我正在使用C＃。我收到一个错误：
名称'DateAndTime'，'DateInterval''FirstDayOfWeek'，'FirstWeekOfYear'，在当前上下文中不存在
我不明白。我尝试了很多解决方案，但它没有用。
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Win32;
using System.IO;
using Microsoft.VisualBasic;
using System.Windows.Forms;
namespace SoftwareLocker
{
// Activate Property
public class TrialMaker
{
#region -> Private Variables
private string _BaseString;
private string _Password;
private string _SoftName;
private string _RegFilePath;
private string _HideFilePath;
private int _DefDays;
private int _Runed;
private string _Text;
private string _Identifier;
#endregion
#region -> Constructor
/// <summary>
/// Make new TrialMaker class to make software trial
/// </summary>
/// <param name="SoftwareName">Name of software to make trial</param>
/// <param name="RegFilePath">File path to save password(enrypted)</param>
/// <param name="HideFilePath">file path for saving hidden information</param>
/// <param name="Text">A text for contacting to you</param>
/// <param name="TrialDays">Default period days</param>
/// <param name="TrialRunTimes">How many times user can run as trial</param>
/// <param name="Identifier">3 Digit string as your identifier to make password</param>
public TrialMaker(string SoftwareName,
string RegFilePath, string HideFilePath,
string Text, int TrialDays, int TrialRunTimes,
string Identifier)
{
_SoftName = SoftwareName;
_Identifier = Identifier;
SetDefaults();
_DefDays = TrialDays;
_Runed = TrialRunTimes;
_RegFilePath = RegFilePath;
_HideFilePath = HideFilePath;
_Text = Text;
}
private void SetDefaults()
{
SystemInfo.UseBaseBoardManufacturer = false;
SystemInfo.UseBaseBoardProduct = true;
SystemInfo.UseBiosManufacturer = false;
SystemInfo.UseBiosVersion = true;
SystemInfo.UseDiskDriveSignature = true;
SystemInfo.UsePhysicalMediaSerialNumber = false;
SystemInfo.UseProcessorID = true;
SystemInfo.UseVideoControllerCaption = false;
SystemInfo.UseWindowsSerialNumber = false;
MakeBaseString();
MakePassword();
}
#endregion
// Make base string (Computer ID)
private void MakeBaseString()
{
_BaseString = Encryption.Boring(Encryption.InverseByBase(SystemInfo.GetSystemInfo(_SoftName), 10));
}
private void MakePassword()
{
_Password = Encryption.MakePassword(_BaseString, _Identifier);
}
/// <summary>
/// Show registering dialog to user
/// </summary>
/// <returns>Type of running</returns>
public RunTypes ShowDialog()
{
// check if registered before
if (CheckRegister() == true)
return RunTypes.Full;
frmDialog PassDialog = new frmDialog(_BaseString, _Password, DaysToEnd(), _Runed, _Text);
MakeHideFile();
DialogResult DR = PassDialog.ShowDialog();
if (DR == System.Windows.Forms.DialogResult.OK)
{
MakeRegFile();
return RunTypes.Full;
}
else if (DR == DialogResult.Retry)
return RunTypes.Trial;
else
return RunTypes.Expired;
}
// save password to Registration file for next time usage
private void MakeRegFile()
{
FileReadWrite.WriteFile(_RegFilePath, _Password);
}
// Control Registeration file for password
// if password saved correctly return true else false
private bool CheckRegister()
{
string Password = FileReadWrite.ReadFile(_RegFilePath);
if (_Password == Password)
return true;
else
return false;
}
// from hidden file
// indicate how many days can user use program
// if the file does not exists, make it
private int DaysToEnd()
{
FileInfo hf = new FileInfo(_HideFilePath);
if (hf.Exists == false)
{
MakeHideFile();
return _DefDays;
}
return CheckHideFile();
}
// store hidden information to hidden file
// Date,DaysToEnd,HowManyTimesRuned,BaseString(ComputerID)
private void MakeHideFile()
{
string HideInfo;
HideInfo = DateTime.Now.Ticks + ";";
HideInfo += _DefDays + ";" + _Runed + ";" + _BaseString;
FileReadWrite.WriteFile(_HideFilePath, HideInfo);
}
// Get Data from hidden file if exists
private int CheckHideFile()
{
string[] HideInfo;
HideInfo = FileReadWrite.ReadFile(_HideFilePath).Split(';');
long DiffDays;
int DaysToEnd;
if (_BaseString == HideInfo[3])
{
DaysToEnd = Convert.ToInt32(HideInfo[1]);
if (DaysToEnd <= 0)
{
_Runed = 0;
_DefDays = 0;
return 0;
}
DateTime dt = new DateTime(Convert.ToInt64(HideInfo[0]));
DiffDays = DateAndTime.DateDiff(DateInterval.Day,
dt.Date, DateTime.Now.Date,
FirstDayOfWeek.Saturday,
FirstWeekOfYear.FirstFullWeek);
DaysToEnd = Convert.ToInt32(HideInfo[1]);
_Runed = Convert.ToInt32(HideInfo[2]);
_Runed -= 1;
DiffDays = Math.Abs(DiffDays);
_DefDays = DaysToEnd - Convert.ToInt32(DiffDays);
}
return _DefDays;
}
public enum RunTypes
{
Trial = 0,
Full,
Expired,
UnKnown
}
#region -> Properties
/// <summary>
/// Indicate File path for storing password
/// </summary>
public string RegFilePath
{
get
{
return _RegFilePath;
}
set
{
_RegFilePath = value;
}
}
/// <summary>
/// Indicate file path for storing hidden information
/// </summary>
public string HideFilePath
{
get
{
return _HideFilePath;
}
set
{
_HideFilePath = value;
}
}
/// <summary>
/// Get default number of days for trial period
/// </summary>
public int TrialPeriodDays
{
get
{
return _DefDays;
}
}
/// <summary>
/// Get or Set TripleDES key for encrypting files to save
/// </summary>
public byte[] TripleDESKey
{
get
{
return FileReadWrite.key;
}
set
{
FileReadWrite.key = value;
}
}
#endregion
#region -> Usage Properties
public bool UseProcessorID
{
get
{
return SystemInfo.UseProcessorID;
}
set
{
SystemInfo.UseProcessorID = value;
}
}
public bool UseBaseBoardProduct
{
get
{
return SystemInfo.UseBaseBoardProduct;
}
set
{
SystemInfo.UseBaseBoardProduct = value;
}
}
public bool UseBaseBoardManufacturer
{
get
{
return SystemInfo.UseBiosManufacturer;
}
set
{
SystemInfo.UseBiosManufacturer = value;
}
}
public bool UseDiskDriveSignature
{
get
{
return SystemInfo.UseDiskDriveSignature;
}
set
{
SystemInfo.UseDiskDriveSignature = value;
}
}
public bool UseVideoControllerCaption
{
get
{
return SystemInfo.UseVideoControllerCaption;
}
set
{
SystemInfo.UseVideoControllerCaption = value;
}
}
public bool UsePhysicalMediaSerialNumber
{
get
{
return SystemInfo.UsePhysicalMediaSerialNumber;
}
set
{
SystemInfo.UsePhysicalMediaSerialNumber = value;
}
}
public bool UseBiosVersion
{
get
{
return SystemInfo.UseBiosVersion;
}
set
{
SystemInfo.UseBiosVersion = value;
}
}
public bool UseBiosManufacturer
{
get
{
return SystemInfo.UseBiosManufacturer;
}
set
{
SystemInfo.UseBiosManufacturer = value;
}
}
public bool UseWindowsSerialNumber
{
get
{
return SystemInfo.UseWindowsSerialNumber;
}
set
{
SystemInfo.UseWindowsSerialNumber = value;
}
}
#endregion
}
}
答案 0 :(得分：0)
该问题将适用于Viaual basic 2005，如果我们在2015年这样做，一些图书馆缺少pblm引发