Blazor - Get Started with Multi Input

Blazor - Get Started with Smart.MultiInput

Setup The Project

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

Setup Basic Multi Input

Smart.MultiInput is an input that allows selecting from a predefined drop down list.

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

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


When the Readonly property is set to true, the input field will be disabled and changes will be allowed only by using the dropdown list.

<MultiInput DataSource="drinks" Readonly="true"></MultiInput>
Readonly multi input

MultiInput Methods

Smart.MultiInput can be easily controlled programmatically using some of the built-in Methods.

Create buttons that can control the Open/Close state of the dropdown list:

<Button OnClick="Open">Open</Button> <Button OnClick="Close">Close</Button>
<MultiInput @ref="multiInput" DataSource="drinks"></MultiInput>

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

  private void Open(){
  private void Close(){
MultiInput methods

MultiInput Customization

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

<MultiInput DataSource="drinks" Class="underlined"></MultiInput>
Input styling

MultiInput Events

Smart.MultiInput provides an OnChange Event that can help you expand the component's functionality.
The event object has unique event.detail parameters.

  • OnChange - triggered when the selection is changed.
    Event Details: string label, dynamic oldLabel, dynamic oldValue, dynamic value

The demo below uses the OnChange Event to display the selected options:

<h2>Selected values: @values</h2>
<MultiInput DataSource="drinks" OnChange="OnChange"></MultiInput>

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

    private void OnChange(Event ev){
            MultiInputChangeEventDetail detail = ev["Detail"];
            values = detail.Value;
OnChange MultiInput event

Two-way Value Binding

The MultiInput component also supports two-way value binding:

<MultiInput DataSource="drinks" @bind-Value = "@textValue"></MultiInput>

    private string[] drinks = new string[]{"Water", "Juice", "Soda", "Tea", "Beer", "Wine" };
    string textValue = "";
Input value binding