private void DefaultBtn_Click(object sender, EventArgs e)
{
var serverInfo = ConfigurationManager.GetSection("mongoServerInfo") as System.Collections.Specialized.NameValueCollection;
DbAddressTxt.Text = serverInfo["ServerAddr"].ToString();
DbNameTxt.Text = serverInfo["DBName"].ToString();
CollectionNameTxt.Text = serverInfo["CollectionName"].ToString();
PortTxt.Text = serverInfo["Port"].ToString();
ConnectBtn.Focus();
}
