Radio

Radio buttons allow the user to select a single choice from a group of options.

Use radio buttons (not switches) when only one item can be selected from a list.

API
RadioGroup

Selected Option: 

<MudForm>
    <MudRadioGroup @bind-Value="SelectedOption">
        <MudRadio Value="@("Radio 1")" Color="Color.Primary">Primary</MudRadio>
        <MudRadio Value="@("Radio 2")" Color="Color.Secondary">Secondary</MudRadio>
        <MudRadio Value="@("Radio 3")">Default</MudRadio>
        <MudRadio Value="@("Radio 4")" Color="Color.Primary" Disabled="true">Disabled</MudRadio>
    </MudRadioGroup>
</MudForm>

<div class="d-flex align-center">
    <MudButton Variant="Variant.Outlined" OnClick="Reset">Reset</MudButton>
    <MudText Class="ml-4">Selected Option: @SelectedOption</MudText>
</div>

@code {
    public string SelectedOption { get; set; }

    private void Reset()
    {
        SelectedOption = null;
    }
}
Color

<MudRadioGroup T="int">
    <MudRadio Value="1" Color="Color.Primary" UncheckedColor="Color.Default">One</MudRadio>
    <MudRadio Value="2" Color="Color.Secondary" UncheckedColor="Color.Default">Two</MudRadio>
    <MudRadio Value="3" Color="Color.Success" UncheckedColor="Color.Error">Three</MudRadio>
    <MudRadio Value="4" Color="Color.Primary" Disabled="true">Four</MudRadio>
</MudRadioGroup>
Dense

<MudRadioGroup @bind-Value="Dense_Radio">
    <MudRadio Value="true" Color="Color.Primary" Dense="true">Dense</MudRadio>
    <MudRadio Value="false" Color="Color.Secondary" Dense="false">Normal</MudRadio>
</MudRadioGroup>

@code {
    public bool Dense_Radio { get; set; } = true;
}
Sizes

<MudRadioGroup @bind-Value="Radio_Size">
    <MudRadio Value="1" Color="Color.Primary" Size="Size.Small">Small</MudRadio>
    <MudRadio Value="2" Color="Color.Secondary" Size="Size.Medium">Medium</MudRadio>
    <MudRadio Value="3" Color="Color.Tertiary" Size="Size.Large">Large</MudRadio>
</MudRadioGroup>

@code { 
    public int Radio_Size { get; set; } = 2;
}
Content Placement

<MudGrid>
    <MudItem xs="12" md="1">
        <MudRadioGroup @bind-Value="Placement">
            <MudRadio Color="Color.Primary" Value="@(Placement.Top)">Top</MudRadio>
            <MudRadio Color="Color.Primary" Value="@(Placement.Bottom)">Bottom</MudRadio>
            <MudRadio Color="Color.Primary" Value="@(Placement.Start)">Start</MudRadio>
            <MudRadio Color="Color.Primary" Value="@(Placement.End)">End</MudRadio>
            <MudRadio Color="Color.Primary" Value="@(Placement.Left)">Left</MudRadio>
            <MudRadio Color="Color.Primary" Value="@(Placement.Right)">Right</MudRadio>
        </MudRadioGroup>
    </MudItem>
    <MudItem xs="12" md="9" Class="d-flex justify-center align-center my-auto">
        <MudRadioGroup T="string">
            <MudRadio T="string" LabelPlacement="@Placement" Color="Color.Secondary">Content Placement</MudRadio>
        </MudRadioGroup>
    </MudItem>
    <MudItem xs="12" md="2" Style="width:100%"></MudItem>
</MudGrid>

@code {
    public Placement Placement { get; set; } = Placement.Right;
}
ReadOnly and Disabled mode

All child MudRadio components can be Disabled or set as ReadOnly from the parent MudRadioGroup.

Selected Option 1:

Selected Option 2: 

<MudGrid>
    <MudItem sm="12" md="6">
        <MudRadioGroup @bind-Value="SelectedOption1" ReadOnly="ReadOnly">
            <MudRadio Value="@("Radio 1")">Radio 1</MudRadio>
            <MudRadio Value="@("Radio 2")">Radio 2</MudRadio>
            <MudRadio Value="@("Radio 3")">Radio 3</MudRadio>
            <MudRadio Value="@("Radio 4")">Radio 4</MudRadio>
        </MudRadioGroup>
        <MudSwitch @bind-Value="ReadOnly" Color="Color.Primary" Label="ReadOnly" />
        <MudText>Selected Option 1: @SelectedOption1</MudText>
    </MudItem>
    <MudItem sm="12" md="6">
        <MudRadioGroup @bind-Value="SelectedOption2" Disabled="Disabled">
            <MudRadio Value="@("Radio 1")">Radio 1</MudRadio>
            <MudRadio Value="@("Radio 2")">Radio 2</MudRadio>
            <MudRadio Value="@("Radio 3")">Radio 3</MudRadio>
            <MudRadio Value="@("Radio 4")">Radio 4</MudRadio>
        </MudRadioGroup>
        <MudSwitch @bind-Value="Disabled" Color="Color.Primary" Label="Disabled" />
        <MudText>Selected Option 2: @SelectedOption2</MudText>
    </MudItem>
</MudGrid>

@code {
    public string SelectedOption1 { get; set; }
    public string SelectedOption2 { get; set; }
    public bool Disabled { get; set; }
    public bool ReadOnly { get; set; }
}
Accessibility

A MudRadioGroup accepts the following shortcuts:

Keys Action
Tab, Shift+Tab Move focus into or out of the radio group
Enter, NumpadEnter, Space Select the focused radio button
Left Arrow, Up Arrow, Right Arrow, Down Arrow Cycle focus between radio buttons
Backspace Unselect the focused radio button
Note: Disabled radio buttons are unaffected by these shortcuts and cannot be focused 

<MudForm>
    <MudRadioGroup @bind-Value="SelectedOption">
        <MudRadio Value="@("Radio 1")" Color="Color.Primary">Primary</MudRadio>
        <MudRadio Value="@("Radio 2")" Color="Color.Secondary">Secondary</MudRadio>
        <MudRadio Value="@("Radio 3")" Color="Color.Tertiary">Tertiary</MudRadio>
        <MudRadio Value="@("Radio 4")">Default</MudRadio>
        <MudRadio Value="@("Radio 4")" Color="Color.Primary" Disabled="true">Disabled</MudRadio>
    </MudRadioGroup>
</MudForm>

@code {
    public string SelectedOption { get; set; }
}
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