private void DialogOKButton_Click(object sender, EventArgs e)
{
for (int i = 0; i < ColumnListBox.Items.Count; i++)
{
ColumnDefinition colDef = (ColumnDefinition)ColumnListBox.Items[i];
colDef.Visble = ColumnListBox.GetItemChecked(i);
colDef.Order = i;
}
columnDefList.Sort();
}
