PromptBox Appearance

Updated on Feb 11, 2026

The PromptBox provides predefined appearance options such as different sizes, border radiuses, fill modes and theme colors for its built-in button controls.

Size

The PromptBox allows you to configure the size of its buttons. To achieve this utilize the Size option for each button configuration.

The supported values are:

• Small
• Medium (default)
• Large
• None

Razor

    @(Html.Kendo().PromptBox()
        .Name("promptBox")
        .ActionButton(button => button
            .Size(ComponentSize.Large)
        )
    )

Roundness

The PromptBox enables you to apply different border radius to its buttons through the Rounded option.

The supported values are:

• Small
• Medium (default)
• Large
• Full
• None

Razor

    @(Html.Kendo().PromptBox()
        .Name("promptBox")
        .ActionButton(button => button
            .Rounded(Rounded.Full)
        )
    )

Fill Mode

The PromptBox allows you to set different fill modes for its buttons by using the FillMode option.

The supported values are:

• Solid (default)
• Flat
• Outline
• Link
• Clear
• None

Razor

    @(Html.Kendo().PromptBox()
        .Name("promptBox")
        .ActionButton(button => button
            .FillMode(FillMode.Flat)
        )
    )

Theme Colors

The PromptBox allows you to set different theme colors for its buttons by using the ThemeColor option.

The supported values include:

• Base (default)
• Primary
• Secondary
• Tertiary
• Info
• Success
• Warning
• Error
• Dark
• Light
• Inverse
• None

Razor

    @(Html.Kendo().PromptBox()
        .Name("promptBox")
        .ActionButton(button => button
            .ThemeColor(ThemeColor.Primary)
        )
    )

See Also

• Server-Side API of the PromptBox HtmlHelper

• JavaScript API Reference of the PromptBox

• PromptBox Adornments

• [PromptBox Modes](slug://htmlhelpers_promptbox_modes_aspnetcore