WPF AutoCompleteTextBox in VB.NET

In this article I am going to show about AutoCompleteTextBox in WPF.
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 In this article I am going to show AutoCompleteTextBox in WPF. AutoCompleteTextBox mean when we type something to search in a textbox to get a small list of valid search results that match the search string entered so far. In this article I am using Linq to Sql also. I have saved my DataBaseinside DATA folder. To run the application just add this database and change connection string from setting inside properties folder.

See in this image.

WTImg1.JPG 

Image 1.

Just change here DataSource according to you server name.

This is my DataTable from which records are coming.

WTImg2.JPG 

Image 2.

This is my XAML code.

<Window x:Class="AutoCompleteTextBoxInWPF.MainWindow"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        Title="MainWindow" Height="250" Width="350">

    <Grid Background="AliceBlue">

        <Grid.RowDefinitions>

            <RowDefinition Height="40" />

            <RowDefinition Height="203" />

        </Grid.RowDefinitions>

        <TextBlock Text="Search :" HorizontalAlignment="Left"

                   VerticalAlignment="Bottom" Width="70" Height="15.96" Margin="31,0,0,4" />

        <TextBox HorizontalAlignment="Right" VerticalAlignment="Bottom"

                 Height="25" Width="160" Margin="0,0,10,0" x:Name="txtName" TextWrapping="NoWrap"SelectionChanged="txtName_SelectionChanged" />

        <ListBox x:Name="listName" SelectionChanged="listName_SelectionChanged"

            Background="LightCyan" Grid.Row="1" Visibility="Collapsed"

                 HorizontalAlignment="Right" VerticalAlignment="Top" Width="160" Margin="0,0,10,0"/>

    </Grid>

</Window>

 

When we run the application and want to search name which start with "R".

WTImg3.JPG
  

Image 3.

If we type character "E", then the textbox will show all names starting with this character.

WTImg4.JPG 

Image 4.

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