private void frmPrintUserPrize_Load(object sender, EventArgs e) {
DBOperate operate = new DBOperate();
operate.OpenConnection();
DataTable table = operate.GetTable("select * from tb_prize");//1.
PrizeReport pr = new PrizeReport();//2.
pr.SetDataSource(table);//3.
crystalReportViewer1.ReportSource = pr;//显示报表
operate.CloseConnection();
}