如何在点击winforms c#中的按钮时一次打印多个水晶报表“？

using CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.Windows.Forms;

private void btnPrint_Click(object sender, EventArgs e)
{
    CrystalReportViewer crystalReportViewer = new CrystalReportViewer();
    
    // 创建CrystalReportDocument对象并加载报表文件
    ReportDocument report1 = new ReportDocument();
    report1.Load("report1.rpt");
    
    ReportDocument report2 = new ReportDocument();
    report2.Load("report2.rpt");
    
    // 设置报表参数
    report1.SetParameterValue("param1", value1);
    report2.SetParameterValue("param2", value2);
    
    // 将报表赋值给CrystalReportViewer控件
    crystalReportViewer.ReportSource = report1;
    crystalReportViewer.ReportSource = report2;
    
    // 打印报表
    crystalReportViewer.PrintReport();
}