convert VB to C#

Pilz.Drawing/HelpfulDrawingFunctions.cs

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+using System.Collections.Generic;
+using System.Data;
+using global::System.Drawing;
+using System.Linq;
+
+namespace Pilz.Drawing
+{
+    public static class HelpfulDrawingFunctions
+    {
+        public static bool IsPointInRectangle(PointF p, RectangleF rect)
+        {
+            var bList = new List<bool>();
+            bList.Add(p.X > rect.Left);
+            bList.Add(p.X < rect.Right);
+            bList.Add(p.Y > rect.Top);
+            bList.Add(p.Y < rect.Bottom);
+            return !bList.Contains(false);
+        }
+
+        public static bool OverlapsTwoRectangles(RectangleF a, RectangleF b)
+        {
+            return a.IntersectsWith(b); // RectangleF.Intersect(a, b) <> RectangleF.Empty
+        }
+
+        public static bool RectangleContainsRectangle(RectangleF parent, RectangleF child)
+        {
+            return parent.Contains(child);
+            // Return _
+            // IsPointInRectangle(New PointF(child.Top, child.Left), parent) AndAlso
+            // IsPointInRectangle(New PointF(child.Top, child.Right), parent) AndAlso
+            // IsPointInRectangle(New PointF(child.Bottom, child.Left), parent) AndAlso
+            // IsPointInRectangle(New PointF(child.Bottom, child.Right), parent)
+        }
+
+        public static RectangleF GetRectangle(PointF p1, PointF p2)
+        {
+            var rect = new RectangleF();
+            bool startIsEnd = p1.X > p2.X && p1.Y > p2.Y;
+            var xValues = new int[] { (int)p1.X, (int)p2.X };
+            var yValues = new int[] { (int)p1.Y, (int)p2.Y };
+            rect.Location = new PointF(xValues.OrderBy(n => n).First(), yValues.OrderBy(n => n).First());
+            rect.Size = new SizeF(xValues.OrderByDescending(n => n).First(), yValues.OrderByDescending(n => n).First());
+            rect.Size = new SizeF(rect.Size.Width - rect.Location.X, rect.Size.Height - rect.Location.Y);
+            return rect;
+        }
+    }
+}