/// <summary>
/// XML序列化并对文件进行加密
/// </summary>
/// <param name="path">文件路径</param>
/// <param name="obj">对象实例</param>
/// <param name="type">对象类型</param>
/// <returns></returns>
public bool XmlSerializeEncrypt(string path, object obj, Type type)
{
XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add("", "");
try
{
if (!File.Exists(path))
{
FileInfo fi = new FileInfo(path);
if (!fi.Directory.Exists)
{
Directory.CreateDirectory(fi.Directory.FullName);
}
}
using (Stream stream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None))
{
string content = "";
using (MemoryStream ms = new MemoryStream())
{
XmlSerializer format = new XmlSerializer(type);
format.Serialize(ms, obj, ns);
ms.Seek(0, 0);
content = Encoding.ASCII.GetString(ms.ToArray());
}
string encrypt = EncodeHelper.EncryptString(content);
byte[] bytes = UTF8Encoding.Default.GetBytes(encrypt);
stream.Write(bytes, 0, bytes.Length);
stream.Close();
}
return(true);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(false);
}
}
/// <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
IsolatedStorageFile isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User
| IsolatedStorageScope.Domain | IsolatedStorageScope.Assembly, null, null);
string[] 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 (IsolatedStorageFileStream isoStream1 = new IsolatedStorageFileStream(UIConstants.IsolatedStorage, FileMode.OpenOrCreate, isoStore))
{
using (StreamReader reader = new StreamReader(isoStream1))
{
fromDataTime = reader.ReadLine();
}
}
if (!string.IsNullOrEmpty(fromDataTime)) //解密
{
try
{
fromDataTime = EncodeHelper.DesDecrypt(fromDataTime, UIConstants.IsolatedStorageEncryptKey);
}
catch
{
}
}
return(fromDataTime);
}
}
/// <summary>
/// XML反序列化并解密
/// </summary>
/// <param name="path">文件路径</param>
/// <param name="type">对象类型</param>
/// <returns></returns>
public object XmlDeserializeDecrypt(string path, Type type)
{
try
{
string encrypt = File.ReadAllText(path, Encoding.UTF8);
string content = EncodeHelper.DecryptString(encrypt, true);
byte[] bytes = UTF8Encoding.Default.GetBytes(content);
using (MemoryStream stream = new MemoryStream(bytes))
{
XmlSerializer formatter = new XmlSerializer(type);
stream.Seek(0, SeekOrigin.Begin);
object obj = formatter.Deserialize(stream);
stream.Close();
return(obj);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(null);
}
}
/// <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)
{
string fromDataTime = fromDate.ToString("MM-dd-yyyy HH:mm:ss");
string oldTime = GetDataTime().Trim();
if (!string.IsNullOrEmpty(oldTime))
{
fromDataTime = oldTime + ";" + fromDataTime; //追加最后时间到左边
}
fromDataTime = EncodeHelper.DesEncrypt(fromDataTime, UIConstants.IsolatedStorageEncryptKey); //加密
#region 将fromDataTime保存在"独立存贮空间"
string username = fromDataTime;
//按用户、域、程序集获取独立存储区
IsolatedStorageFile isoStore =
IsolatedStorageFile.GetStore(
IsolatedStorageScope.User | IsolatedStorageScope.Domain | IsolatedStorageScope.Assembly, null, null);
string[] 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 (StreamWriter 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 (StreamWriter writer = new StreamWriter(isoStream1))
{
writer.WriteLine(fromDataTime);
}
}
}
else
{
using (isoStream1 = new IsolatedStorageFileStream(UIConstants.IsolatedStorage, FileMode.Open, isoStore))
{
//写入文件
using (StreamWriter writer = new StreamWriter(isoStream1))
{
writer.WriteLine(fromDataTime);
}
}
}
}
#endregion
}
