private void MenuItemDelServer_Click(object sender, EventArgs e)
{
var selectedNode = tvServers.SelectedNode;
var config = selectedNode?.Tag as ServerConfig;
if (selectedNode != null && config != null)
{
if (MessageBox.Show($"确定要删除服务器[{config.Name}]吗？", "提升", MessageBoxButtons.OKCancel) == DialogResult.OK)
{
ServerConfig.Delete(config.Id);
this.LoadGroup();
}
}
}