button button2;
+        private System.Windows.Forms.Button button3;
+        private System.Windows.Forms.Label label2;
+        private System.Windows.Forms.Label label3;
     }
 }
 

WindowsFormsApp01/WindowsFormsApp01/Form1.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Data;
+using System.Diagnostics;
 using System.Drawing;
 using System.Linq;
 using System.Text;
@@ -16,6 +17,8 @@ namespace WindowsFormsApp01
         private int _number;
 
         private int _scale = 1;
+        private int _x;
+        private int _y;
 
         public int Number
         {
@@ -68,31 +71,47 @@ namespace WindowsFormsApp01
             label1.Text = "Ergebnis: " + res.ToString();
         }
 
+
+
+
+
+
+
+       
+
+
+
+
+     
+
         private void Panel1_Paint(object sender, PaintEventArgs e)
         {
             Graphics graphics = e.Graphics;
 
-           
+            Pen _pen = new ClassLibrary01.Class1().getPen();
+
+            using (var p = _pen)
+            {
 
             //y axis
-            graphics.DrawLine(new Pen(Color.Black), 10, 10, 10, 246);
+            graphics.DrawLine(p, 10, 10, 10, 246);
 
             //x axis
-            graphics.DrawLine(new Pen(Color.Black), 10, 246, 502, 246);
+            graphics.DrawLine(p, 10, 246, 502, 246);
 
             //arrow y axis
-            graphics.DrawLine(new Pen(Color.Black), 5, 15, 10, 10);
-            graphics.DrawLine(new Pen(Color.Black), 15, 15, 10, 10);
+            graphics.DrawLine(p, 5, 15, 10, 10);
+            graphics.DrawLine(p, 15, 15, 10, 10);
 
             //arrow x axis
-            graphics.DrawLine(new Pen(Color.Black), 498, 241, 502, 246);
-            graphics.DrawLine(new Pen(Color.Black), 498, 251, 502, 246);
-
+            graphics.DrawLine(p, 498, 241, 502, 246);
+            graphics.DrawLine(p, 498, 251, 502, 246);
+            }
 
             Brush aBrush = (Brush) Brushes.Red;
 
 
-            for (int i = 10; i < 502; i++)
+            for (int i = 10; i < (502 ); i++)
             {
 
                 int y = (int)( 246 - (((Math.Log(i) * 10) - 23) *_scale  ) );
@@ -116,6 +135,69 @@ namespace WindowsFormsApp01
             panel1.Refresh();
         }
 
-     
+        private void Panel1_AutoSizeChanged(object sender, EventArgs e)
+        {
+
+           
+
+        }
+
+        private void Form1_Resize(object sender, EventArgs e)
+        {
+
+            _x = panel1.Width;
+            _y = panel1.Height;
+            panel1.Invalidate();
+        }
+
+        private void Button2_Click(object sender, EventArgs e)
+        {
+            string s1 = "hello";
+
+            string s2 = "Offenburg";
+
+            string s3 = String.Empty;
+
+           Stopwatch sw = new Stopwatch();
+
+           sw.Start();
+
+            for (int i = 0; i < 50000; i++)
+            {
+                 s3 = s3 + s1 + s2;
+            }
+
+            sw.Stop();
+
+            label3.Text = sw.ElapsedMilliseconds.ToString();
+
+        }
+
+        private void Button3_Click(object sender, EventArgs e)
+        {
+
+            string s1 = "hello";
+
+            string s2 = "Offenburg";
+
+            string s3 = String.Empty;
+
+            Stopwatch sw = new Stopwatch();
+            var sb = new StringBuilder();
+
+            sw.Start();
+
+            for (int i = 0; i < 50000; i++)
+            {
+                //s3 = s3 + s1 + s2;
+
+                sb.Append(s1);
+                sb.Append(s2);
+            }
+
+            sw.Stop();
+
+            label2.Text = sw.ElapsedMilliseconds.ToString();
+        }
     }
 }