Date and Time Calculation Methods In C#

Date and Time Calculation Methods In C#

Date and Time Calculation Methods in C#

Now, you are going to learn how to calculate the date and time of the present date using C#.net. This tutorial will help you calculate the months, days, hour, minutes and seconds of a present date in an instant. As a result, the numbers of the precise time will be displayed accurately in each field.

CalculationMethodDateFig.3

So, let’s begin:

CalculationMethodDateFig.1

  • Go to the solution explorer, click the “view code” to fire the code editor.

CalculationMethodDateFig.2

  • Create a method to calculate today’s date to future date.
private void Calculate(){ 
 //'INITIALIZE THE INSTANCE METHODS OF THE DATETTIME TYPE.
 //'DEMONSTRATING THE DateTime.AddMonth, DateTime.AddDays , DateTime.AddHours
 //' , DateTime.AddMinutes , DateTime.AddSeconds AND DateTime.AddMilliseconds
 
 //declare the date today
 DateTime dateNow = DateTime.Now;
 //declare the string variable
 string ansMon,ansDay,ansHr,ansMin,ansSec;
 //set the date today into the textbox
 txtDateAndTimeToday .Text = dateNow.ToString();

 //passing the added months,days,hours,minutes and seconds to the string variable.
 ansMon = dateNow.AddMonths(Int32.Parse(txtAddMonths.Text)).ToString();
 ansDay = dateNow.AddDays(Convert.ToDouble(txtAddDays.Text)).ToString();
 ansHr = dateNow.AddHours(Convert.ToDouble(txtAddHours.Text)).ToString();
 ansMin = dateNow.AddMinutes(Convert.ToDouble(txtAddMinutes.Text)).ToString();
 ansSec = dateNow.AddSeconds(Convert.ToDouble(txtAddSeconds.Text)).ToString();

 //set up the added months,days,hours,minutes and seconds to display in the textboxes 
 txtAnsMonths.Text = ansMon;
 txtAnsDays.Text = ansDay;
 txtAnsHours.Text = ansHr;
 txtAnsMinutes.Text = ansMin;
 TxtAnsSeconds.Text = ansSec;
 
 }
  • Go back to the design view, double-click the form and call a method to calculate today’s date to future date in the first load of the form.
 private void Form1_Load(object sender, EventArgs e)
 {
 //'SET THE METHOD TO CALCULATE IN THE FIRST LOAD
 Calculate(); 
 }
  • Go back to the design view again, double-click the “calculate” button to fire the <code> click</code>  event handler of a button and do the following code in the method.
private void button1_Click(object sender, EventArgs e)
 {
 //'SET THE METHOD TO CALCULATE WHEN BUTTON IS CLICKED
 Calculate();
 }

 

Output:

CalculationMethodDateFig.3

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ABOUT PROJECTPROJECT DETAILS
Project Name :Date and Time Calculation Methods
Project Platform :C#
Programming Language Used:C# Programming Language
Developer Name :itsourcecode.com
IDE Tool (Recommended):Visual Studio 2019
Project Type :Desktop Application
Database:None
Upload Date and Time:July 26, 2016 – 5:55 am

Date and Time Calculation Methods

Frequently Asked Questions

How does this C# project work?

Built with C# WinForms (.NET Framework or .NET 6/7/8) and SQL Server backend. Standard structure: Form designer → code-behind event handlers → ADO.NET data access layer → SQL Server. Login form for auth. Ready to extend for BSIT capstone scope.

What .NET and SQL Server versions does this project require?

Most projects in this batch use C# WinForms on .NET Framework 4.5+ (the dominant stack for tutorial sites) with SQL Server 2012 Express or higher. A few newer projects use .NET 6/7/8. To run: install Visual Studio 2019 / 2022 (Community edition is free), install SQL Server Express + SSMS, open the .sln file, build, run.

How do I set up the database for this C# project?

Open SQL Server Management Studio (SSMS) and connect to your SQL Server instance (e.g. localhost\SQLEXPRESS). Right-click Databases > Restore Database OR > New Database then import the included .sql script. Update the connection string in App.config (or in code-behind) with your server name + credentials. Rebuild and run.

Can I use this C# project for a BSIT capstone or thesis?

Yes, but extend it. A bare CRUD form is too narrow for full capstone scope. Add: role-based access (admin/staff/customer login redirect), Crystal Reports or RDLC reports, dashboard with Chart controls, audit log, multi-branch support. Pair with Chapter 1-5 documentation matching your panel’s rubric.

Why am I getting ‘connection error’ or ‘object reference not set’?

Three common C# issues: (1) Connection error: SQL Server isn’t running OR connection string in App.config has wrong server name. Open SQL Server Configuration Manager + verify SQL Server (SQLEXPRESS) service is running. (2) NullReferenceException: a control reference or DB column returned NULL, add a check or use ?? operator. (3) Build error ‘The type or namespace could not be found’: missing assembly reference, add via Project > Add Reference.

Where can I find more C# projects with source code?

Browse the C# Projects hub for the full library. For other .NET stacks see VB.NET Projects (300+ Windows Forms systems). For ASP.NET WebForms see ASP.NET Projects. For BSIT capstone idea lists see 150 Best Capstone Project Ideas.

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