Skip to main content

DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

Take the survey Not interested

DataFormDateItem Class

Stores settings of the data form’s date editor.

Namespace: DevExpress.Maui.DataForm

Assembly: DevExpress.Maui.Editors.dll

NuGet Package: DevExpress.Maui.Editors

#Declaration

C#
public class DataFormDateItem :
    DataFormTextItemBase

#Remarks

The DataFormView component automatically creates a DataFormDateItem for the bound data object’s properties of the DateTime type. You can also add a date-time editor and modify its properties manually in XAML or C# code.

The following image shows a Data Form with a date-time editor:

DevExpress DataForm for MAUI -- Date editor

For a list of all supported editors in the 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 Date-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 date-time editor in a DataFormView, add a DataFormDateItem 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.

<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="DateItemSample.MainPage" Shell.NavBarIsVisible="False"
             xmlns:local="clr-namespace:DateItemSample">
    <dxdf:DataFormView x:Name="dataForm" CommitMode="Input" IsAutoGenerationEnabled="False">
        <dxdf:DataFormView.DataObject>
            <local:UserInfo/>
        </dxdf:DataFormView.DataObject>
        <dxdf:DataFormDateItem FieldName="BirthDate" LabelText="Birth Date" 
                               AutofillContentType="AndroidBirthDate"
                               ClearIconVisibility="Always"
                               DisplayFormat="m"
                               MinDate="1920,01,01"
                               UseNativePicker="False"
                               EditorWidth="300"
                               HelpText="Your date of birth"/>
    </dxdf:DataFormView>    
</ContentPage>
using DevExpress.Maui.Core;
using DevExpress.Maui.DataForm;
using DevExpress.Maui.Editors;
using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace DateItemSample {
    public class UserInfo : INotifyPropertyChanged {
        string username;
        public string Username {
            get { return this.username; }
            set {
                if (value != this.username) {
                    this.username = value;
                    NotifyPropertyChanged();
                }
            }
        }
        DateTime birthDate;
        public DateTime BirthDate {
            get { return this.birthDate; }
            set {
                if (value != this.birthDate) {
                    this.birthDate = 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();
        }
    }
}

#Use Attributes to Generate the Editor

You can apply the DataFormDateEditorAttribute to the Data Object’s property whose values you want to edit in a date editor in the DataFormView. Additionally, you can use the DataFormDisplayOptionsAttribute and DataFormItemPositionAttribute to configure display settings for the editor:

using DevExpress.Maui.DataForm;
using System.ComponentModel;
using System.Runtime.CompilerServices;
namespace DateItemSample {
    public class UserInfo : INotifyPropertyChanged {
        string username;
        public string Username {
            get { return this.username; }
            set {
                if (value != this.username) {
                    this.username = value;
                    NotifyPropertyChanged();
                }
            }
        }
        DateTime birthDate;
        [DataFormDateEditor (AutofillContentType = DateAutofillContentType.AndroidBirthDate, ClearIconVisibility = IconVisibility.Always,
            DisplayFormat = "m", MinDate = "1920,01,01", UseNativePicker = false)]
        [DataFormDisplayOptions (EditorWidth = "300", HelpText = "Your date of birth", LabelText = "Birth Date")]
        public DateTime BirthDate {
            get { return this.birthDate; }
            set {
                if (value != this.birthDate) {
                    this.birthDate = 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();
            dataForm.DataObject = new UserInfo();
        }
    }
}
<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="DateItemSample.MainPage" Shell.NavBarIsVisible="False"
             xmlns:local="clr-namespace:DateItemSample">
    <dxdf:DataFormView x:Name="dataForm" CommitMode="Input" IsAutoGenerationEnabled="True">
        <!--...-->
    </dxdf:DataFormView>    
</ContentPage>

#Validate Input

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

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

#Manage the Display Item Value

You can use the following methods to specify or obtain the editor value or display text:

#Specify Layout

Refer to the following help topic for more information on how to position editors in a DataFormView:

Read Tutorial: Layout in Data Form

#Implements

Microsoft.Maui.IFrameworkElement
Microsoft.Maui.Controls.ITabStopElement
See Also