convert VB to C#

Pilz.UI/Utilities/DrawingControl.cs

@@ -0,0 +1,26 @@
+using global::System.Windows.Forms;
+
+namespace Pilz.UI.Utils
+{
+    public static class DrawingControl
+    {
+        private const int WM_SETREDRAW = 11;
+
+        public static void SuspendDrawing(this Control control)
+        {
+            User32Bridge.SendMessage(control.Handle, WM_SETREDRAW, false, 0);
+        }
+
+        public static void ResumeDrawing(this Control control)
+        {
+            control.ResumeDrawing(true);
+        }
+
+        public static void ResumeDrawing(this Control control, bool redraw)
+        {
+            User32Bridge.SendMessage(control.Handle, WM_SETREDRAW, true, 0);
+            if (redraw)
+                control.Refresh();
+        }
+    }
+}

Pilz.UI/Utilities/DrawingControl.vb

@@ -1,28 +0,0 @@
-Imports System.Runtime.CompilerServices
-Imports System.Windows.Forms
-
-Namespace Utils
-
-    Public Module DrawingControl
-
-        Private Const WM_SETREDRAW = 11
-
-        <Extension>
-        Public Sub SuspendDrawing(control As Control)
-            SendMessage(control.Handle, WM_SETREDRAW, False, 0)
-        End Sub
-
-        <Extension>
-        Public Sub ResumeDrawing(control As Control)
-            ResumeDrawing(control, True)
-        End Sub
-
-        <Extension>
-        Public Sub ResumeDrawing(control As Control, redraw As Boolean)
-            SendMessage(control.Handle, WM_SETREDRAW, True, 0)
-            If redraw Then control.Refresh()
-        End Sub
-
-    End Module
-
-End Namespace

Pilz.UI/Utilities/User32Bridge.cs

@@ -0,0 +1,11 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Pilz.UI
+{
+    public static class User32Bridge
+    {
+        [DllImport("user32.dll", CharSet = CharSet.Auto)]
+        internal static extern int SendMessage(IntPtr hWnd, int Msg, bool wParam, int lParam);
+    }
+}

Pilz.UI/Utilities/User32Bridge.vb

@@ -1,5 +0,0 @@
-Public Module User32Bridge
-
-    Friend Declare Auto Function SendMessage Lib "user32.dll" (hWnd As IntPtr, Msg As Integer, wParam As Boolean, lParam As Integer) As Integer
-
-End Module