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NumericTextBox in Razor Pages

Updated on Dec 10, 2025

This article describes how to seamlessly integrate and configure the Telerik UI NumericTextBox for ASP.NET Core in Razor Pages applications.

Referencing Handler Methods in Razor Pages

Razor Pages is an alternative to the MVC pattern that makes page-focused coding easier and more productive. This approach consists of a cshtml file and a cshtml.cs file (by convention, the two files have the same name).

The cshtml.cs file, known as the PageModel, contains handler methods that respond to HTTP requests. These methods are prefixed with On followed by the HTTP verb (for example, OnGet, OnPost, OnPostRead, OnPostCreate).

Handler methods declared in a PageModel can be referenced from any Razor Page using one of the following URL patterns:

Using Url.Page()
C#
```
Url.Page("PageName", "HandlerName")
// OR
Url.Page("/FolderName/PageName", "HandlerName")
```
For example, Url.Page("Index", "Read") references the OnPostRead or OnGetRead handler method in the Index.cshtml.cs file.
Using a query string
C#
```
Url("/PathToPage?handler=HandlerName")
```
For example, Url("/Index?handler=Read") references the OnPostRead or OnGetRead handler method in the Index page.

For more information on Razor Pages architecture and concepts, refer to the official Microsoft documentation.

Binding to a PageModel Property

To bind the NumericTextBox to a property from the PageModel, follow the next steps:

Declare the PageModel at the top of the RazorPage:

Razor

    @page
    @model NumericTextBoxBindingModel

Declare the component either in a form or as a stand-alone component:

Razor
    <form method="post">
        <label for="Price">Price:</label>
        @(Html.Kendo().NumericTextBoxFor(c=>c.Price)
            .Step(1)
            .Min(0)
            .Decimals(0)
        )
        <br />
        <input type="submit" name="name" value="Submit Form" />
    </form>
Razor
    <form method="post">
        <label for="Price">Price:</label>
        <kendo-numerictextbox for="Price" step="1" min="0" decimals="0">
        </kendo-numerictextbox>
        <br />
        <input type="submit" name="name" value="Submit Form" />
    </form>

Bind the property values in the backend:

    public class NumericTextBoxBindingModel : PageModel
    {
        [BindProperty]
        public int Price { get; set; }

        public void OnGet()
        {
            Price = 20; // Assign value to the "Price" property, if needed.
        }
        public void OnPost()
        {
            //omitted for clarity
        }
    }

For the complete project, refer to the NumericTextBox in Razor Pages example.

NumericTextBox in Razor Pages

Referencing Handler Methods in Razor Pages

Binding to a PageModel Property

See Also