Navigation buttons using a listView. (Prev and Next)

Question

Hi
I populate my listview from a folder on my c drive; I need to add 2 buttons. A previous and next to navigate up or down. Can anybody give me some ideas on how the Prev and Next code will look like? I'm still a beginner so really would appreciate any help. I'm using Windows forms C#.
Thanks
Melger

Shahan Ayyub · Answer

Hi! Please check this I tested by the extension of your code it worked for me: this is the code under partial Class Form1: Form TextBox txtPicSelected = new TextBox(); //Your Textbox I didn't create it. string Loc = @C:\Users\Shahan\Pictures\; //Global Variable public Form1() { InitializeComponent(); PopulateListView(); listView1.MultiSelect = false; listView1.Select(); listView1.Items[0].Selected = true; } private void PopulateListView() { string SelectView = View. + txtPicSelected.Text; listView1.View = View.List; System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo(Loc); System.IO.FileInfo[] files = dirInfo.GetFiles(*.jpg); if (files != null) { foreach (System.IO.FileInfo file in files) { ListViewItem item = new ListViewItem(file.Name); item.SubItems.Add(file.FullName); listView1.Items.Add(item); txtPicSelected.Text = 0; } } } private void listView1_MouseDown(object sender MouseEventArgs e) { //lblNone.Visible = false; ListViewItem selection = listView1.GetItemAt(e.X e.Y); if (selection != null) { string name = selection.ToString().Remove(0 15).TrimEnd('}'); txtPicSelected.Text = name.ToString(); if (selection != null) { pbThump.Image = System.Drawing.Image.FromFile(selection.SubItems[1].Text); } } } private void Nextbtn_Click(object sender EventArgs e) { int index = listView1.SelectedItems[0].Index; if (index { listView1.Select(); listView1.Items[index + 1].Selected = true; btnPrev.Enabled = true; if((index = listView1.SelectedItems[0].Index) == listView1.Items.Count-1) Nextbtn.Enabled = false; } else Nextbtn.Enabled = false; } private void btnPrev_Click(object sender EventArgs e) { int index = listView1.SelectedItems[0].Index; if (index > 0) { listView1.Select(); listView1.Items[index - 1].Selected = true; Nextbtn.Enabled = true; if ((index = listView1.SelectedItems[0].Index) == 0) btnPrev.Enabled = false; } else btnPrev.Enabled = false; } private void listView1_SelectedIndexChanged(object sender EventArgs e) { if (listView1.SelectedItems.Count !=0) pbThump.Image = System.Drawing.Image.FromFile(Loc + listView1.SelectedItems[0].SubItems[0].Text); }

Melger · Answer

Cool… you're a genius!!! It's perfect!! Thanks for all your help Shahan!!!

Shahan Ayyub · Answer

Glad to see that your problem has been solved. :)

Melger · Answer

Hi Does anybody got some more advice for me? Pleaaaaaaaaaaaaaaaaaase Melger

Melger · Answer

Hi Shahan Thanks for the reply but unfortunately it does't work. If i slick on next it highlite the next in the list but not selecting it. prev highlite all in list backwards. Hey... could be me doing something stupid! Maybe I must not use the mouse down event!? Any ideas for me? I populate my list box like: private void PopulateListView() { string Location = @..\..\Photos\ ; string SelectView = View. + txtPicSelected.Text; listView1.View = View.List; System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo(Location); System.IO.FileInfo[] files = dirInfo.GetFiles( *.jpg ); if (files != null ) { foreach ( System.IO.FileInfo file in files ) { ListViewItem item = new ListViewItem(file.Name); item.SubItems.Add(file.FullName); listView1.Items.Add(item); txtPicSelected.Text = 0 ; } } } Then on Mouse down event I display the selected picture in a Picturebox like: private void listView1_MouseDown( object sender MouseEventArgs e) { lblNone.Visible = false ; ListViewItem selection = listView1.GetItemAt(e.X e.Y); if (selection != null ) { string name = selection.ToString().Remove( 0  15 ). TrimEnd( '}' ); txtPicSelected.Text = name.ToString(); if (selection != null ) { pbThump.Image = System.Drawing.Image.FromFile( selection.SubItems[ 1 ].Text); } } }

Shahan Ayyub · Answer

Hi! This is a simple demo that might help you or give you a start: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace NaviagtionListView { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender EventArgs e) { string[] str= System.IO.Directory.GetDirectories(@C:\); ListViewItem[] itemsarray = new ListViewItem[str.Length]; int i = 0; foreach (string s in str) { itemsarray[i] = new ListViewItem(); itemsarray[i].Text = s; i++; } listView1.Items.AddRange(itemsarray); listView1.Items[0].Selected = true; btnPrev.Enabled = false; } private void btnPrev_Click(object sender EventArgs e) { int index = listView1.SelectedItems[0].Index; if (index > 0) { listView1.Items[index-1].Selected = true; listView1.Items[index - 1].Focused = true; listView1.Select(); Nextbtn.Enabled = true; if (listView1.Items[listView1.Items.Count - 1].Selected == true) btnPrev.Enabled = false; } else { listView1.Items[0].Selected = true; listView1.Select(); } } private void Nextbtn_Click(object sender EventArgs e) { int index = listView1.SelectedItems[0].Index; if (index { listView1.Items[index + 1].Selected = true; btnPrev.Enabled = true; listView1.Select(); if (listView1.Items[listView1.Items.Count - 1].Selected == true) Nextbtn.Enabled = false; } else { listView1.Items[listView1.Items.Count - 1].Selected = true; listView1.Select(); } } } }