My crystal report viewer not showing records from my datatable

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CrystalReports

i have create a dataset with vs designer with only one datatable name mydt
Now in code i have created an instance of my dataset




DataSet1 dsobj = new DataSet1();

I have a list campus which is assigned to a dt

DataTable dt = ToDataTable(campus);

MessageBox.Show(dt.Rows.Count.ToString()); // this shows 5 rows for instance

dsobj.mydt.Load(ToDataTable(campus).CreateDataReader());

MessageBox.Show(dsobj.spCampus_GetAll.Rows.Count.ToString()); // this shows 5 rows as well

but when i set crystal report source to dsobj.mydt
report.SetDataSource((System.Data.DataTable)dsobj.mydt);

upon loading crystal report viewer it does not show any entries despite i have added dataset field in my report

What I have tried:

DataTable dt = ToDataTable(campus);
MessageBox.Show(dt.Rows.Count.ToString()); // this shows 5 rows for instance
dsobj.mydt.Load(ToDataTable(campus).CreateDataReader());
MessageBox.Show(dsobj.spCampus_GetAll.Rows.Count.ToString()); // this shows 5 rows as report.SetDataSource((System.Data.DataTable)dsobj.mydt);