'WPF bind list box Selected item into textbox

I'm trying to put any selected item's name in my list box in the textbox next to it. But I've got trouble doing so.

listbox image

Here's a little bit of my code:

    <DockPanel Margin="10">
        <StackPanel Margin="5" DockPanel.Dock="Left">
            <ListBox   Name="lbNames" DisplayMemberPath="Name" IsSynchronizedWithCurrentItem="True"/>
        </StackPanel>
        <StackPanel Margin="5" DockPanel.Dock="Right">
            <TextBox Name="txtName" Width="auto" Text="{Binding ElementName=lbNames,Path=SelectedItem}"/>
            <WrapPanel Margin="0,5" Orientation="Horizontal">
                <Button Margin="2,0" Name="btnAdd" Click="btnAdd_Click" Content="Add"/>
                <Button Margin="2,0"  Name="btnEdit" Click="btnChange_Click" Content="Edit"/>
                <Button Margin="2,0"  Name="btnDelete" Click="btnDelete_Click" Content="Delete"/>
            </WrapPanel>
        </StackPanel>
    </DockPanel>
c++sharpwpfdata-binding


Solution 1:[1]

Because you are showing Text="{Binding ElementName=lbNames,Path=SelectedItem}"and your selected item is an user object. Instead of this you can use something like that. First add SelectedValuePath="Name" into your listbox. Then use Text="{Binding ElementName=lbNames,Path=SelectedValue}"

 <DockPanel Margin="10">
    <StackPanel Margin="5" DockPanel.Dock="Left">
        <ListBox   Name="lbNames" DisplayMemberPath="Name" SelectedValuePath="Name" IsSynchronizedWithCurrentItem="True"/>
    </StackPanel>
    <StackPanel Margin="5" DockPanel.Dock="Right">
        <TextBox Name="txtName" Width="auto" Text="{Binding ElementName=lbNames,Path=SelectedValue}"/>
        <WrapPanel Margin="0,5" Orientation="Horizontal">
            <Button Margin="2,0" Name="btnAdd" Click="btnAdd_Click" Content="Add"/>
            <Button Margin="2,0"  Name="btnEdit" Click="btnChange_Click" Content="Edit"/>
            <Button Margin="2,0"  Name="btnDelete" Click="btnDelete_Click" Content="Delete"/>
        </WrapPanel>
    </StackPanel>
</DockPanel>

Or simply you can use it too Text="{Binding ElementName=lbNames,Path=SelectedItem.Name}"

Sources

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Source: Stack Overflow

Solution Source
Solution 1

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