.NET MAUI DataForm Styling

The DataForm control for .NET MAUI provides styling options for customizing its appearance. You can style the DataForm itself, as well as its editors, groups, error messages and validation messages.

The control supports the following styling properties:

• BackgroundColor—Defines the background color of the DataForm.
• BorderColor—Defines the border color of the DataForm.
• BorderThickness—Specifies the border thickness of the DataForm.

The following example demonstrate how to use the styling properties of the DataForm:

• XAML

<telerik:RadDataForm x:Name="dataForm" 
                     BackgroundColor="#E0E9FC" 
                     BorderColor="#8660C5" 
                     BorderThickness="2">
    <telerik:RadDataForm.BindingContext>
        <local:DataTypeEditorsModel />
    </telerik:RadDataForm.BindingContext>
</telerik:RadDataForm>

Note that local in the snippet above points to the namespace where the DataTypeEditorsModel is defined.

Define the ViewModel used as a BindingContext for the DataForm:

• C#

public class DataTypeEditorsModel : NotifyPropertyChangedBase
{
    private string name;
    private DateOnly? startDate;
    private TimeOnly? startTime;
    private DateTime? endDateTime;
    private double? people = 1;
    private bool visited;
    private string phoneNumber;
    private string email;
    private string password;
    private string? url;
    private decimal? cost;
    private string? notes;
    private TimeSpan? duration;
    private EnumValue accommodation = EnumValue.Apartment;
    public enum EnumValue
    {
        SingleRoom,
        Apartment,
        House
    }

    [Required]
    [Display(Name = "First Name")]
    [DataType(DataType.Text)]
    public string FirstName
    {
        get => this.name;
        set => this.UpdateValue(ref this.name, value);
    }

    [Required]
    [Display(Name = "Email address")]
    [DataType(DataType.EmailAddress)]
    [RegularExpression("^([\\w\\.\\-]+)@([\\w\\-]+)((\\.(\\w){2,3})+)$", ErrorMessage = "Please enter valid email address.")]
    public string Email
    {
        get => this.email;
        set => this.UpdateValue(ref this.email, value);
    }

    [Required]
    [Display(Name = "Phone number")]
    [DataType(DataType.PhoneNumber)]
    [RegularExpression("^(?!0+$)(\\+\\d{1,3}[- ]?)?(?!0+$)\\d{10,15}$", ErrorMessage = "Please enter valid phone number.")]
    public string PhoneNumber
    {
        get => this.phoneNumber;
        set => this.UpdateValue(ref this.phoneNumber, value);
    }

    [Required]
    [Display(Name = "Enter password")]
    [RegularExpression("^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9])(?=.*?[#?!@$%^&*-]).{8,}", ErrorMessage = "Password must contain: -at least one upper case, " +
        "at least one lower case, at least one digit, at least one special character and to be at least 8 symbols")]
    [DataType(DataType.Password)]
    public string Password
    {
        get => this.password;
        set => this.UpdateValue(ref this.password, value);
    }

    [Required]
    [Display(Name = "Star date")]
    [DataType(DataType.Date)]
    public DateOnly? StartDate
    {
        get => this.startDate;
        set => this.UpdateValue(ref this.startDate, value);
    }

    [Required]
    [Display(Name = "Start time")]
    [DataType(DataType.Time)]
    public TimeOnly? StartTime
    {
        get => this.startTime;
        set => this.UpdateValue(ref this.startTime, value);
    }

    [Required]
    [Display(Name = "End date and time")]
    [DataType(DataType.DateTime)]
    public DateTime? EndDateTime
    {
        get => this.endDateTime;
        set => this.UpdateValue(ref this.endDateTime, value);
    }

    [Display(Name = "Number of People")]
    public double? People
    {
        get => this.people;
        set => this.UpdateValue(ref this.people, value);
    }

    [Display(Name = "Select accomodation")]
    public EnumValue Accommodation
    {
        get
        {
            return this.accommodation;
        }
        set
        {
            if (this.accommodation != value)
            {
                this.accommodation = value;
                this.OnPropertyChanged();
            }
        }
    }

    [Display(Name = "Visited before")]
    public bool Visited
    {
        get => this.visited;
        set => this.UpdateValue(ref this.visited, value);
    }

    [Display(Name = "Duration")]
    public TimeSpan? Duration
    {
        get => this.duration;
        set => this.UpdateValue(ref this.duration, value);
    }

    [Display(Name = "Web address")]
    [DataType(DataType.Url)]
    [RegularExpression("^(http:\\/\\/www\\.|https:\\/\\/www\\.|http:\\/\\/|https:\\/\\/)?[a-z0-9]+([\\-\\.]{1}[a-z0-9]+)*\\.[a-z]{2,5}(:[0-9]{1,5})?(\\/.*)?$", ErrorMessage = "Please enter valid url.")]
    public string? URL
    {
        get => this.url;
        set => this.UpdateValue(ref this.url, value);
    }

    [Display(Name = "Total cost")]
    [DataType(DataType.Currency)]
    [DisplayFormat(DataFormatString = "C")]
    public decimal? Cost
    {
        get => this.cost;
        set => this.UpdateValue(ref this.cost, value);
    }

    [Display(Name = "Notes")]
    [DataType(DataType.MultilineText)]
    public string? Notes
    {
        get => this.notes;
        set => this.UpdateValue(ref this.notes, value);
    }
}

For a runnable example with the DataForm Styling scenario, see the SDKBrowser Demo Application and go to DataForm > Styling category.