How to save file name in listbox ?

Question

1.00/5 (1 vote)

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My load button is in the WPF main window and my listbox is in the user control so now what I want to do is that the name of the file that I load with the load button should come inside the listbox in the user control.

The problem with this code is that when the user control is opened by clicking the UserControl object_placement button and then loading the file by clicking the Load button, the file name is not added to the listbox.

And if the object is loaded with the Direct Load button, the name is added to the listbox

Both the Load button and the Object_Placement button are in the WPF main window

What I have tried:

C#

private void Object_placement_Click(object sender, RoutedEventArgs e)
{
   settingpanel.Children.Clear();
   UserControl1 newFormControl = new UserControl1();
   settingpanel.Children.Add(newFormControl);
}

C#

private void loadbtn_Click(object sender, RoutedEventArgs e)
{
   Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
   dlg.DefaultExt = ".swl";
   dlg.Filter = "SWL files (*.swl)|*.swl";
   Nullable<bool> result = dlg.ShowDialog();
   if (result == true)
   {
      string swlFilePath = dlg.FileName;
      string swlFileName = Path.GetFileNameWithoutExtension(swlFilePath);
      string swlZipFilePath = Path.Combine(Path.GetTempPath(), swlFileName + ".zip");

      if (File.Exists(swlZipFilePath))
      {
         File.Delete(swlZipFilePath);
      }

      // Copy the selected file to the new .zip file
      File.Copy(dlg.FileName, swlZipFilePath);

      // Extract the .zip file to a temporary directory
      string extractDirectory = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName());
      ZipFile.ExtractToDirectory(swlZipFilePath, extractDirectory);
      string Stlfilpath = Path.Combine(extractDirectory, swlFileName+".stl");


       // Add the object name to the existing list
       string stlFileName = Path.GetFileNameWithoutExtension(Stlfilpath);
       myUserControl.objectListBox.Items.Add(stlFileName);

	 }
}

Posted 13-Apr-23 1:13am

Ridhdhi Vaghani

Updated 13-Apr-23 7:31am

PIEBALDconsult

v3

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Comments

Richard MacCutchan 13-Apr-23 7:22am

And? What happens when you run the code?

Ridhdhi Vaghani 13-Apr-23 7:26am

If the user control is opened by clicking the Object_Placement button and then loading the file by clicking the Load button, the file name is not added to the listbox. And if the object is loaded with the Direct Load button, the name is added to the listbox

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Graeme_Grant · Answer 1 · 2023-04-13T01:33:00

Here is the simplest example that I can create....

1. Create new WPF project
2. Add UserControl1 UserControl
3. USe the following code:

XAML

XML

<UserControl x:Class="WpfUserControlBinding.UserControl1"
             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" 
             xmlns:local="clr-namespace:WpfUserControlBinding"
             mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800">
    <ListBox ItemsSource="{Binding FileNames}" />
</UserControl>

Code-Behind

C#

public partial class UserControl1 : UserControl
{
    public UserControl1()
    {
        InitializeComponent();
        DataContext = this;
    }

    public ObservableCollection<string> FileNames { get; set; } = new();
}

4. Update the MainWindow with the following:

XAML

XML

<Window x:Class="WpfUserControlBinding.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:WpfUserControlBinding"
        mc:Ignorable="d" Title="MainWindow" Height="450" Width="800">
    <local:UserControl1 x:Name="MyUserControl"/>
</Window>