i use this methode to search for every keyword in textbox1 ind have the result in the listbox2 . But the problem that the results are repeated . this code used in search button private void button1_Click( object sender, EventArgs e) { // the keyword in text box string [] pattern = textBox1.Text.Split( new [] { ' ' },StringSplitOptions.RemoveEmptyEntries); // list_temporare for items in listbox 1 List list_temporare = new List (); // listbox2 for show result listBox2.Items.Clear(); // add all items in listbox1 in list_temporare (Because linq and lambda does not support the items in the box list or that what I believe) foreach (DirectoryInfo dr in listBox1.Items) { list_temporare.Add(dr); } // search for every key word in pattern var liste_resultat = (from drc in list_temporare where pattern.All(s => drc.ToString().ToLower().Contains(s.ToLower())) select drc); // show result in listbox2 foreach (DirectoryInfo dr in liste_resultat) { listBox2.Items.Add(dr); } }

change this line foreach (DirectoryInfo dr in liste_resultat) to this line and run again foreach (DirectoryInfo dr in liste_resultat.distinct())

Answer

Why do I find the result repeats after the search?

Mohamed Moumni

578

i use this methode to search for every keyword in textbox1 ind have the result in the listbox2 . But the problem that the results are repeated .

this code used in search button

private void button1_Click(object sender, EventArgs e)
{
// the keyword in text box
string[] pattern = textBox1.Text.Split(new[] { ' ' },StringSplitOptions.RemoveEmptyEntries);
// list_temporare for items in listbox 1
List<DirectoryInfo> list_temporare = new List<DirectoryInfo>();
// listbox2 for show result
listBox2.Items.Clear();
// add all items in listbox1 in list_temporare (Because linq and lambda does not support the items in the box list or that what I believe)
foreach (DirectoryInfo dr in listBox1.Items)
{
list_temporare.Add(dr);
}
// search for every key word in pattern
var liste_resultat = (from drc in list_temporare
where pattern.All(s => drc.ToString().ToLower().Contains(s.ToLower()))
select drc);
// show result in listbox2
foreach (DirectoryInfo dr in liste_resultat)
{
listBox2.Items.Add(dr);
}
}