How do I add date value with a natural number like '180' in C# winform ?

Question

1.00/5 (1 vote)

See more:

I m creating a program in c# winform which will tell the exact date from the entered days. Here I have taken 2 DateTimePicker and 1 Textbox.

For Example :

DateTimePicker1.Text = textbox1.Text + DateTimePicker2.Text; // It will show the exact date from the days entered.

I want to produce this output in the Textbox :

01-11-2022 + 180 days = 30-04-2023

Plz let me know. If anyone you have the code or an algorithm let me know, as I m new to c#.

What I have tried:

I have not tried any code yet.

Posted 2-Nov-22 17:47pm

Nikhil Yogi

Updated 2-Nov-22 19:01pm

Add a Solution

Comments

[no name] 3-Nov-22 0:44am

https://learn.microsoft.com/en-us/dotnet/api/system.datetime.adddays?view=net-7.0

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2022-11-02T19:01:00

First off, stop using the Text property of things, and use more "natural" vlaues.

The DateTimePicker has a Value propertyValue Property[^] which returns the selected date as a DateTime object. Use that and you can do maths with it. If you have two textboxes txtDaysForward and txtResult, then you need to convert the former to an integer value and then add that to the DateTimePicker.Value.

You start by converting a user entered string to an integer.

C#

if (!int.TryParse(txtDaysForward.Text, out int daysForward))
   {
   ... report a problem to the user - that's not a number ...
   return;
   }

Then you can set your result:

C#

DateTime start = MyDateTimePicker.Value;
txtResult.Text = $"{start} + {daysForward} = {start.AddDays(daysForward)}";

Or set your second DateTimePicker to the resulting date:

C#

DateTime start = MyDateTimePicker.Value;
ResultDateTimePicker.Value = start.AddDays(daysForward);

Give it a try - you'll see what I mean.

memoarfaa · Answer 2 · 2022-11-02T19:01:00

Solution 1

var dt1 = dateTimePicker2.Value;
var dt2 = dt1.AddDays(int.Parse(textBox1.Text));
dateTimePicker1.Value = dt2;

Posted 2-Nov-22 19:01pm

memoarfaa