Blazor 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.
The ButtonGroup component is part of Telerik UI for Blazor, a
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In this article:
Basic and Toggle Buttons
To add a Telerik ButtonGroup to your Blazor app:
- Add the
TelerikButtonGrouptag. - Inside it, add
ButtonGroupToggleButtonorButtonGroupButtontags that denote each button.- The
ButtonGroupToggleButtonbecomes primary when clicked and de-selects when another one is clicked. Read more in the Selection article. - The
ButtonGroupButtondoes not change its visual state when clicked.
- The
- Use the
OnClickevent of these buttons to handle the user actions. Read more in the Events article.
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
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
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
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
