how to know if an item in the Listview is selected

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.NET3.0

hi all ,
if an item in the listview is seleced then to know if any item is selected ..
I tried using listview1.SelectedItems.Count and listview1.SelectedIndices.Count but everytime it is giving count to 0 after selecting an item ...

thnx ,

Posted 17-Nov-11 19:20pm

iampradeepsharma

Updated 21-Oct-19 9:54am

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4 solutions

Solution 4

// Loop through all items the ListBox.
   for (int x = 0; x < listBox1.Items.Count; x++)
   {
      // Determine if the item is selected.
      if(listBox1.GetSelected(x) == true)
         // Deselect all items that are selected.
         listBox1.SetSelected(x,false);      
      else
         // Select all items that are not selected.
         listBox1.SetSelected(x,true);
   }

Posted 21-Oct-19 9:54am

YOUSEF ZAREIE

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Kats2512 22-Oct-19 2:32am

an unexplained code dump to such an OLD POST isn't going to help much.

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BillWoodruff · Accepted Answer · 2011-11-18T01:28:00

Assume the ListBox selection mode is MultiSimple or MultiExtended: otherwise, of course, this makes no sense :)

Define a new SelectedObjectCollection, then initialize it in your Form Load Event:

C#

private ListBox.SelectedObjectCollection ListBoxSelections;

private void Form1_Load(object sender, EventArgs e)
{
    // initialize it here because prior to Form Load
    // a reference to the instance of listBox1 does
    // not exist to pass as a parameter

    // why initialize it ?
    // so we don't have to check if it's == null
    // when no items are selected and we want to
    // do something like access the 'Count property
    ListBoxSelections = new ListBox.SelectedObjectCollection(listBox1);
}

Then, 'wire-up' the SelectedIndexChanged Event to your ListBox:

C#

private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    ListBoxSelections = listBox1.SelectedItems;
}

And now any time you need to do whatever with the selected items in the ListBox, you can just use 'ListBoxSelections: if its 'Count property == #0, you know there are no current items selected.

erogaki · Accepted Answer · 2011-11-17T21:38:00

protected void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
foreach (ListItem li in ListBox1.Items)
{
if (li.Selected)
{
Label1.Text = li.Text.ToString();
}
}
}

label1 will display the selected item

prot0col · Accepted Answer · 2011-11-17T19:49:00

Solution 1

You can do something like this:

C#

foreach listview itm yourListView.Items)
{
   if(itm.selected)
   {
    Add in a string, its id or name or whatever
   }
}

Posted 17-Nov-11 19:49pm

prot0col

Updated 17-Nov-11 19:50pm

v2

Comments

iampradeepsharma 18-Nov-11 2:05am

Thanks for answering but there is no such property like selected on the item of the listview ...

[no name] 18-Nov-11 2:15am

are you doing the same with javascript?Is should work in javascript, if you are doing this in c# then do something like this :
String strItem;
foreach(Object selecteditem in listBox1.SelectedItems)
{
strItem = selecteditem as String;
System.Diagnostics.Debug.WriteLine(strItem);
}

how to know if an item in the Listview is selected

4 solutions

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