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Appearance

Updated on Feb 4, 2026

In this article, you will find information about the styling options and rendering of the Telerik UI for ASP.NET MVC TextBox.

For a live example, refer to the Appearance Demo of the TextBox.

Options

The TextBox HtmlHelper provides the following styling options:

  • Size()—configures the overall size of the component.
  • FillMode()—defines how the color is applied to the component.
  • Rounded()—specifies the border radius of the component.

Size

The Size() method controls the size of the rendered TextBox.

The example below demonstrates how to adjust the Size of the component:

Razor
@(Html.Kendo().TextBox()
    .Name("textbox")
    .Size(ComponentSize.Medium)
)

The following values are available for the Size option:

  • Small
  • Medium
  • Large

When not explicitly set, the applied theme controls the default size.

The None value is deprecated. Use custom CSS instead.

Rounded

The border radius of the TextBox can be customized through the Rounded() method.

Razor
@(Html.Kendo().TextBox()
    .Name("textbox")
    .Rounded(Rounded.Medium)
)

The following values are available for the Rounded option:

  • Small
  • Medium
  • Large
  • Full

When not explicitly set, the applied theme controls the default border radius.

The None value is deprecated. Use custom CSS instead.

FillMode

The FillMode() method controls the way the color is applied to the TextBox component.

Razor
@(Html.Kendo().TextBox()
    .Name("textbox")
    .FillMode(FillMode.Solid)
)

The following values are available for the FillMode option:

  • Solid
  • Flat
  • Outline

When not explicitly set, the applied theme controls the default fill mode.

The None value is deprecated. Use custom CSS instead.

Rendering

Starting with version R1 2022, the component has a new rendering. For additional information on the decision behind these changes, visit the Components Rendering Overview article.

To review the latest rendering of the component, refer to the HTML specifications in the Kendo UI Themes Monorepo. The tests folder of the repository contains the rendering for all flavors of the components, providing a clear reference for how their elements are structured. The rendering information can help you customize a component's appearance and behavior by applying custom CSS or JavaScript to suit specific design or functional requirements.

See Also