public Dictionary <string, object> YearHistogram()
{
Dictionary <string, object> r = new Dictionary <string, object>();
try
{
DataTable dt = db.YearHistogram();
if (dt.Rows.Count > 0)
{
r["message"] = "成功";
r["code"] = 2000;
r["items"] = dt;
}
else
{
r["message"] = "成功但是没有数据";
r["code"] = 2000;
r["items"] = new DataTable();
}
}
catch (Exception e)
{
r["code"] = -1;
r["message"] = e.Message;
}
return(r);
}