public void ClearFilenames()
{
var array = new string[_data.Keys.Count];
int idx = 0;
foreach (string item in _data.Keys)
{
array[idx++] = item;
}
foreach (string element in array)
{
var key = element;
if (key.StartsWith("SETUP:FILENAMES"))
{
_data.Remove(key);
}
}
}