DataFormTimeItem Class

Stores settings of the data form’s time editor.

Assembly: DevExpress.Maui.Editors.dll

NuGet Package: DevExpress.Maui.Editors

Declaration

public class DataFormTimeItem :
    DataFormTextItemBase

Remarks

The DataFormView component automatically creates a DataFormTimeItem for each TimeSpan property in the bound data object. You can also add a time editor and modify its properties in XAML or C# code.

The following animation illustrates a Data Form with a time editor:

DevExpress DataForm for MAUI -- Time editor

For the list of all editors supported by DataFormView, refer to the following topic: Data Form – Editors.

Get Started

The following help topic describes how to create your first app with the DevExpress Data Form component for MAUI:

Read Tutorial: Get Started with Data Form

Define Time Editor Settings in XAML

Specify the DataFormView.DataObject property to define an object whose properties are to be edited in the DataFormView.

To show a time editor in a DataFormView, add a DataFormTimeItem object to the DataFormView.Items collection.

Use the item’s FieldName property to specify the name of the property to be edited in the Data Form.

Note: The DataFormView.Items property is a content property. You can skip the <Items> tag in your markup.

XAML

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:dxdf="clr-namespace:DevExpress.Maui.DataForm;assembly=DevExpress.Maui.Editors"
             x:Class="TimeItemSample.MainPage" Shell.NavBarIsVisible="False"
             xmlns:local="clr-namespace:TimeItemSample">
    <dxdf:DataFormView x:Name="dataForm" CommitMode="Input" IsAutoGenerationEnabled="False">
        <dxdf:DataFormView.DataObject>
            <local:UserInfo/>
        </dxdf:DataFormView.DataObject>
        <dxdf:DataFormTimeItem FieldName="Time" 
                               LabelText="Time"
                               LabelIcon="time_icon" 
                               ClearIconVisibility="Always"
                               EditorWidth="300" />
    </dxdf:DataFormView>    
</ContentPage>

using DevExpress.Maui.Core;
using DevExpress.Maui.DataForm;
using DevExpress.Maui.Editors;
using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace TimeItemSample {
    public class UserInfo : INotifyPropertyChanged {
        string username;
        public string Username {
            get { return this.username; }
            set {
                if (value != this.username) {
                    this.username = value;
                    NotifyPropertyChanged();
                }
            }
        }
        DateTime time_value;
        public DateTime Time {
            get { return this.time_value; }
            set {
                if (value != this.time_value) {
                    this.time_value = value;
                    NotifyPropertyChanged();
                }
            }
        }
        public event PropertyChangedEventHandler PropertyChanged;
        private void NotifyPropertyChanged([CallerMemberName] String propertyName = "") {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
    public partial class MainPage : ContentPage {
        public MainPage() {
            InitializeComponent();
        }
    }
}

Validate Input

You can use the following techniques to validate user input values:

Use data annotations.
Handle the DataFormView.ValidateProperty and/or DataFormView.ValidateForm event.
Implement the IDataErrorInfo or INotifyDataErrorInfo interface in the Data Object.

For more information about input data validation, refer to the following help topic: Validate User Input in Data Form.

Manage the Display Item Value

The following methods specify or obtain an editor’s value:

DataFormItem.SetValue(Object newValue) – Specifies the Data Form editor value.
DataFormItem.GetValue() – Returns the Data Form editor value.
DataFormView.GetValue(String propertyName) – Locates the Data Form editor by the corresponding property name and returns the editor value.