Blazor - Get Started with Input

Blazor - Get Started with Smart.Input

Setup The Project

Follow the Getting Started guide to set up your Blazor Application with Smart UI.

Setup Basic Input

Smart.Input is a custom input element with additional built-in features such as a drop down list with predefined options.

The list of avaible options is set using the DataSource property.

  1. Add the Input component to the Pages/Index.razor file
    <Input></Input>
  2. Inside the @code block, create an array of elements and set it as DataSource of the component
    <Input DataSource="drinks" Placeholder="Type text here..."></Input>
    
    @code{
        private string[] drinks = new string[]{"Water", "Juice", "Soda", "Tea", "Beer", "Wine", };
    }
Basic input

Input Customization

Smart.Input can be styled in different ways by setting the Class property. The Input can be default, outlined or underlined

<Input DataSource="drinks" Placeholder="Type text here..." Class="underlined"></Input>
Input modes

Input Events

Smart.Input provides multiple events that can help you expand the component's functionality.
Each event object has unique event.detail parameters.

  • OnChange - triggered when the selection is changed.
    Event Details: string label, dynamic oldLabel, dynamic oldValue, dynamic value
  • OnChanging - triggered on each key up event of the Input, if the value is changed.
    Event Details: dynamic oldValue, dynamic value
  • OnItemClick - triggered when the user clicks on an item from the popup list.
    Event Details: dynamic item, string label, dynamic value

The demo below uses the OnChanging Event to display the previous value of the input field:

<h2>Previous value was:</h2>
<h2>@oldValue</h2>
<Input DataSource="drinks" Placeholder="Type text here..." OnChanging="OnChanging"></Input>

@code{
    private string[] drinks = new string[]{"Water", "Juice", "Soda", "Tea", "Beer", "Wine", };

    string oldValue;
    private void OnChanging(Event ev)
    {
        if(ev.ContainsKey("Detail")){
            InputChangingEventDetail detail = ev["Detail"];
            oldValue = detail.OldValue;
        }
    }
}
Input OnChanging event