Current day + Expiry Day in asp.net insert to Datatable

Question

Hello C# Corner ,

I created a method to count days before expires

private string checkDate(int days)

{

string response = null;

if (days == 30)

{

response = "30 Days-SE";

}

else if (days == 90)

{

response = "90 Days-SE";

}

else if (days == 365)

{

response = "365 days-SE";

}

else if (days ==31)

{

response = "30 Days-PE";

}

else if (days==91)

{

response = "90 Days-PE";

}

else if (days==366)

{

response = "365 Days-PE";

}

return response;

}

 

Question one = I want to get future expiry dates after you add ( Date time.now + expiry date)

 

Please, Can someone help me how to do this. Thanks