/// <summary> /// 从"独立存贮空间"取程序第一次运行的时间并解密 /// </summary> /// <returns></returns> public static string GetDataTime() { string fromDataTime; //按用户、域、程序集获取独立存储区 var isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User | IsolatedStorageScope.Domain | IsolatedStorageScope.Assembly, null, null); var myusername = isoStore.GetDirectoryNames(UiConstants.IsolatedStorageDirectoryName); if (myusername.Length == 0) //没有文件夹 { return(string.Empty); //域中没有他的目录 } myusername = isoStore.GetFileNames(UiConstants.IsolatedStorage); if (myusername.Length == 0) //没有文件 { return(string.Empty); //域中没有他的用户名 } else { using (var isoStream1 = new IsolatedStorageFileStream(UiConstants.IsolatedStorage, FileMode.OpenOrCreate, isoStore)) { using (var reader = new StreamReader(isoStream1)) { fromDataTime = reader.ReadLine(); } } if (!string.IsNullOrEmpty(fromDataTime)) //解密 { try { fromDataTime = DesEncrypt.Decrypt(fromDataTime, UiConstants.IsolatedStorageEncryptKey); } catch { } } return(fromDataTime); } }
/// <summary> /// 加密并保存当前时间到"独立存贮空间" (以分号(;)追加保存) /// </summary> public static void SaveDataTime(DateTime fromDate) { var fromDataTime = fromDate.ToString("MM-dd-yyyy HH:mm:ss"); var oldTime = GetDataTime().Trim(); if (!string.IsNullOrEmpty(oldTime)) { fromDataTime = oldTime + ";" + fromDataTime; //追加最后时间到左边 } fromDataTime = DesEncrypt.Encrypt(fromDataTime, UiConstants.IsolatedStorageEncryptKey); //加密 #region 将fromDataTime保存在"独立存贮空间" var username = fromDataTime; //按用户、域、程序集获取独立存储区 var isoStore = IsolatedStorageFile.GetStore( IsolatedStorageScope.User | IsolatedStorageScope.Domain | IsolatedStorageScope.Assembly, null, null); var myusername = isoStore.GetDirectoryNames(UiConstants.IsolatedStorageDirectoryName); IsolatedStorageFileStream isoStream1 = null; if (myusername.Length == 0) //没有目录 { //创建目录 isoStore.CreateDirectory(UiConstants.IsolatedStorageDirectoryName); //创建文件 using (isoStream1 = new IsolatedStorageFileStream(UiConstants.IsolatedStorage, FileMode.Create, isoStore)) { //写入文件 using (var writer = new StreamWriter(isoStream1)) { writer.WriteLine(fromDataTime); } } } else { myusername = isoStore.GetFileNames(UiConstants.IsolatedStorage); if (myusername.Length == 0) //没有文件 { //创建文件 using (isoStream1 = new IsolatedStorageFileStream(UiConstants.IsolatedStorage, FileMode.Create, isoStore)) { //写入文件 using (var writer = new StreamWriter(isoStream1)) { writer.WriteLine(fromDataTime); } } } else { using (isoStream1 = new IsolatedStorageFileStream(UiConstants.IsolatedStorage, FileMode.Open, isoStore)) { //写入文件 using (var writer = new StreamWriter(isoStream1)) { writer.WriteLine(fromDataTime); } } } } #endregion }