AutoCompleteColumn.TextChanged Event

Fires when text in a cell changes.

Namespace: DevExpress.XamarinForms.DataGrid

Assembly: DevExpress.XamarinForms.Grid.dll

NuGet Package: DevExpress.XamarinForms.Grid

Declaration

public event EventHandler<AutoCompleteColumnTextChangedEventArgs> TextChanged

Event Data

The TextChanged event's data class is AutoCompleteColumnTextChangedEventArgs. The following properties provide information specific to this event:

Property	Description
AutoCompleteEdit	Gets the cell’s editor.
Reason	Gets a value that specifies how the text in the AutoCompleteColumn was changed.

Example

The example below handles the TextChanged event to supply suggestions for the AutoCompleteColumn. Use the AutoCompleteEdit event argument to obtain the cell’s editor.

XAML

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:dxg="http://schemas.devexpress.com/xamarin/2014/forms/datagrid">
    <ContentPage.Content>
        <dxg:DataGridView ItemsSource="{Binding Path=Employees}">
            <dxg:DataGridView.Columns>
                <dxg:AutoCompleteColumn FieldName="JobTitle"
                                        LoadingProgressMode="Manual"
                                        TextChanged="AutoCompleteColumn_TextChanged">                
                </dxg:AutoCompleteColumn>
            </dxg:DataGridView.Columns>
        </dxg:DataGridView>
    </ContentPage.Content>
</ContentPage>

C#

using System.ComponentModel;
using System.Collections.Generic;
using Xamarin.Forms;

namespace DemoCenter.Forms.Views {
    public partial class FirstLookView : ContentPage {
        public FirstLookView() {
            InitializeComponent();
            BindingContext = new EmployeesRepository();
        }
        private void AutoCompleteColumn_TextChanged(object sender, AutoCompleteColumnTextChangedEventArgs e) {
            AutoCompleteEdit edit = e.AutoCompleteEdit;
            EmployeesRepository employeesRepository = dataGridView.BindingContext as EmployeesRepository;
            if (e.Reason == AutoCompleteEditTextChangeReason.UserInput) {
                edit.IsLoadingInProgress = true;
                Task.Factory.StartNew(new Action(() => {
                    Thread.Sleep(3000);
                    Dispatcher.BeginInvokeOnMainThread(new Action(() => {
                        edit.ItemsSource = employeesRepository.JobTitles
                        .Where(i => i.Title
                        .StartsWith(edit.Text, StringComparison.CurrentCultureIgnoreCase)).ToList();
                        edit.IsLoadingInProgress = false;
                    }));
                }));
            }
        }
    }
    public class EmployeesRepository {
        public IList<Employee> Employees { get; set; }
        public IList<string> Jobs { get; set; }
    }
    public class Employee {
        public string JobTitle { get; set; }
    }
}