Sort Out List Box by Modified Date.

Question

in below file is showing from a directroy file but not sort out I need sort out by modified date.

please help me about this... thanks.

private void Receipts_Load(object sender, EventArgs e)
{
try
{
string[] files = Directory.GetFiles(path);
foreach (string file in files)
{
show_receipts_listbox.Items.Add(Path.GetFileName(file));
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message, "Error");
}
}

Vulpes · Answer

In that case you'll need to sort them 'manually'. Try this: private void Receipts_Load(object sender EventArgs e) { try { DirectoryInfo di = new DirectoryInfo(path); FileInfo[] fia = di.GetFiles(); FileInfo t = null; for (int p = 0; p { for (int i = 0; i { if (fia[i].LastWriteTime > fia[i + 1].LastWriteTime) { t = fia[i + 1]; fia[i + 1] = fia[i]; fia[i] = t; } } } foreach (FileInfo fi in fia) { show_receipts_listbox.Items.Add(fi.Name); } } catch(Exception ex) { MessageBox.Show(ex.Message Error); } }

Amar Srivastava · Answer

In a very simple way you can try this one also.. like p rivate void Receipts_Load(object sender EventArgs e) { try { string[] files = Directory.GetFiles(path); foreach (string file in files) { show_receipts_listbox.Items.Add(Path.GetFileName(file)); } //Adding an extra line here. var sortedReceiptList = show_receipts_listbox.OrderBy(x=>x.ModifiedDate); } catch(Exception ex) { MessageBox.Show(ex.Message Error); } }

Vulpes · Answer

To use the OrderBy() extension method you need to include the following using directive near the top of your file: using System.Linq; You also need to be using .NET 3.5 (VS 2008) or later.

Feroz Khan · Answer

i show in list box .txt file through directory in below image i mark in yellow that is date .txt file i want to search with this date.. so please help me about this issue. thanks..

Feroz Khan · Answer

Ok boss sort out field is not working in .net 2.0 but must i need in 2.0 ok leave it about this now i want search field how can i search listbox value with textbox........

Vulpes · Answer

I've no idea what can be wrong with that (it works fine in .NET 4.0) but rather than waste time trying to find out I'd just use the code in my third post which sorts the array 'in place' and should certainly work in .NET 2.0.

Feroz Khan · Answer

Now see below error showing..

Vulpes · Answer

Yes but the OP wants the files sorting by date last modified. You can still do it with Array.Sort if you code a custom IComparer first. I think this should still work for .NET 2.0: using System.Collections.Generic; // ... class FileInfoComparer : IComparer { public int Compare(FileInfo fi1 FileInfo fi2) { if (fi1.LastWriteTime return -1; else if (fi1.LastWriteTime return 1; else return 0; } } // ... private void Receipts_Load(object sender EventArgs e) { try { DirectoryInfo di = new DirectoryInfo(path); FileInfo[] fia = di.GetFiles(); Array.Sort(fia new FileInfoComparer()); foreach (FileInfo fi in fia) { show_receipts_listbox.Items.Add(fi.Name); } } catch(Exception ex) { MessageBox.Show(ex.Message Error); } }

Jignesh Trivedi · Answer

Hi using Array.sort method you can sort the array... string[] files = Directory.GetFiles(path); Array.Sort(files); hope this will help you.

Feroz Khan · Answer

Please tell me any other procedure because i am using .Net 2.0

Feroz Khan · Answer

Please see showing below error orderBY not accepting..

Feroz Khan · Answer

in OrderBy showing error ...

Vulpes · Answer

Try this: private void Receipts_Load(object sender EventArgs e) { try { DirectoryInfo di = new DirectoryInfo(path); string[] files = di.GetFiles() .OrderBy(fi => fi.LastWriteTime) .Select(fi => fi.FullName) .ToArray(); foreach (string file in files) { show_receipts_listbox.Items.Add(Path.GetFileName(file)); } } catch(Exception ex) { MessageBox.Show(ex.Message Error); } }