SqlConnection myConnection;
string ConnString=System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];
string sql="select * from cs";

myConnection=new SqlConnection();
myConnection.ConnectionString=ConnString;
SqlDataAdapter da=new SqlDataAdapter(sql,myConnection);
cc dd=new cc();//这是一个数据集;
            da.Fill(dd);
              CrystalReport2 rp=new CrystalReport2();//水晶报表文件;
 rp.SetDataSource(dd);
               CrystalReportViewer1.ReportSource=rp;
CrystalReportViewer1.DataBind();
请问一下高手.为什么我这样做的水晶报表显示不出来记录内容??