In this article I will explain with an example, how to implement Bootstrap DatePicker (Calendar) in ASP.Net Core.
This article will also illustrate how to get the selected Date of the Bootstrap DatePicker (Calendar) inside Controller on Button click in ASP.Net Core.
The Date format for the selected Date will be set to dd/MM/yyyy format.
Controller
The Controller consists of following Action methods.
Action method for handling GET operation
Inside this Action method, simply the View is returned.
Action method for handling POST operation
This Action method gets called, when the Button is clicked.
Inside this Action Method, the value of the selected Date is fetched and set into a
ViewBag object.
Finally, the View is returned.
public class HomeController : Controller
{
public IActionResult Index()
{
return View();
}
[HttpPost]
public IActionResult Index(string selectedDate)
{
DateTime dt = Convert.ToDateTime(selectedDate);
ViewBag.Message = "Selected Date: " + dt.ToShortDateString();
return View();
}
}
View
HTML Markup
Inside the View, first the ASP.Net TagHelpers is inherited.
Inside the View, the following CSS file is inherited.
1. bootstrap.min.css
2. bootstrap-datepicker.css
And then, the following JS script files are inherited.
1. jquery.min.js
2. bootstrap.min.js
3. bootstrap-datepicker.js
The View consists of an HTML Form which has been created using the ASP.Net TagHelpers with the following attributes.
asp-action – Name of the Action. In this case the name is Index.
asp-controller – Name of the Controller. In this case the name is Home.
method – It specifies the Form Method i.e. GET or POST. In this case it will be set to POST.
Inside the Form, there is a TextBox and a Submit Button.
Inside the
jQuery document ready event handler, the TextBox has been applied with the
Bootstrap DatePicker plugin.
The Bootstrap DatePicker plugin has been assigned with the following properties:
changeMonth – true
The calendar will allow us to change the Month.
changeYear – true
The calendar will allow us to change the Year.
format – dd/mm/yyyy
The Bootstrap DatePicker will set the selected Date in dd/mm/yyyy date format in TextBox.
Submitting the Form
When the Date is selected and the
Submit button is clicked, the Form is submitted and the
ViewBag object is checked for NULL and if it is not NULL then, the value of the
ViewBag object is displayed using
JavaScript Alert Message Box.
@addTagHelper*, Microsoft.AspNetCore.Mvc.TagHelpers
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
</head>
<body>
<!-- Bootstrap -->
<script type="text/javascript" src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js'></script>
<script type="text/javascript" src='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.3/js/bootstrap.min.js'></script>
<link rel="stylesheet" href='https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.3/css/bootstrap.min.css'
media="screen"/>
<!-- Bootstrap -->
<!-- Bootstrap DatePicker -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.6.4/css/bootstrap-datepicker.css" type="text/css"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-datepicker/1.6.4/js/bootstrap-datepicker.js" type="text/javascript"></script>
<!-- Bootstrap DatePicker -->
<form asp-controller="Home" asp-action="Index" method="post">
<input type="text" id="txtSelectedDate" name="SelectedDate" />
<input type="submit" value="Submit"/>
<script type="text/javascript">
$(function () {
$('#txtSelectedDate').datepicker({
changeMonth: true,
changeYear: true,
format: "dd/mm/yyyy",
});
});
</script>
@if (ViewBag.Message != null)
{
<script type="text/javascript">
$(function () {
alert("@ViewBag.Message");
});
</script>
}
</form>
</body>
</html>
Screenshot
![ASP.Net Core: Bootstrap DatePicker (Calendar) implementation]()
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