How to set Maximum Date in the DateTimePicker in C#?

In Windows Forms, the DateTimePicker control is used to select and display date/time with a specific format in your form. In DateTimePicker control, you can set the maximum date and time that can be selected in the DateTimePicker using the MaxDate Property. The default value of this property is December 31st, 9998 12 am. You can set this property in two different ways: 1. Design-Time: It is the easiest way to set the maximum date and time in the DateTimePicker as shown in the following steps:

• Step 1: Create a windows form as shown in the below image: Visual Studio -> File -> New -> Project -> WindowsFormApp
• Step 2: Next, drag and drop the DateTimePicker control from the toolbox to the form as shown in the below image:
• Step 3: After drag and drop you will go to the properties of the DateTimePicker and set the maximum date and time in the DateTimePicker as shown in the below image: Output:

2. Run-Time: It is a little bit trickier than the above method. In this method, you can set the maximum date and time in the DateTimePicker control programmatically with the help of given syntax:

public DateTime MaxDate { get; set; }

It will throw an ArgumentException if the value of this property is not less than the MaxDate value and also throw a SystemException if the value of this property is less than the MinDateTime value. The following steps show how to set the maximum date and time in the DateTimePicker dynamically:

• Step 1: Create a DateTimePicker using the DateTimePicker() constructor is provided by the DateTimePicker class.

  // Creating a DateTimePicker
  DateTimePicker dt = new DateTimePicker();
  

• Step 2: After creating DateTimePicker, set the MaxDate property of the DateTimePicker provided by the DateTimePicker class.

  // Setting the maximum date and time 
  dt.MaxDate = new DateTime(2500, 12, 20);
  

• Step 3: And last add this DateTimePicker control to the form using the following statement:

  // Adding this control to the form
  this.Controls.Add(dt);
  

Example: CSharp

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

namespace WindowsFormsApp48 {

public partial class Form1 : Form {

    public Form1()
    {
        InitializeComponent();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        // Creating and setting the
        // properties of the Label
        Label lab = new Label();
        lab.Location = new Point(183, 162);
        lab.Size = new Size(172, 20);
        lab.Text = "Select Date and Time";
        lab.Font = new Font("Comic Sans MS", 12);

        // Adding this control
        // to the form
        this.Controls.Add(lab);

        // Creating and setting the
        // properties of the DateTimePicker
        DateTimePicker dt = new DateTimePicker();
        dt.Location = new Point(360, 162);
        dt.Size = new Size(292, 26);
        dt.MaxDate = new DateTime(2500, 12, 20);
        dt.MinDate = new DateTime(1753, 1, 1);
        dt.Format = DateTimePickerFormat.Long;
        dt.Name = "MyPicker";
        dt.Font = new Font("Comic Sans MS", 12);
        dt.Visible = true;
        dt.Value = DateTime.Today;

        // Adding this control 
        // to the form
        this.Controls.Add(dt);
    }
}
}

Output: