CODEWITHSUNDEEP
c#linqlistviewsearch
rbelliv
rbelliv

Reputation: 127

Search/Query a ListView and print results to new ListView

I want to search an existing ListView that has FOUR columns and print the results of the search in an entirely new ListView. Here is what I have thus far:

private void qryBtn_Click(object sender, EventArgs e)
{
    var results = listResx.Items.Cast<ListViewItem>()
      .Where(x => x.Text.Contains(textQuery.Text));

    foreach (var d in results)
    {
        listQuery.Items.Add(d.ToString());
    }
}

Upvotes: 0

Views: 1639

Answers (1)

Mike Dinescu
Mike Dinescu

Reputation: 55750

If you're trying to search in all four columns of each item than something like this should to the trick:

var results = listResx.Items.Cast<ListViewItem>()
      .Where(x => x.Subitems.Cast<ListViewItem.ListViewSubItem>()
                  .Any(si => si.Text.Contains(textQuery.Text)
            );

results would then contain ListViewItems where the query text matched any of the sub-items. And as far as I recall, the sub-items's collection includes the item's text as well.

To insert those as full list items in the other list view you will have to create a new ListViewItem for each item in the results enumeration because you can't insert the same ListViewItem in two different list views at the same time:

foreach (var d in results)
{
    ListViewItem lvi = new ListViewItem();
    foreach(ListViewItem.ListViewSubItem si in d.SubItems)
    {
        lvi.SubItems.Add(si.Text);
    }
    listQuery.Items.Add(lvi);
}

Upvotes: 1

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