listview add files with icons?

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C#

C#4.0

Hello

I am adding files to listview from openfiledialog, and I want to add them with icons for different files , perhaps it reads the file extension I am adding, and I have this code.

ImageList imageList1 = new ImageList();
System.IO.DirectoryInfo document = new System.IO.DirectoryInfo(openFileDialog2.FileName);
ListViewItem item;
listOfLoadedFiles.BeginUpdate();
foreach (FileInfo file in document .GetFiles())
{    
    Icon iconForFile = SystemIcons.WinLogo;
    item = new ListViewItem(file.Name, 1);
    iconForFile = Icon.ExtractAssociatedIcon(file.FullName);    
    if (!imageList1.Images.ContainsKey(file.Extension)){        
        iconForFile = System.Drawing.Icon.ExtractAssociatedIcon(file.FullName);
        imageList1.Images.Add(file.Extension, iconForFile);
    }
    item.ImageKey = file.Extension;
    listOfLoadedFiles.Items.Add(item);
}
listOfLoadedFiles.EndUpdate();

Put I get an error on the line.

foreach (FileInfo file in dir.GetFiles())

It says The directory name is invalid.