ButtonGroup Overview

This article provides information about the Blazor ButtonGroup component and its core features.

The ButtonGroup component is a container for buttons that can be toggle buttons, and lets you select one or more, and respond to the selection and click events. The buttons inside fill up the container, match the styling according to the chosen theme and provide the regular button features like images and icons and the other parameters and attributes.

In this article:

Basic and Toggle Buttons

To add a Telerik ButtonGroup to your Blazor app:

  1. Add the TelerikButtonGroup tag.
  2. Inside it, add ButtonGroupToggleButton or ButtonGroupButton tags that denote each button.
    • The ButtonGroupToggleButton becomes primary when clicked and de-selects when another one is clicked. Read more in the Selection article.
    • The ButtonGroupButton does not change its visual state when clicked.
  3. Use the OnClick event of these buttons to handle the user actions.

TelerikButtonGroup with regular buttons and toggle buttons, and their respective OnClick handlers

@* Each individual button lets you control its selected state, have a click handler and template, icons, text *@

<TelerikButtonGroup>
    <ButtonGroupButton OnClick="@FirstClick">First button</ButtonGroupButton>
    <ButtonGroupToggleButton OnClick="@SecondClick">Second button</ButtonGroupToggleButton>
</TelerikButtonGroup>

@code{
    async Task FirstClick()
    {
        Console.WriteLine("the first button was clicked.");
    }

    async Task SecondClick()
    {
        Console.WriteLine("the second button was clicked. It becomes selected when clicked.");
    }
}

The result from the code snippet above, after clicking the second button

Basic ButtonGroup

Disabled State

To disable a button, set its Enabled attribute to false.

Disabled buttons in a button group

<TelerikButtonGroup>
    <ButtonGroupButton>Enabled</ButtonGroupButton>
    <ButtonGroupButton Enabled="false">Disabled</ButtonGroupButton>
    <ButtonGroupToggleButton Selected="true">Enabled</ButtonGroupToggleButton>
    <ButtonGroupToggleButton Enabled="false">Disabled</ButtonGroupToggleButton>
</TelerikButtonGroup>

Comparison between disabled and enabled button

Disabled buttons in button group

Hide Buttons

You can set the Visible parameter of individual buttons to false to hide them based on certain logic. This lets you maintain the same markup and toggle features on and off with simple flags without affecting indexes and event handlers.

Hide buttons from a ButtonGroup

<TelerikButtonGroup>
    <ButtonGroupButton>First</ButtonGroupButton>
    <ButtonGroupButton Visible="false">Hidden</ButtonGroupButton>
    <ButtonGroupButton>Third</ButtonGroupButton>
</TelerikButtonGroup>

Only two visible buttons are rendered

Hide buttongroup buttons conditionally

Styling

You can style the individual buttons through their Class attribute to define your own CSS rules that apply to the HTML rendering. You may want to make them conditional based on their Selected state.

Set CSS class to the button and change its appearance

<TelerikButtonGroup>
    <ButtonGroupToggleButton>Default</ButtonGroupToggleButton>
    <ButtonGroupToggleButton @bind-Selected="@IsSelected"
                             Class="@( IsSelected ? "my-on-class" : "the-off-class" )">Styled - Selected: @IsSelected</ButtonGroupToggleButton>
</TelerikButtonGroup>

@code {
    bool IsSelected { get; set; }
}

<style>
    .k-button-group button.k-button.my-on-class,
    .k-button-group button.k-button.my-on-class:hover {
        color: yellow;
        font-weight: 700;
    }

    .k-button-group button.k-button.the-off-class,
    .k-button-group button.k-button.the-off-class:hover {
        color: pink;
    }
</style>

The result from the code snippet above

conditional styling of buttongroup

See Also

In this article
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