C# 如何检查报告是否在asp.net stimulsoft中打印

我从stimulsoft论坛上获取了这段代码，我想在asp.net中做同样的事情，在web中DialogResult.OK的等价物是什么

private void report_Printing(object sender, EventArgs e) 
    { 
        StiReport report = sender as StiReport; 
        if ((report.PrinterSettings.PrintDialogResult == DialogResult.OK)) 
        { 
            MessageBox.Show("Printing"); 
        } 
        stiVewForm.Close();            
    }