Blazor Time Input

The Blazor Bootstrap TimeInput component is constructed using an HTML input of type="time" which limits user input based on pre-defined parameters. This component enables users to input a time using a text box with validation or a special time picker interface.

Parameters

Name	Type	Default	Description	Added Version
AutoComplete	bool	false	If true, DateInput can complete the values automatically by the browser.	1.6.0
Disabled	bool	false	Gets or sets the disabled state.	1.6.0
EnableMinMax	bool	false	Determines whether to restrict the user input to Min and Max range. If true, restricts the user input between the Min and Max range. Else accepts the user input.	1.6.0
Max	TValue		Gets or sets the max. Max ignored if EnableMinMax="false".	1.6.0
Min	TValue		Gets or sets the min. Min ignored if EnableMinMax="false".	1.6.0
Placeholder	`string?`	null	Gets or sets the placeholder.	1.6.0
Value	TValue		Gets or sets the value.	1.6.0
ValueExpression	`Expression<Func<TValue>>`		Gets or sets the expression	1.6.0

Methods

Name	Description	Added Version
Disable	Disables time input.	1.6.0
Enable	Enables time input.	1.6.0

Events

Name	Description
ValueChanged	This event fired on every user keystroke that changes the `TimeInput` value.

Examples

Basic usage

NOTE

The input UI generally varies from browser to browser. In unsupported browsers, the control degrades gracefully to type="text".

Blazor Bootstrap: Time Input Component - Basic usage

<div class="mb-3">
    <TimeInput TValue="TimeOnly" @bind-Value="@date1" />
</div>
<div class="mb-3">Entered date: @date1</div>

@code {
    private TimeOnly date1 = new TimeOnly(13, 14);
}

See demo here

Generic type

The Blazor Bootstrap TimeInput component supports TimeOnly and TimeOnly?. In the below example, TValue is set to TimeOnly and TimeOnly?.

<div class="mb-3">
    <strong>TimeOnly</strong>:
</div>
<div class="mb-3">
    <TimeInput TValue="TimeOnly" @bind-Value="@time1" />
</div>
<div class="mb-3">Entered time: @time1</div>

<div class="mb-3">
    <strong>TimeOnly?</strong>:
</div>
<div class="mb-3">
    <TimeInput TValue="TimeOnly?" @bind-Value="@time2" />
</div>
<div class="mb-3">Entered time: @time2</div>

@code {
    private TimeOnly time1 = new TimeOnly(6, 40);
    private TimeOnly? time2;
}

See demo here

Enable min and max

Set EnableMinMax="true" and set the Min and Max parameters to restrict the user input between the Min and Max range.

NOTE

If the user tries to enter a number in the TimeInput field which is out of range, then it will override with Min or Max value based on the context. If the user input is less than the Min value, then it will override with the Min value. If the user input exceeds the Max value, it will override with the Max value.

<div class="mb-3">
    <strong>TimeOnly</strong>:
</div>
<div class="mb-3">
    <TimeInput TValue="TimeOnly" @bind-Value="@time1" EnableMinMax="true" Min="@min1" Max="@max1" />
</div>
<div class="mb-3">Min time: @min1</div>
<div class="mb-3">Max time: @max1</div>
<div class="mb-3">Entered time: @time1</div>

<div class="mb-3">
    <strong>TimeOnly?</strong>:
</div>
<div class="mb-3">
    <TimeInput TValue="TimeOnly?" @bind-Value="@time2" EnableMinMax="true" Min="@min2" Max="@max2" />
</div>
<div class="mb-3">Min time: @min2</div>
<div class="mb-3">Max time: @max2</div>
<div class="mb-3">Entered time: @time2</div>

@code {
    private TimeOnly time1, min1, max1;
    private TimeOnly? time2, min2, max2;

    protected override void OnInitialized()
    {
        time1 = new TimeOnly(10, 0); // 10:00 AM
        min1 = new TimeOnly(8, 0); // 08:00 AM
        max1 = new TimeOnly(18, 0); // 06:00 PM

        time2 = null;
        min2 = new TimeOnly(8, 0); // 08:00 AM
        max2 = new TimeOnly(18, 0); // 06:00 PM
    }
}

See demo here

Disable

Use the Disabled parameter to disable the TimeInput.

<div class="mb-3">
    <TimeInput TValue="TimeOnly" @bind-Value="@time1" Disabled="@disabled" />
</div>
<div class="mb-3">Entered time: @time1</div>

<Button Color="ButtonColor.Primary" @onclick="Enable"> Enable </Button>
<Button Color="ButtonColor.Secondary" @onclick="Disable"> Disable </Button>
<Button Color="ButtonColor.Warning" @onclick="Toggle"> Toggle </Button>

@code {
    private TimeOnly time1 = new TimeOnly(10, 50); // 10:50 AM
    private bool disabled = true;

    private void Enable() => disabled = false;

    private void Disable() => disabled = true;

    private void Toggle() => disabled = !disabled;
}

Also, use Enable() and Disable() methods to enable and disable the TimeInput.

NOTE

Do not use both the Disabled parameter and Enable() & Disable() methods.

<div class="mb-3">
    <TimeInput @ref="timeInput1" TValue="TimeOnly" @bind-Value="@time1" />
</div>
<div class="mb-3">Entered time: @time1</div>

<Button Color="ButtonColor.Secondary" @onclick="Disable"> Disable </Button>
<Button Color="ButtonColor.Primary" @onclick="Enable"> Enable </Button>

@code {
    private TimeInput<TimeOnly> timeInput1 = default!;

    private TimeOnly time1 = new TimeOnly(10, 50); // 10:50 AM

    private void Disable() => timeInput1.Disable();

    private void Enable() => timeInput1.Enable();
}

See demo here

Validations

Like any other blazor input component, TimeInput component supports validations. Use the Use the DataAnnotations to validate the user input before submitting the form. In the below example, we used the Required attributes.

@using System.ComponentModel.DataAnnotations

<style>
    .valid.modified:not([type=checkbox]) {
        outline: 1px solid #26b050;
    }

    .invalid {
        outline: 1px solid red;
    }

    .validation-message {
        color: red;
    }
</style>

<EditForm EditContext="@editContext" OnValidSubmit="HandleValidSubmit" novalidate>
    <DataAnnotationsValidator />

    <div class="form-group row mb-3">
        <label class="col-md-2 col-form-label">Flight Number: <span class="text-danger">*</span></label>
        <div class="col-md-10">
            <InputText class="form-control" @bind-Value="flightForm.FlightNumber" Placeholder="Enter Flight Number" />
            <ValidationMessage For="@(() => flightForm.FlightNumber)" />
        </div>
    </div>

    <div class="form-group row mb-3">
        <label class="col-md-2 col-form-label">Departure Date: <span class="text-danger">*</span></label>
        <div class="col-md-10">
            <DateInput TValue="DateOnly?" class="form-control" @bind-Value="flightForm.DepartureDate" />
            <ValidationMessage For="@(() => flightForm.DepartureDate)" />
        </div>
    </div>

    <div class="form-group row mb-3">
        <label class="col-md-2 col-form-label">Departure Time: <span class="text-danger">*</span></label>
        <div class="col-md-10">
            <TimeInput TValue="TimeOnly?" @bind-Value="flightForm.DepartureTime" />
            <ValidationMessage For="@(() => flightForm.DepartureTime)" />
        </div>
    </div>

    <div class="form-group row mb-3">
        <label class="col-md-2 col-form-label">Arrival Date: <span class="text-danger">*</span></label>
        <div class="col-md-10">
            <DateInput TValue="DateOnly?" class="form-control" @bind-Value="flightForm.ArrivalDate" />
            <ValidationMessage For="@(() => flightForm.ArrivalDate)" />
        </div>
    </div>

    <div class="form-group row mb-3">
        <label class="col-md-2 col-form-label">Arrival Time: <span class="text-danger">*</span></label>
        <div class="col-md-10">
            <TimeInput TValue="TimeOnly?" @bind-Value="flightForm.ArrivalTime" />
            <ValidationMessage For="@(() => flightForm.ArrivalTime)" />
        </div>
    </div>

    <div class="row">
        <div class="col-md-12 text-right">
            <Button Type="ButtonType.Button" Color="ButtonColor.Secondary" Class="float-end" @onclick="ResetForm">Reset</Button>
            <Button Type="ButtonType.Submit" Color="ButtonColor.Success" Class="float-end me-2">Submit</Button>
        </div>
    </div>
</EditForm>

@code {
    private FlightForm flightForm = new();
    private EditContext editContext;

    [Inject] ToastService _toastService { get; set; }

    protected override void OnInitialized()
    {
        editContext = new EditContext(flightForm);
        base.OnInitialized();
    }

    public void HandleValidSubmit()
    {
        var toastMessage = new ToastMessage
        (
            type: ToastType.Success,
            iconName: IconName.Check2All,
            title: "Success!",
            helpText: $"{DateTime.Now.ToLocalTime()}",
            message: "Flight schedule created."
        );
        _toastService.Notify(toastMessage);
    }

    private void ResetForm()
    {
        flightForm = new();
        editContext = new EditContext(flightForm);
    }

    public class FlightForm
    {
        [Required(ErrorMessage = "Flight Number required.")]
        public string FlightNumber { get; set; }

        [Required(ErrorMessage = "Departure Date required.")]
        public DateOnly? DepartureDate { get; set; }

        [Required(ErrorMessage = "Departure Time required.")]
        public TimeOnly? DepartureTime { get; set; }

        [Required(ErrorMessage = "Arrival Date required.")]
        public DateOnly? ArrivalDate { get; set; }

        [Required(ErrorMessage = "Arrival Time required.")]
        public TimeOnly? ArrivalTime { get; set; }
    }
}

See demo here

Events: ValueChanged

This event fires on every user keystroke/selection that changes the TimeInput value.

<div class="mb-3">
    <TimeInput TValue="TimeOnly" Value="time1" ValueExpression="() => time1" ValueChanged="(value) => TimeChanged(value)" />
</div>
<div class="mb-3">Changed time: @time1</div>

@code {
    private TimeOnly time1 = new TimeOnly(10, 0); // 10:00 AM

    private void TimeChanged(TimeOnly timeOnly)
    {
        time1 = timeOnly;
    }
}

See demo here

Restrict the date field based on the entry in another date field

One common scenario is that the time fields are restricted based on the entry in another time field. In the example below, we restrict the arrival time based on the selection of departure.

@using System.ComponentModel.DataAnnotations

<style>
    .valid.modified:not([type=checkbox]) {
        outline: 1px solid #26b050;
    }

    .invalid {
        outline: 1px solid red;
    }

    .validation-message {
        color: red;
    }
</style>

<EditForm EditContext="@editContext" OnValidSubmit="HandleValidSubmit" novalidate>
    <DataAnnotationsValidator />

    <div class="form-group row mb-3">
        <label class="col-md-2 col-form-label">Departure Time: <span class="text-danger">*</span></label>
        <div class="col-md-10">
            <TimeInput TValue="TimeOnly?"
                       Value="flightForm.DepartureTime"
                       ValueExpression="() => flightForm.DepartureTime"
                       ValueChanged="(value) => DepartureTimeChanged(value)" />
            <ValidationMessage For="@(() => flightForm.DepartureTime)" />
        </div>
    </div>

    <div class="form-group row mb-3">
        <label class="col-md-2 col-form-label">Arrival Time: <span class="text-danger">*</span></label>
        <div class="col-md-10">
            <TimeInput @ref="arrivalTimeInput" TValue="TimeOnly?"
                       @bind-Value="flightForm.ArrivalTime"
                       EnableMinMax="true"
                       Min="arrivalMinTime"
                       Max="arrivalMaxTime"
                       Disabled="true" />
            <ValidationMessage For="@(() => flightForm.ArrivalTime)" />
        </div>
    </div>

    <div class="row">
        <div class="col-md-12 text-right">
            <Button Type="ButtonType.Button" Color="ButtonColor.Secondary" Class="float-end" @onclick="ResetForm">Reset</Button>
            <Button Type="ButtonType.Submit" Color="ButtonColor.Success" Class="float-end me-2">Submit</Button>
        </div>
    </div>
</EditForm>

@code {
    TimeInput<TimeOnly?> arrivalTimeInput = default!;

    private FlightForm flightForm = new();
    private EditContext editContext;

    private TimeOnly? arrivalMinTime;
    private TimeOnly? arrivalMaxTime;

    [Inject] ToastService _toastService { get; set; }

    protected override void OnInitialized()
    {
        editContext = new EditContext(flightForm);
        base.OnInitialized();
    }

    private void DepartureTimeChanged(TimeOnly? departureTime)
    {
        if (departureTime is null || !departureTime.HasValue)
        {
            flightForm.DepartureTime = null;
            flightForm.ArrivalTime = null;
            arrivalMinTime = null;
            arrivalMaxTime = null;
            arrivalTimeInput.Disable();

            return;
        }

        flightForm.DepartureTime = departureTime;
        flightForm.ArrivalTime = null;
        arrivalMinTime = departureTime.Value.AddHours(1);
        arrivalMaxTime = departureTime.Value.AddHours(12);
        arrivalTimeInput.Enable();
    }

    public void HandleValidSubmit()
    {
        var toastMessage = new ToastMessage
        (
            type: ToastType.Success,
            iconName: IconName.Check2All,
            title: "Success!",
            helpText: $"{DateTime.Now.ToLocalTime()}",
            message: "Flight schedule created."
        );
        _toastService.Notify(toastMessage);
    }

    private void ResetForm()
    {
        flightForm = new();
        editContext = new EditContext(flightForm);
    }

    public class FlightForm
    {
        [Required(ErrorMessage = "Departure Time required.")]
        public TimeOnly? DepartureTime { get; set; }

        [Required(ErrorMessage = "Arrival Time required.")]
        public TimeOnly? ArrivalTime { get; set; }
    }
}

Blazor Time Input

Parameters​

Methods​

Events​

Examples​

Basic usage​

Generic type​

Enable min and max​

Disable​

Validations​

Events: ValueChanged​

Restrict the date field based on the entry in another date field​

Parameters

Methods

Events

Examples

Basic usage

Generic type

Enable min and max

Disable

Validations

Events: ValueChanged

Restrict the date field based on the entry in another date field