expiry date

Dear Kanusal,

this type of problem already solved in c# corner.you will check properly.
use this code

using System;

using System.IO;

using Microsoft.Win32; // needed for registry access

static class Program

{

static void Main(string[] args)

{

int period = 30; // trial period

string keyName = "Software\\Rano\\SomeApp";

long ticks = DateTime.Today.Ticks;

RegistryKey rootKey = Registry.CurrentUser;

RegistryKey regKey = rootKey.OpenSubKey(keyName);

if (regKey == null) // first time app has been used

{

regKey = rootKey.CreateSubKey(keyName);

long expiry = DateTime.Today.AddDays(period).Ticks;

regKey.SetValue("expiry", expiry, RegistryValueKind.QWord);

regKey.Close();

}

else

{

long expiry = (long)regKey.GetValue("expiry");

regKey.Close();

long today = DateTime.Today.Ticks;

if (today > expiry)

{

Console.WriteLine("Your free trial has expired. Please register to continue using the application");

return;

}

// code for rest of application

Console.WriteLine("Rest of application continuing ...");

Console.ReadKey();

}

3 Replies

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Deepak Saini11y ago
Dear KAUSAL,

i dont have any sample of this type of Example .you check this Example on c# corner
0
KAUSAL MP11y ago
Sir,

Please send a sample windows application
0
Deepak Saini11y ago
Dear Kanusal,

this type of problem already solved in c# corner.you will check properly.
use this code

using System;
using System.IO;
using Microsoft.Win32; // needed for registry access

static class Program
{
static void Main(string[] args)
{
int period = 30; // trial period
string keyName = "Software\\Rano\\SomeApp";
long ticks = DateTime.Today.Ticks;

RegistryKey rootKey = Registry.CurrentUser;
RegistryKey regKey = rootKey.OpenSubKey(keyName);
if (regKey == null) // first time app has been used
{
regKey = rootKey.CreateSubKey(keyName);
long expiry = DateTime.Today.AddDays(period).Ticks;
regKey.SetValue("expiry", expiry, RegistryValueKind.QWord);
regKey.Close();
}
else
{
long expiry = (long)regKey.GetValue("expiry");
regKey.Close();
long today = DateTime.Today.Ticks;
if (today > expiry)
{
Console.WriteLine("Your free trial has expired. Please register to continue using the application");
return;
}
}

// code for rest of application
Console.WriteLine("Rest of application continuing ...");
Console.ReadKey();
}
}
0