记录一下一个比较通用的做法 线程中访问控件。

private delegate void SetWebBorswerText(string value);        private void SetValue(string value)        {            if (this.InvokeRequired)            {                SetWebBorswerText d = new SetWebBorswerText(SetValue);                object arg = (object)value;                this.Invoke(d, arg);            }            else            {                this.webBrowser1.DocumentText = value;            }        }        private delegate string GetTextHandle(TextBox control);        private string GetText(TextBox control)        {            if (this.InvokeRequired)            {                return (string)this.Invoke(new GetTextHandle(this.GetText), control);            }            else            {                return ((TextBox)control).Text;            }        }