What is the type of every item in CheckedListBox.Items?
I need to know what is the type of every element in CheckedListBox.Items
? I开发者_StackOverflow社区s it ListViewItem
, Object
or what?
I also want to know how can I bind a DataTable
to a CheckedListBox
and set every items ID and text in windows forms?
The type depends on the objects that you use to fill the checked list box. You can use a DataTable
by using the following code:
var table = new DataTable();
table.Columns.Add("ID");
table.Columns.Add("NAME");
table.Rows.Add("1", "John Doe");
table.Rows.Add("2", "Jane Doe");
this.checkedListBox1.DataSource = table;
this.checkedListBox1.ValueMember = "ID";
this.checkedListBox1.DisplayMember = "NAME";
In this case since you will be filling the checked list box using a DataTable
doing this.checkedListBox1.CheckedItems
after checking one or more items will output an ObjectCollection
where each item in the collection is a DataRowView
instance.
To obtain the checked items you could do:
var checkedIds = new List<string>();
foreach (var item in this.checkedListBox1.CheckedItems)
{
var dataRowView = (DataRowView)item;
checkedIds.Add((string)dataRowView["ID"]);
}
On a side note, you should really improve your acceptance rate.
The accepted answer didn't work for me; the state never changed. This is the code that I came up with that does work.
Private Sub SetCLBXState(ByVal DesiredState As Boolean)
For ItemIndex As Integer = 0 To CLBXExclude.Items.Count - 1
CLBXExclude.SetItemChecked(ItemIndex, DesiredState)
Next
End Sub
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