Get single listView SelectedItem

Question

I have the MultiSelect property of the listView set to false and I m trying to get a single listViewItem  But the available property is SelectedItems  I ve been using the following code     foreach  ListViewItem item in listView1 SelectedItems          do something with item text or whatever     Because I know there will only be one item selected  What is the correct way of doing this

User · Answer

If its just a natty little app with one or two ListViews I normally just create a little helper property:

private ListViewItem SelectedItem { get { return (listView1.SelectedItems.Count > 0 ? listView1.SelectedItems[0] : null); } }

If I have loads, then move it out to a helper class:

internal static class ListViewEx
{
    internal static ListViewItem GetSelectedItem(this ListView listView1)
    {
        return (listView1.SelectedItems.Count > 0 ? listView1.SelectedItems[0] : null);
    }
}

so:

ListViewItem item = lstFixtures.GetSelectedItem();

The ListView interface is a bit rubbish so I normally find the helper class grows quite quickly.

User · Answer

Sometimes using only the line below throws me an Exception   String text   listView1 SelectedItems 0  Text     so I use this code below   private void listView1 SelectedIndexChanged object sender  EventArgs e          if  listView1 SelectedIndices Count  lt   0                  return              int intselectedindex   listView1 SelectedIndices 0        if  intselectedindex  gt   0                 String text   listView1 Items intselectedindex  Text             do something           MessageBox Show listView1 Items intselectedindex  Text

User · Answer

If you want to select single listview item no mouse click over it try this   private void timeTable listView MouseUp object sender  MouseEventArgs e                        Point mousePos   timeTable listView PointToClient Control MousePosition               ListViewHitTestInfo hitTest   timeTable listView HitTest mousePos                  try                           int columnIndex   hitTest Item SubItems IndexOf hitTest SubItem               edit textBox Text   timeTable listView SelectedItems 0  SubItems columnIndex  Text                            catch Exception

User · Answer

This works for single as well as multi selection list   foreach  ListViewItem item in listView1 SelectedItems        int index   ListViewItem Index        index is now zero based index of selected item

User · Answer

For a shopping cart situation here s what I recommend  I m gonna break it down into it s simplest form   Assuming we start with this a list view with 2 colums  2 buttons  and a label     First things first  removing the items  to do that we ll enter our remove button   private void button2 Click object sender  EventArgs e        listView1 Items Remove listView1 SelectedItems 0        label1 Text   updateCartTotal   ToString        Now the second line is updating our labels total using the next function i ll post to addup all the total of column 2 in the listview   private decimal updateCartTotal         decimal runningTotal   0      foreach ListViewItem l in listView1 Items                runningTotal    Convert ToDecimal l SubItems 1  Text             return runningTotal      You don t have to use decimal like I did  you can use float or int if you don t have decimals  So let s break it down  We use a for loop to total all the items in the column 2 SubItems 1  Text   Add that to a decimal we declared prior to the foreach loop to keep a total  If you want to do tax you can do something like   return runningTotal   1 15    or whatever your tax rate is   Long and short of it  using this function you can retotal your listview by just calling the function  You can change the labels text like I demo d prior if that s what you re after

User · Answer

I do this like that   if  listView1 SelectedItems Count  gt  0         var item   listView1 SelectedItems 0          rest of your logic

User · Answer

None of the answers above  at least to me  show how to actually handle determining whether you have 1 item or multiple  and how to actually get the values out of your items in a generic way that doesn t depend on there actually only being one item  or multiple  so I m throwing my hat in the ring   This is quite easily and generically done by checking your count to see that you have at least one item  then doing a foreach loop on the  SelectedItems  casting each item as a DataRowView   if  listView1 SelectedItems Count  gt  0         foreach  DataRowView drv in listView1 SelectedItems                  string firstColumn   drv Row 0     null   drv Row 0  ToString     String Empty           string secondColumn   drv Row 1     null   drv Row 1  ToString     String Empty                  do something with these values before they are replaced             by the next run of the loop that will get the next row            This will work  whether you have 1 item or many   It s funny that MSDN says to use ListView SelectedListViewItemCollection to capture listView1 SelectedItems and iterate through that  but I found that this gave an error in my WPF app   The type name  SelectedListViewItemCollection  does not exist in type  ListView

User · Answer

Usually SelectedItems returns either a collection  an array or an IQueryable   Either way you can access items via the index as with an array   String text   listView1 SelectedItems 0  Text     By the way  you can save an item you want to look at into a variable  and check its structure in the locals after setting a breakpoint

User · Answer

foreach  ListViewItem itemRow in taskShowListView Items        if  itemRow Items 0  Checked    true                int taskId   Convert ToInt32 itemRow SubItems 0  Text            string taskDate   itemRow SubItems 1  ToString            string taskDescription   itemRow SubItems 2  ToString

[c#] Get single listView SelectedItem

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