CefSharp.MinimalExample/CefSharp.MinimalExample.WinForms/Controls/ControlExtensions.cs

// Copyright © 2010-2015 The CefSharp Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

using System;
using System.Windows.Forms;

namespace CefSharp.MinimalExample.WinForms.Controls
{
    public static class ControlExtensions
    {
        /// <summary>
        /// Executes the Action asynchronously on the UI thread, does not block execution on the calling thread.
        /// </summary>
        /// <param name="control">the control for which the update is required</param>
        /// <param name="action">action to be performed on the control</param>
        public static void InvokeOnUiThreadIfRequired(this Control control, Action action)
        {
            //If you are planning on using a similar function in your own code then please be sure to
            //have a quick read over https://stackoverflow.com/questions/1874728/avoid-calling-invoke-when-the-control-is-disposed
            //No action
            if (control.Disposing || control.IsDisposed || !control.IsHandleCreated)
            {
                return;
            }

            if (control.InvokeRequired)
            {
                control.BeginInvoke(action);
            }
            else
            {
                action.Invoke();
            }
        }
    }
}