TextArea Overview
The Telerik TextArea for Blazor is a highly customizable multi-line text input area. It provides features like auto resizing based on the user input, floating label functionality and events to respond to user actions.
The TextArea component is part of Telerik UI for Blazor, a
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Basic TextArea
To use the Telerik TextArea in your Blazor application:
- add the
<TelerikTextArea>tag. - set its
Value(one and two-way data binding applicable) parameter to a string property.
Basic TextArea with two-way value binding
<TelerikTextArea @bind-Value="@TextAreaValue"
Label="Enter Information"
AutoSize="true">
</TelerikTextArea>
<br />
@TextAreaValue
@code {
public string TextAreaValue { get; set; }
}
Component namespace and reference
<TelerikTextArea @bind-Value="@TextAreaValue" @ref="@TextAreaRef"></TelerikTextArea>
@code {
public Telerik.Blazor.Components.TelerikTextArea TextAreaRef { get; set; }
public string TextAreaValue { get; set; }
}
Features
AutoComplete-bool, defaults tofalse- maps to the autocomplete attribute of the HTML<textarea>.AutoSize-bool, defaults tofalse- specifies if the TextArea will adjust its height based on the user input.Class- the CSS class that will be rendered on the main wrapping element.Enabled-bool, defaults totrue- whether the TextArea is enabled.Id- renders as theidattribute on the<textarea>element, so you can attach a<label for="">.Label- thelabelelement rendered next to the<textarea>to provide the user with information on its purpose. It covers the input in a fashion similar to a placeholder, and floating animation upwards on focus. If you don't want this effect or the height increase it causes, use theIdparameter to attach your own<label>tag.Name- thenameattribute of the HTML element. It is usually required so theAutoCompletewill be honored by the browser.PlaceHolder- astringthat maps to theplaceholderattribute of the HTML element. If aLabelis defined, it will be shown instead of the placeholder when the input is not focused.TabIndex- maps to thetabindexattribute of the HTML element. You can use it to customize the order in which the inputs in your form focus with theTabkey.Title- maps to thetitleattribute of the HTML element. You can use it to add a tooltip.Value- get/set the value of the input, can be used for binding.Events - see the Events article for more information.
Validation - see the Input Validation article.
TextArea with its most common features and symbols counter
<label for="myCustomTextAreaId">My Telerik TextArea</label>
<TelerikTextArea @bind-Value="@TextAreaValue"
Id="myCustomTextAreaId"
Name="myCustomTextAreaId"
PlaceHolder="Enter some Information"
AutoComplete="true"
TabIndex="2"
AutoSize="true">
</TelerikTextArea>
<div class="k-counter-container">
<span>@TextAreaValue.Length</span><span>/200</span>
</div>
@code {
public string TextAreaValue { get; set; } = String.Empty;
}