private void Frm_Report_Load(object sender, EventArgs e)
{
using (var db = new AX50SP1_TCJEntities())
{
var ds = (from c in db.TCJ_OnlineUserAX select c).ToList();
Rpt_Useron rpt = new Rpt_Useron();
rpt.SetDataSource(ds);
crystalReportViewer1.ReportSource = rpt;
crystalReportViewer1.Refresh();
}
}
พอรัน แล้ว เกิด Error
DataSet does not support System.Nullable<>