/// <summary>
        /// 在winform中执行JS代码
        /// </summary>
        /// <param name="func"></param>
        /// <param name="param"></param>
        /// <returns></returns>
        public object ExecJSfuncion(string func, object[] param)
        {
            return this.webBrowser1.Document.InvokeScript(func, param);
        }

------解决方案--------------------
C# code

[PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
    [System.Runtime.InteropServices.ComVisibleAttribute(true)]
    public partial class MainForm : Form