Button Overview

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

The Button component provides styling according to the chosen theme, click event and icons. You can also disable the button through a property.

Basic Button

To add a Telerik Button to your Blazor app, use the <TelerikButton> tag:

Basic Telerik Button tag

@using Telerik.Blazor.Components.Button

<TelerikButton>Hello!</TelerikButton>

The result from the code snippet above

Component namespace and reference

@using Telerik.Blazor.Components.Button

<TelerikButton @ref="theButton">Hello!</TelerikButton>

@code{
    Telerik.Blazor.Components.Button.TelerikButton theButton;
}

Click Handler

To attach a click handler, use the OnClick attribute and define the method in the functions section.

Click handler for a Telerik Button

@using Telerik.Blazor.Components.Button

<TelerikButton OnClick="@myHandler">Click me!</TelerikButton>

@someVariable

@code {
    MarkupString someVariable;

    void myHandler()
    {
        someVariable = new MarkupString(DateTime.Now.ToString());
    }
}

Styling

You can style the button through its Class attribute to define your own CSS rules that apply to the HTML rendering.

Set CSS class to the button and change its appearance

@using Telerik.Blazor.Components.Button

<TelerikButton Class="RedText">My text is red.</TelerikButton>

<style>
    .RedText,
    .RedText:hover {
        color: red;
    }
</style>

The result from the code snippet above

You can also make the button use a strong color to attact attention, called Primary button styling. To do that, set its Primary property to true.

Button with the Primary color scheme from the current theme

@using Telerik.Blazor.Components.Button

<TelerikButton Primary="true">Primary</TelerikButton>

The result from the code snippet above, with the Default theme

Icons

You can put an image, sprite or a font icon in the button to illustrate its purpose for your end users. To apply them, use the following properties:

• for a font icon, use the Icon attribute to set the font icon class.
• for an image, use the ImageUrl attribute to provide the URL
• for a sprite, set the SpriteClass attribute to k-icon MySpriteClass where MySpriteClass defines the CSS rules for the sprite.

You can see how to use the built-in icons in the Font Icons article.

For a custom font icon, define the font and glyph in your Icon CSS class.

The following example shows how to use an image from a URL, a sprite image, and the built-in font icons.

How to use icons in Telerik Button

@using Telerik.Blazor.Components.Button
@using Telerik.Blazor

<TelerikButton SpriteClass="k-icon netherlandsFlag">Sprite</TelerikButton>
<TelerikButton Icon="@IconName.Filter">Font Icon</TelerikButton>
<TelerikButton ImageUrl="https://demos.telerik.com/kendo-ui/content/shared/icons/sports/snowboarding.png">Image URL</TelerikButton>

<style>
    /* the sprite for the first button is defined through a CSS rule matchin its Class */
    .netherlandsFlag {
        background-image: url("https://demos.telerik.com/kendo-ui/content/shared/styles/flags.png");
        background-position: 0 -64px;
    }
</style>

The result from the code snippet above

You can use relative paths to your images in the wwwroot folder. The example above uses absolute paths to make it easy for you to see the results without preparing images.

Disabled State

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

Disabled Telerik Button

@using Telerik.Blazor.Components.Button

<TelerikButton Enabled="false">Disabled Button</TelerikButton>

Comparison between disabled and enabled button

Button Type

The button renders a <button type="submit"> element by default, as this is the default behavior of a button.

You can control the type attribute through the ButtonType property of the component which can accept the following values:

• Submit - Renders a type="submit" attribute. Can submit the form and trigger validation. The default value.
• Button - Renders a type="button" attribute. Does not invoke form validation and submission.
• Reset - Renders a type="reset" attribute. Can reset the current form.

@using Telerik.Blazor.Components.Button
@using Telerik.Blazor

<TelerikButton>Implicit SUBMIT</TelerikButton>
<TelerikButton ButtonType="@ButtonType.Submit">Explicit SUBMIT</TelerikButton>
<TelerikButton ButtonType="@ButtonType.Button">BUTTON</TelerikButton>
<TelerikButton ButtonType="@ButtonType.Reset">RESET</TelerikButton>

See Also

• Live Demo: Button