private void RemoveButton_Click(object sender, EventArgs e)
{
if (FileListBox.Items.Count > 0)
{
var newList = new List <string>();
for (var index = 0; index < FileListBox.Items.Count; index++)
{
if (!FileListBox.GetItemChecked(index))
{
newList.Add(FileListBox.Items[index].ToString());
}
}
FileListBox.Items.Clear();
foreach (var item in newList)
{
FileListBox.Items.Add(item);
}
if (FileListBox.Items.Count > 0)
{
SelectMode = !SelectMode;
}
else
{
SelectMode = true;
}
}
}