static void CheckedListBox_OnSelectedIndexChanged(object sender, EventArgs e)
{
System.Windows.Forms.CheckedListBox lCheck = (System.Windows.Forms.CheckedListBox)sender;
if (lCheck.SelectedItem.ToString().Equals("Selecionar Todos") && lCheck.GetItemChecked(0))
{
for (int i = 0; i < ((System.Windows.Forms.CheckedListBox)sender).Items.Count; i++)
{
lCheck.SetItemChecked(i, true);
if (!lCheck.SelectedItem.ToString().Equals("Selecionar Todos"))
{
gListaClienteSelecionadosFiltro.Add((int)(lCheck.Items[i]));
}
}
}
else if (lCheck.SelectedItem.ToString().Equals("Selecionar Todos") && !lCheck.GetItemChecked(0))
{
for (int i = 0; i < ((System.Windows.Forms.CheckedListBox)sender).Items.Count; i++)
{
lCheck.SetItemChecked(i, false);
if (!lCheck.SelectedItem.ToString().Equals("Selecionar Todos"))
{
gListaClienteSelecionadosFiltro.Remove((int)(lCheck.Items[i]));
}
}
}
else
{
if (!lCheck.SelectedItem.ToString().Equals("Selecionar Todos"))
{
int lConta = Convert.ToInt32(lCheck.SelectedItem);
if (gListaClienteSelecionadosFiltro.Contains(lConta))
{
gListaClienteSelecionadosFiltro.Remove(lConta);
}
else
{
gListaClienteSelecionadosFiltro.Add(lConta);
}
}
}
}
/// <summary>
/// Finds all the items in a <see cref="System.Windows.Forms.CheckedListBox"/> that are checked and have non-null values
/// </summary>
/// <param name="checkedListBox">A <see cref="System.Windows.Forms.CheckedListBox"/> to operate on. </param>
/// <returns>All the items in a <see cref="System.Windows.Forms.CheckedListBox"/> that are checked and have non-null values.</returns>
public static IEnumerable <string> GetNonNullCheckedItemValues(this System.Windows.Forms.CheckedListBox checkedListBox)
{
for (var id = 0; id <= (checkedListBox.Items.Count - 1); id++)
{
if (!checkedListBox.GetItemChecked(id))
{
continue;
}
var selectedItemString = checkedListBox.Items[id]?.ToString();
if (string.IsNullOrWhiteSpace(selectedItemString))
{
continue;
}
yield return(selectedItemString);
}
}
