DxDropDown.BodyContentTemplate Property

<DxButton Id="showDDbutton" Click="() => IsOpen = true">Show DropDown</DxButton>
<DxDropDown @bind-IsOpen="@IsOpen"
            Width="400"
            HeaderVisible="true"
            HeaderText="Edit Contact"
            FooterVisible="true">
    <BodyContentTemplate>
        <SampleEditForm />
    </BodyContentTemplate>
    <FooterContentTemplate>
        <DxButton RenderStyle="ButtonRenderStyle.Primary" Text="OK" Click="@context.CloseCallback" />
        <DxButton RenderStyle="ButtonRenderStyle.Secondary" Text="Cancel" Click="@context.CloseCallback" />
    </FooterContentTemplate>
</DxDropDown>

@code {
    bool IsOpen { get; set; } = false;
}

<DxFormLayout Data="@editFormData" CssClass="w-100">
    <DxFormLayoutItem Field="@nameof(FormDataItem.Name)" Caption="Contact Name:" CaptionPosition="CaptionPosition.Vertical" ColSpanMd="12">
        <DxTextBox Text="@(((string)((ValueEditContext)context).Value))" />
    </DxFormLayoutItem>
    <DxFormLayoutItem Field="@nameof(FormDataItem.BirthDate)" Caption="Birth Date:" CaptionPosition="CaptionPosition.Vertical" ColSpanMd="6">
        <DxDateEdit Date="@(((DateTime)((ValueEditContext)context).Value))" />
    </DxFormLayoutItem>
    <DxFormLayoutItem Field="@nameof(FormDataItem.YearsWorked)" Caption="Years Worked:" CaptionPosition="CaptionPosition.Vertical" ColSpanMd="6">
        <DxSpinEdit Value="@(((int)((ValueEditContext)context).Value))"  />
    </DxFormLayoutItem>
    <DxFormLayoutItem Field="@nameof(FormDataItem.Position)" Caption="Position:" CaptionPosition="CaptionPosition.Vertical" ColSpanMd="12">
        <DxComboBox Data="@(new List<string>() {"Sales Representative", "Designer"})"
                    Value="@(((string)((ValueEditContext)context).Value))">
        </DxComboBox>
    </DxFormLayoutItem>
</DxFormLayout>

@code {
    FormDataItem editFormData = new() { Name = "Nancy Davolio", BirthDate = DateTime.Now.AddYears(-30), YearsWorked = 3, Position = "Sales Representative" };
}