看看这段代码对你有没有用处:
string strProvider = "Server=(local);;DataBase=pubs;;UID=sa;;PWD=";; 
   CrystalReport1 oCR = new CrystalReport1();; 
   Dataset1 ds = new Dataset1();; 
   SqlConnection MyConn = new SqlConnection(strProvider);; 
   MyConn.Open();; 
   string strSel = "Select * from Stores";; 
   SqlDataAdapter MyAdapter = new SqlDataAdapter(strSel,MyConn);; 
   MyAdapter.Fill(ds,"stores");; 
   oCR.SetDataSource(ds);; 
   this.CrystalReportViewer1.ReportSource = oCR;;