protected virtual void OnButtonRemoveClicked(object sender, System.EventArgs e)
{
TreeIter iter;
TreeModel model;
if (repoTree.Selection.GetSelected(out model, out iter))
{
VersionControlService.RemoveRepository(
(Repository)store.GetValue(iter, RepositoryCol));
VersionControlService.SaveConfiguration();
store.Remove(ref iter);
}
}