Downloaded from :

The xaml control code :

<Window x:Class="Lab_ListView.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:Lab_ListView"
        mc:Ignorable="d"
        Title="Video Game List" Height="450" Width="800">
    <Grid Margin="0,0,10,10">
        <Label Content="Game Name" HorizontalAlignment="Left" Margin="40,59,0,0" VerticalAlignment="Top"/>
        <TextBox x:Name="GameNameTextBox" HorizontalAlignment="Left" Height="23" Margin="121,62,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="366"/>
        <Button x:Name="AddBtn" Content="Add" HorizontalAlignment="Left" Margin="121,151,0,0" VerticalAlignment="Top" Width="75" Click="AddBtn_Click"/>
        <ListView x:Name="VideoGameListView" HorizontalAlignment="Left" Height="166" Margin="40,203,0,0" VerticalAlignment="Top" Width="447">
            <ListView.View>
                <GridView>
                    <GridViewColumn Header="Game Name" DisplayMemberBinding="{Binding GameName}"/>
                    <GridViewColumn Header="Rating" DisplayMemberBinding="{Binding Rating}"/>
                    <GridViewColumn Header="Price" DisplayMemberBinding="{Binding Price}"/>
                </GridView>
            </ListView.View>
        </ListView>
        <Label Content="Rating" HorizontalAlignment="Left" Margin="40,90,0,0" VerticalAlignment="Top"/>
        <Label Content="Price" HorizontalAlignment="Left" Margin="40,121,0,0" VerticalAlignment="Top"/>
        <TextBox x:Name="PriceTextBox" HorizontalAlignment="Left" Height="23" Margin="121,123,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="366"/>
        <TextBox x:Name="RatingTextBox" HorizontalAlignment="Left" Height="23" Margin="121,92,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="366"/>

    </Grid>
</Window>

CodePudding user response：

You have specified in your XAML that your columns bind to properties of the items named GameName, Rating and Price. When you add VideoGame objects to the list, those properties of those objects are displayed in those columns. If you simply add a string then there are no such properties, so those columns show nothing. If you bind your columns to specific properties then those properties have to exist in the items you add or there's nothing to display in those columns for those items.