AutoCompleteTextBlock

[rafaqat-ali-confiz]

Hi hermitdave,

I found your autocompleteTextblock very useful. But There was a problem. I had to bind Text of textbox in binding TwoWay but your given control was not able to do this. It was currenlty getting text and not setting. I have fixed this issue. If you access me at your repository then I can add my effort.

[batuypn]

I encountered same problem. Can you send me the solution?
Thank you.

[rafaqat-ali-confiz]

Here is main class which I have modified.

using System;
using System.Collections.ObjectModel;
using System.Linq;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Input;

namespace CustomAutoCompleteBox
{
public sealed class AutoCompleteTextBlock : Control
{
TextBox textBox = null;
ListBox listBox = null;
Grid grid = null;
public AutoCompleteTextBlock()
{
this.DefaultStyleKey = typeof(AutoCompleteTextBlock);

    }


    protected override void OnApplyTemplate()
    {
        base.OnApplyTemplate();

        this.textBox = GetTemplateChild("tbChild") as TextBox;
        this.listBox = GetTemplateChild("lbChild") as ListBox;

        this.grid = GetTemplateChild("spContainer") as Grid;

        if (textBox != null && this.listBox != null)
        {
            textBox.TextChanged += textBox_TextChanged;
            textBox.KeyUp += textBox_KeyUp;
        }

        if (this.ItemsSource != null)
            this.listBox.ItemsSource = ItemsSource;

        if (this.Text != null)
            this.textBox.Text = Text;

        this.grid.MaxHeight = this.MaxHeight;
    }

    void textBox_KeyUp(object sender, KeyRoutedEventArgs e)
    {
        Text=this.textBox.Text;
    }



    public ObservableCollection<string> ItemsSource 
    {
        get { return (ObservableCollection<string>)GetValue(ItemsSourceProperty); }
        set { SetValue(ItemsSourceProperty, value); }
    }
    public string Text
    {
        get { return (string)GetValue(TextProperty); }
        set { SetValue(TextProperty, value); }
    }
    public static readonly DependencyProperty TextProperty = DependencyProperty.Register("Text", typeof(string), typeof(AutoCompleteTextBlock), new PropertyMetadata(null));
    public static readonly DependencyProperty ItemsSourceProperty = DependencyProperty.Register("ItemsSource", typeof(ObservableCollection<string>), typeof(AutoCompleteTextBlock), new PropertyMetadata(null));




    void textBox_TextChanged(object sender, TextChangedEventArgs e)
    {
        this.listBox.SelectionChanged -= listBox_SelectionChanged;

        this.listBox.Visibility = Windows.UI.Xaml.Visibility.Collapsed;

        if (String.IsNullOrWhiteSpace(this.textBox.Text) || this.ItemsSource == null || this.ItemsSource.Count == 0)
            return;

        var sel = (from d in this.ItemsSource where d.ToUpper().StartsWith(this.textBox.Text.ToUpper()) select d);

        if (sel != null && sel.Count() > 0)
        {
            this.listBox.ItemsSource = sel;
            this.listBox.Visibility = Windows.UI.Xaml.Visibility.Visible;

            this.listBox.SelectionChanged += listBox_SelectionChanged;
        }


    }

    void listBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        this.textBox.TextChanged -= textBox_TextChanged;

        this.textBox.Text = (string)this.listBox.SelectedValue;
        Text = this.textBox.Text;

        this.textBox.TextChanged += textBox_TextChanged;

        this.listBox.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
    }

}

}

[batuypn]

Thank you so much. I wrote your class, but i could not use it. I am getting an error :
Unable to cast object of type
'project1.Common.ObservableDictionary' to type 'System.Collections.ObjectModel.ObservableCollection`1[System.String]'.
at this part of your code:
get { return (ObservableCollection)GetValue(ItemsSourceProperty); }

When i created the object in my code, i wrote:
ObservableCollectionnames = new ObservableCollection();
names.Add("sample");
this.actbNames.ItemsSource = names;

Did i use it wrong when creating?
Thank you again.

[rafaqat-ali-confiz]

Yes There is a simple mistake in creating an object you have to mention its type like this
ObservableCollection names= new ObservableCollection();
names.Add("sample");
actbNames.ItemsSource = names;