How to set a Check Box in the DateTimePicker in C#? - GeeksforGeeks

02 Aug, 2019
In Windows Form, the DateTimePicker control is used to select and display date/time with a specific format in your form. In DateTimePicker control, you are allowed to set a checkbox in the DateTimePicker using the ShowCheckBox Property.If the value of this property is set to true, then a checkbox display in the DateTimePicker control, otherwise, false. When the checkbox is selected which means the date/time is updated and if the checkbox is unchecked, then you cannot update date/time. You can set this property in two different ways:
1. Design-Time: It is the easiest way to set a checkbox 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 a checkbox in the DateTimePicker as shown in the below image:Output:
Output:
Run-Time: It is a little bit trickier than the above method. In this method, you can set a checkbox in the DateTimePicker control programmatically with the help of given syntax:
public bool ShowCheckBox { get; set; }
The value of this property is of System.Boolean type, either true or false. The default value of this property is false. The following steps show how to set a checkbox 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();

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

Step 2: After creating DateTimePicker, set the ShowCheckBox property of the DateTimePicker provided by the DateTimePicker class.// Setting the ShowCheckBox property
dt.ShowCheckBox = true;

// Setting the ShowCheckBox property
dt.ShowCheckBox = true;

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);

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

Example:
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 WindowsFormsApp49 {  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 of Birth";        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.Short;        dt.Name = "MyPicker";        dt.Font = new Font("Comic Sans MS", 12);        dt.ShowCheckBox = true;          // Adding this control to the form        this.Controls.Add(dt);    }}}
Output:
CSharp-Windows-Forms-Namespace
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