I have mention how to split values in your chart web part,
foreach (DataRow item in dt.Rows) { if (!string.IsNullOrEmpty(item["YourItemname"].ToString()) && item["yourItemname"].ToString().Contains("#"))
foreach (DataRow item in dt.Rows)
{
if (!string.IsNullOrEmpty(item["YourItemname"].ToString()) && item["yourItemname"].ToString().Contains("#"))
item["YourItemname"] = item["YourItemname"].ToString().Split('#')[1];
}
}
Hope this answers is very helpful for you.