In this blog we will know how to calculate total days between two dates.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Total_days_from_two_dates_csharp
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void btn_total_Click(object sender, EventArgs e)
{
int Totaldays = duration(textBox1.Text, textBox2.Text);
label1.Text = Convert.ToString(Totaldays);
}

public int duration(string startdate, string enddate)
{

DateTime dt1 = DateTime.Parse(Convert.ToDateTime(textBox1.Text).ToString("dd/MM/yyyy"));
DateTime dt2 = DateTime.Parse(Convert.ToDateTime(textBox2.Text).ToString("dd/MM/yyyy"));
TimeSpan ts = dt2.Subtract(dt1);
int days = ts.Days;
return days;
}
}
}