Damn listview

Eric Hamilton

I got a code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Management;

namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
e.Node.Nodes.Clear();
string[] dir = Directory.GetDirectories(e.Node.FullPath, ("*"));
for (int i = 0; i < dir.Length; i++)
{
DirectoryInfo mappeninfo = new DirectoryInfo(dir[i]);
e.Node.Nodes.Add(mappeninfo.Name);
}
}
private void Form1_Load(object sender, EventArgs e)
{
string[] directories = Directory.GetLogicalDrives();
// hier word de directories geladen
foreach (string s in Directory.GetLogicalDrives())
{
treeView1.Nodes.Add(s);
}
}
private void listView1_SelectedIndexChanged(object sender, EventArgs e)
{
string sPath = ("*");
DirectoryInfo di = new DirectoryInfo(sPath);
FileInfo[] rgFiles = di.GetFiles("*");

}
}
}

but the listview wont show any files in any directory

6 Replies

Know the answer? Post it — somebody with the same question will find it here.

Nilanka Dharmadasa16y ago
Accepted answer
Hi Eric,

Change your code as follows.

        public Form1()
        {
            InitializeComponent();

            listView1.View = View.Details;
            listView1.Columns.Add("Name");
            listView1.Columns.Add("Size");
            listView1.Columns.Add("Date Modified");
        }

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            e.Node.Nodes.Clear();
            listView1.Items.Clear();
            string[] dir = Directory.GetDirectories(e.Node.FullPath, ("*"));
            for (int i = 0; i < dir.Length; i++)
            {
                DirectoryInfo mappeninfo = new DirectoryInfo(dir[i]);
                e.Node.Nodes.Add(mappeninfo.Name);
            }

            string[] files = Directory.GetFiles(e.Node.FullPath, ("*"));
            ListViewItem item;
            FileInfo fi;

            for (int i = 0; i < files.Length; i++)
            {
                item = new ListViewItem(Path.GetFileName(files[i]));
                fi = new FileInfo(files[i]);

                item.SubItems.Add(fi.Length.ToString());
                item.SubItems.Add(fi.LastWriteTime.ToString());
                listView1.Items.Add(item);

            }
        }
Eric Hamilton16y ago
thanks a milion
Eric Hamilton16y ago
You are the best it works as a charm now i get it what went wrong. Do you know how you can make collums in the listview so you see what the filename, file size and wich date the file has been changed.
Nilanka Dharmadasa16y ago
Hi Eric,

Change your code as follows.

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            e.Node.Nodes.Clear();

            listView1.Items.Clear();

            string[] dir = Directory.GetDirectories(e.Node.FullPath, ("*"));
            for (int i = 0; i < dir.Length; i++)
            {
                DirectoryInfo mappeninfo = new DirectoryInfo(dir[i]);
                e.Node.Nodes.Add(mappeninfo.Name);
            }

            string[] files = Directory.GetFiles(e.Node.FullPath, ("*"));
            for (int i = 0; i < files.Length; i++)
            {
                listView1.Items.Add(Path.GetFileName(files[i])) ;
            }
        }

And comment your listView1_SelectedIndexChanged method as follows. Because it is also not needed for your requirement.

        private void listView1_SelectedIndexChanged(object sender, EventArgs e)
        {
            //string sPath = ("*");
            //DirectoryInfo di = new DirectoryInfo(sPath);
            //FileInfo[] rgFiles = di.GetFiles("*");

        }

Now run your code and see. If you want to change it further, let me know.

I can help you.
Eric Hamilton16y ago
Im using listview to show the content of a directory. They say Listview is the easiest to use for it. And thanks for the fast reply
Nilanka Dharmadasa16y ago
Hi friend,

In your code, list view does not contain any item. So it does not show any item.

What is your requirement? What do you want to show in the list view?

If you can tell that, I can help you to change this code to match your need.