Std.Threading.cs

using System;
using System.Windows.Forms;

namespace Std
{
	public static class Threading
	{
        /// <summary>
        /// Invoking method with thread safe.
        /// </summary>
        /// <param name="ctrl">Control</param>
        /// <param name="delg">Delegate</param>
        /// <param name="args">Arguments</param>
        /// <returns>object</returns>
        public static object SafeOperate(this Control ctrl, Delegate delg, params object[] args)
        {
            if (ctrl == null || delg == null || ctrl.IsDisposed || !ctrl.IsHandleCreated)
                return null;
            try
            {
                if (ctrl.InvokeRequired)
                    return ctrl.Invoke(delg, args);
                else
                    return delg.DynamicInvoke(args);
            }
            catch (InvalidOperationException) { return null; }
        }

        /// <summary>
        /// Invoking method thread safely.
        /// </summary>
        /// <param name="ctrl">Control</param>
        /// <param name="delg">Action delegate</param>
        /// <returns>object</returns>
        public static object SafeOperate(this Control ctrl, Action delg)
        {
            return SafeOperate(ctrl, delg, null);
        }

        /// <summary>
        /// Invoking method thread safely.
        /// </summary>
        /// <param name="ctrl">Form</param>
        /// <param name="delg">Action&lt;T&gt; delegate</param>
        /// <param name="args">Arguments</param>
        /// <returns>object</returns>
        public static object SafeOperate<T>(this Control ctrl, Action<T> delg, T args)
        {
            if (ctrl == null || delg == null || ctrl.IsDisposed || !ctrl.IsHandleCreated)
                return null;
            if (ctrl.IsDisposed || !ctrl.IsHandleCreated)
                return null;
            if (ctrl.InvokeRequired)
                return ctrl.Invoke(delg, args);
            else
                return delg.DynamicInvoke(args);
        }
    }
}