<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;
}