void removeMemberItem_Click(object sender, EventArgs e)
{
if (tablesTree.SelectedNode != null && tablesTree.SelectedNode.Tag is MetaDataMember)
{
MetaDataMember member = tablesTree.SelectedNode.Tag as MetaDataMember;
currentTablesHeap.GetTable(member.TableType, false).RemoveMember(member);
tablesTree.SelectedNode.Remove();
}
}