listbox

mohan

hi everyone, how can I know whether an item is selected or not in listbox? if any of the item selected, I want to do 'x' thing if not any of the item selected, I want to do 'y' thing

4 Replies

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Vimal Kandasamy17y ago

Accepted answer

Mohan, to check whether any of the item is selected or not in list box,Take look at this code

            if (listBox1.SelectedIndex != -1)

                  // do X thing

            else

                // do y thing

usually Selectedindex will be -1 if nothing selected.and it will return value from 0 to n-1 if any of the item is selected.and also you can get the selected item directly using listbox1.selectedItem.

mohan17y ago
hi samy, this above code of yours is better than mine..... thanks once again....
mohan17y ago
HI SAMY, thanks for ur kind reply.... what I actually needed is any of the item(say 0....N-1) is selected or not so in that case I cant use above code..... so I tried another way to do it..... and I have pasted the same so have a look at it.... int flag2=0; for (int j = 0; j < listBox3.Items.Count; j++) { if (listBox3.GetSelected(j) == true) { flag2 = 1; } } if(flag==1) { do 'x' thing } else do 'y' thing

Vimal Kandasamy17y ago

Mohan,you can check it in selectedindexchanged event of listbox.To check whether a particular item is selected or not you can use SelectedIndex or SelectedItem property like below.

 private void listBox1_SelectedIndexChanged(object sender, EventArgs e)


             if( listBox1.SelectedIndex ==0)

                      //x thing

            else

                     //y thing