Add csharp

csharp

@@ -0,0 +1,11 @@
+// Threading in C# - Invoking Methods (if required)
+public static void InvokeIfRequired(this Control c, Action a) {
+    if (c.InvokeRequired) {
+        c.Invoke(new MethodInvoker(() => { InvokeIfRequired(c, a); }));
+        return;
+    }
+    try {
+        if (!c.IsHandleCreated) { IntPtr i = c.Handle; }    // See links above - handle is not created, will cause cross-thread exceptions
+        a.Invoke();
+    } catch (Exception ex) { }
+}