How to save ListView selected item

Question

I'm trying to save a ListView selected item and I don't know why I'm getting this error:

"Cannot implicitly convert type 'int' to 'System.Windows.Forms.ListView.SelectedListViewItemCollection'"

I tried this code on the save button:

Settings.Default["SelectedDevice"] = sourceList.SelectedItems; //Works fine

on Form_Load I tried this:

sourceList.SelectedItems = (int)Settings.Default["SelectedDevice"]; //error

Why do you try to cast the SelectedListViewItemCollection to int? — MS_SP, Aug 21 '13 at 10:44
this isn't working neither: sourceList.SelectedItems = Settings.Default["SelectedItem"]; — ORION, Aug 21 '13 at 10:49
what are you trying to do? save a default value to be selected when the form is loaded? — iabbott, Aug 21 '13 at 10:54
you save it as "SelectedItem" but again read it as "SelectedDevice"! typo? — Damith, Aug 21 '13 at 10:55

score 1 · Accepted Answer · answered Aug 21 '13 at 10:56

I've made a small application where I read the selecteditem from the settings. The code to select the Item in the OnLoad-Event is:

 private void OnLoad(object sender, EventArgs eventArgs)
 {
    int selectedItem = Properties.Settings.Default.SelectedItem;
    if (selectedItem != -1)
    {
       this.listView1.Items[selectedItem].Selected = true;
    }
  }

The Default-Value of my Settings is -1

James · Answer 2 · 2013-08-21T10:56:48.993

0

First of all SelectedItems is a readonly property, it can't be set. Secondly it's a SelectedListViewItemCollection not an int.

If you are trying to store the selected indices of items in your list you would need to do something along the lines of:

// store CSV list of indices
Settings.Default["SelectedItems"] = String.Join(",", listView.SelectedIndices.Select(x => x));
...
// load selected indices
var selectedIndices = ((string)Settings.Default["SelectedItems]).Split(',');
foreach (var index in selectedIndices)
{
    listView.Items[Int32.Parse(index)].Selected = true;
}

edited Aug 21 '13 at 10:56

answered Aug 21 '13 at 10:49

James

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So no way to save it ? – ORION Aug 21 '13 at 10:50
I tried this and it not working : sourceList.SelectedItems = Settings.Default["SelectedDevice"]; – ORION Aug 21 '13 at 10:53
@ORION Like I said that codes never going to work because `SelectedItems` is **read only**. See my update for a more reliable solution. – James Aug 21 '13 at 11:02

score 0 · Answer 3 · edited May 23 '17 at 11:56

0

sourceList.SelectedItems = (int)Settings.Default["SelectedDevice"]; //error

There is your error.

Please refer to the following. How to select an item in a ListView programmatically?

edited May 23 '17 at 11:56

Community

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answered Aug 21 '13 at 10:51

George87

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How to save ListView selected item

3 Answers3