/// <summary>  
        /// 方法委托  
        /// </summary>  
        /// <param name="dwEnrollNum"></param>  
        /// <param name="enrolldata"></param>  
        /// <param name="dwMachineID"></param>  
        public delegate void GetFingerInfor_Delegate(string dwEnrollNum, string enrolldata, int dwMachineID);  
        /// <summary>  
        /// 为控件赋值  
        /// </summary>  
        /// <param name="dwEnrollNum"></param>  
        /// <param name="enrolldata"></param>  
        /// <param name="dwMachineID"></param>  
        public void GetFingerInfor(string dwEnrollNum, string enrolldata, int dwMachineID)  
        {  
            try  
            {  
                Btn_Read.Text = "读取指纹";  
                txt_id.Text = dwEnrollNum;  
                txt_fingerprint.Text = enrolldata;  
                //关闭监听  
                bool b_end = Fingerprint.EndListen(axSB100PC1, dwMachineID);  
            }  
            catch (Exception ex)  
            {  
                string str_ex = ex.ToString();  
            }  
        }  

//调用方法  
GetFingerInfor_Delegate fingerInfor = new GetFingerInfor_Delegate(GetFingerInfor);  
this.BeginInvoke(fingerInfor, new object[] { dwEnrollNum.ToString(), enrolldata, dwMachineID });