How to use LongBindingPath WPF in VB.NET

This article will describe for you how to use LongBindingPath using WPF. This is small example but very useful in WPF.
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This article will describe for you how to use LongBindingPath using WPF. This is small example but very useful in WPF. 
 
First of all make a new WPF application and add a new page using "Add New Item" then drag and drop some controls onto page. I have added one list box with a few listboxitems and I have added a textbox and lables. When we select any item of listbox the selected value will show in label.
 
Content="{Binding ElementName=TestPage, Path=Content.Children[1].SelectedItem.Content}">
 
Here is my full .xaml code
 
<Page x:Class="WPFBinding.Page1"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
      mc:Ignorable="d" FontSize="14pt" Name="TestPage">
    <StackPanel>
        <TextBlock Name="textBlock1" Text="First element in stack panel" HorizontalAlignment="Center" />
        <ListBox Name="listBox1" HorizontalAlignment="Center" Margin="24" Width="208" Height="132">
            <ListBoxItem Content="Raj Kumar Beniwal" />
            <ListBoxItem Content="Jeniffer Tapagia jenny" />
            <ListBoxItem Content="Kishan Kant Kahu" />
            <ListBoxItem Content="Sama Sikandar Jetli" />
            <ListBoxItem Content="Jeenat Chatterjee" />
        </ListBox>
        <TextBlock  Name="textBlock2" HorizontalAlignment="Center">
            <Label Content="Number of character in fourth list box item = "></Label>
            <Label Content="{Binding ElementName=TestPage, Path=Content.Children[1].Items[3].Content.Length}" Name="label1" />
            <LineBreak></LineBreak>
            <Label Content="Number of character in selected item = "></Label>
            <Label Content="{Binding ElementName=TestPage, Path=Content.Children[1].SelectedItem.Content.Length}"></Label>
            <LineBreak></LineBreak>
            <Label Content="Selected Item Text = "></Label>
            <Label Content="{Binding ElementName=TestPage, Path=Content.Children[1].SelectedItem.Content}"></Label>
        </TextBlock>
    </StackPanel>
</Page>

 
So when you run the application.
 
Image1.jpg
 
 
Image 1.

 
When you select and listitem then result should be like this.
 
<Label Content="Number of character in selected item = "></Label>
<Label Content="{Binding ElementName=TestPage, Path=Content.Children[1].SelectedItem.Content.Length}"></Label>
            <LineBreak></LineBreak>
 <Label Content="Selected Item Text = "></Label>
<Label Content="{Binding ElementName=TestPage, Path=Content.Children[1].SelectedItem.Content}"></Label>

 
Image2.jpg
 
Image 2.
 
Let's discuss one more important thing, how to get day of the week in WPF.
 
Add this reference.
 
xmlns:mscorlib="clr-namespace:System.Globalization;assembly=mscorlib"

 
<ListBox Height="156" HorizontalAlignment="Center" Margin="76,55,0,0"
                 Name="listBox1" VerticalAlignment="Top"
                 Width="120"
                 ItemsSource="{Binding Source={x:Static mscorlib:DateTimeFormatInfo.CurrentInfo}, Path=DayNames, Mode=OneTime}" />
        <TextBlock Height="23" HorizontalAlignment="Center"
                   Margin="128,228,52,0" Name="textBlock1"
                   Text="{Binding ElementName=listBox1, Path=SelectedItem, Mode=OneWay}" VerticalAlignment="Top" Width="120" />

 
Result should be like this.
 
Image3.jpg
 
 
Image 3.
 
When you select any day then
 
Image4.jpg
 
Image 4.

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