events in WFA01

WindowsFormsApp01/WindowsFormsApp01/Form1.Designer.cs

@@ -38,6 +38,9 @@
             this.button3 = new System.Windows.Forms.Button();
             this.label2 = new System.Windows.Forms.Label();
             this.label3 = new System.Windows.Forms.Label();
+            this.button4 = new System.Windows.Forms.Button();
+            this.label4 = new System.Windows.Forms.Label();
+            this.label5 = new System.Windows.Forms.Label();
             ((System.ComponentModel.ISupportInitialize)(this.numericUpDown1)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.numericUpDown2)).BeginInit();
             ((System.ComponentModel.ISupportInitialize)(this.trackBar1)).BeginInit();
@@ -142,6 +145,34 @@
             this.label3.TabIndex = 9;
             this.label3.Text = "label3";
             // 
+            // button4
+            // 
+            this.button4.Location = new System.Drawing.Point(356, 57);
+            this.button4.Name = "button4";
+            this.button4.Size = new System.Drawing.Size(75, 23);
+            this.button4.TabIndex = 10;
+            this.button4.Text = "button4";
+            this.button4.UseVisualStyleBackColor = true;
+            this.button4.Click += new System.EventHandler(this.Button4_Click);
+            // 
+            // label4
+            // 
+            this.label4.AutoSize = true;
+            this.label4.Location = new System.Drawing.Point(592, 66);
+            this.label4.Name = "label4";
+            this.label4.Size = new System.Drawing.Size(35, 13);
+            this.label4.TabIndex = 11;
+            this.label4.Text = "label4";
+            // 
+            // label5
+            // 
+            this.label5.AutoSize = true;
+            this.label5.Location = new System.Drawing.Point(700, 88);
+            this.label5.Name = "label5";
+            this.label5.Size = new System.Drawing.Size(35, 13);
+            this.label5.TabIndex = 12;
+            this.label5.Text = "label5";
+            // 
             // Form1
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
@@ -149,6 +180,9 @@
             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.label5);
+            this.Controls.Add(this.label4);
+            this.Controls.Add(this.button4);
             this.Controls.Add(this.label3);
             this.Controls.Add(this.label2);
             this.Controls.Add(this.button3);
@@ -184,6 +218,9 @@
         private System.Windows.Forms.Button button3;
         private System.Windows.Forms.Label label2;
         private System.Windows.Forms.Label label3;
+        private System.Windows.Forms.Button button4;
+        private System.Windows.Forms.Label label4;
+        private System.Windows.Forms.Label label5;
     }
 }
 

WindowsFormsApp01/WindowsFormsApp01/Form1.cs

@@ -52,6 +52,8 @@ namespace WindowsFormsApp01
         {
             InitializeComponent();
             label1.Text = " ";
+
+            calc.CalcFinished += CalcFinished;
         }
 
         private void Button1_Click(object sender, EventArgs e)
@@ -72,18 +74,6 @@ namespace WindowsFormsApp01
         }
 
 
-
-
-
-
-
-       
-
-
-
-
-     
-
         private void Panel1_Paint(object sender, PaintEventArgs e)
         {
             Graphics graphics = e.Graphics;
@@ -92,29 +82,27 @@ namespace WindowsFormsApp01
 
             using (var p = _pen)
             {
+                //y axis
+                graphics.DrawLine(p, 10, 10, 10, 246);
 
-            //y axis
-            graphics.DrawLine(p, 10, 10, 10, 246);
+                //x axis
+                graphics.DrawLine(p, 10, 246, 502, 246);
 
-            //x axis
-            graphics.DrawLine(p, 10, 246, 502, 246);
+                //arrow y axis
+                graphics.DrawLine(p, 5, 15, 10, 10);
+                graphics.DrawLine(p, 15, 15, 10, 10);
 
-            //arrow y axis
-            graphics.DrawLine(p, 5, 15, 10, 10);
-            graphics.DrawLine(p, 15, 15, 10, 10);
-
-            //arrow x axis
-            graphics.DrawLine(p, 498, 241, 502, 246);
-            graphics.DrawLine(p, 498, 251, 502, 246);
+                //arrow x axis
+                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  ) );
+                int y = (int) (246 - (((Math.Log(i) * 10) - 23) * _scale));
 
                 graphics.FillRectangle(aBrush, i, y, 2, 2);
             }
@@ -129,7 +117,6 @@ namespace WindowsFormsApp01
 
         private void TrackBar1_Scroll(object sender, EventArgs e)
         {
-
             _scale = (int) trackBar1.Value;
 
             panel1.Refresh();
@@ -137,14 +124,10 @@ namespace WindowsFormsApp01
 
         private void Panel1_AutoSizeChanged(object sender, EventArgs e)
         {
-
-           
-
         }
 
         private void Form1_Resize(object sender, EventArgs e)
         {
-
             _x = panel1.Width;
             _y = panel1.Height;
             panel1.Invalidate();
@@ -158,24 +141,22 @@ namespace WindowsFormsApp01
 
             string s3 = String.Empty;
 
-           Stopwatch sw = new Stopwatch();
+            Stopwatch sw = new Stopwatch();
 
-           sw.Start();
+            sw.Start();
 
             for (int i = 0; i < 50000; i++)
             {
-                 s3 = s3 + s1 + s2;
+                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";
@@ -199,5 +180,48 @@ namespace WindowsFormsApp01
 
             label2.Text = sw.ElapsedMilliseconds.ToString();
         }
+
+        private void Button4_Click(object sender, EventArgs e)
+        {
+            calc.CalcIt();
+        }
+
+        public void CalcFinished(CalcEventArgs e)
+        {
+            label4.Text = e.Result.ToString();
+        }
+    }
+
+    public class CalcEventArgs
+    {
+        public CalcEventArgs(int result)
+        {
+            Result = result;
+        }
+
+        public int Result { get; private set; }
+    }
+
+
+    public static class calc
+    {
+        public delegate void CalcEventHandler(CalcEventArgs e);
+
+        public static event CalcEventHandler CalcFinished;
+
+
+        public static void CalcIt()
+        {
+            int res = DateTime.Now.Second;
+
+
+            var e = new CalcEventArgs(res);
+            //trigger handler
+
+            if (CalcFinished != null)
+            {
+                CalcFinished(e);
+            }
+        }
     }
 }