设备对接动态获取图片不能动态切换问题

2019-04-15 16:45发布

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问题描述：通过和身份证读卡器对接获取基本信息和身份证照片信息，但切换身份证时，基本信息能随动变化，但照片不会。

代码：

xaml:

C#:using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using AlarmCenter.GWUserControlLibrary; using AlarmCenter.GWWPFControls; using AlarmCenter.GWWpfCustomControlLibrary; using AlarmCenter.DataCenter; using System.Windows.Threading; using System.IO; namespace IdCardReaderWPF { /// /// UserControl1.xaml 的交互逻辑 /// public partial class HomePage : GWPageContentControl { //创建一个定时器 DispatcherTimer timer = new DispatcherTimer(); //初始化连接所需的USB或者COM端口 int iRetUSB = 3; int iRetCOM = 3; //相片的URL public string uri = "D:/AlarmCenter/bin/zp.bmp"; public HomePage() { InitializeComponent(); timer.Tick += new EventHandler(timer_Tick); timer.Interval = TimeSpan.FromMilliseconds(1000);//设置定时器循环时间 timer.Start();//开启定时器 } private void timer_Tick(object sender, EventArgs e) { //若初始化连接成功 if (initComm()) { authenticateAndReadSat.Text = string.Concat("初始化连接成功", DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss")); //若卡认证和读卡成功 if (authenticateAndRead()) { authenticateAndReadSat.Text = string.Concat("卡认证和读卡成功", DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss")); fillData(); } else { authenticateAndReadSat.Text = string.Concat("卡认证和读卡失败", DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss")); } } else { authenticateAndReadSat.Text = string.Concat("初始化连接失败", DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss")); } } private Boolean initComm() { bool flag_InitComm = false; try { int iPort; for (iPort = 1001; iPort <= 1016; iPort++) { iRetUSB = CVRSDK.CVR_InitComm(iPort); if (iRetUSB == 1) { break; } } if (iRetUSB != 1) { for (iPort = 1; iPort <= 4; iPort++) { iRetCOM = CVRSDK.CVR_InitComm(iPort); if (iRetCOM == 1) { break; } } } if ((iRetCOM == 1) || (iRetUSB == 1)) { flag_InitComm = true; } } catch (Exception e) { exceptionText.Text = string.Concat("CVR_InitComm-catchException:", e.ToString()); return flag_InitComm; } return flag_InitComm; } private Boolean authenticateAndRead() { bool flag_authenticateAndRead = false; int authenticate = CVRSDK.CVR_Authenticate(); // 若认证卡成功，才开始读卡 if (authenticate == 1) { checkImagExist(); int readContent = CVRSDK.CVR_Read_Content(4); if (readContent == 1) { flag_authenticateAndRead = true;//读卡操作成功 } } return flag_authenticateAndRead; } private void checkImagExist() { string filename = "D:\AlarmCenter\bin\zp.bmp"; //若存在该文件，则删除该文件 if (File.Exists(filename)) { try { File.Delete(filename); } catch (Exception e) { exceptionText.Text = string.Concat("checkImagExist-catchException:", e.ToString()); } } } public void fillData() { try { byte[] name = new byte[30]; int length = 30; CVRSDK.GetPeopleName(ref name[0], ref length); //MessageBox.Show(); byte[] number = new byte[30]; length = 36; CVRSDK.GetPeopleIDCode(ref number[0], ref length); byte[] people = new byte[30]; length = 3; CVRSDK.GetPeopleNation(ref people[0], ref length); byte[] validtermOfStart = new byte[30]; length = 16; CVRSDK.GetStartDate(ref validtermOfStart[0], ref length); byte[] birthday = new byte[30]; length = 16; CVRSDK.GetPeopleBirthday(ref birthday[0], ref length); byte[] address = new byte[30]; length = 70; CVRSDK.GetPeopleAddress(ref address[0], ref length); byte[] validtermOfEnd = new byte[30]; length = 16; CVRSDK.GetEndDate(ref validtermOfEnd[0], ref length); byte[] signdate = new byte[30]; length = 30; CVRSDK.GetDepartment(ref signdate[0], ref length); byte[] sex = new byte[30]; length = 3; CVRSDK.GetPeopleSex(ref sex[0], ref length); byte[] samid = new byte[32]; CVRSDK.CVR_GetSAMID(ref samid[0]); BitmapImage bitmapImage = new BitmapImage(); //初始化BitmapImage类的一个新实例 bitmapImage.BeginInit(); //表示BitmapImage初始化开始 bitmapImage.CacheOption = BitmapCacheOption.OnLoad; bitmapImage.UriSource = new Uri(uri);//获取或设置BitmapImage的Uri源 bitmapImage.EndInit();//表示BitmapImage初始化结束 image1.Source = bitmapImage; //姓名 name_TextBox.Text = System.Text.Encoding.GetEncoding("GB2312").GetString(name).Replace("

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