public void RefreshSelectedSQLItemSchema(TreeView treeView)
{
SQLTreeItem item = ((SQLTreeItem)treeView.SelectedItem);
item.Items.Clear();
List <string> columnSchemas = _SQLHandler.GetSQlSchemaFromSQLItem(item, ConnectionStr);
foreach (string colname in columnSchemas)
{
item.Items.Add(new SQLTreeItem()
{
Header = colname,
ItemType = SQLTreeItem.SQLType.Schema
});
}
}