用钻取反回方法
private void reportViewerDrillthrough(object sender, DrillthroughEventArgs e)
{
LocalReport lp = (LocalReport)e.Report;
string detail = lp.GetParameters()["参数名"].Values[0].Trim();//以这样方式进行参数的取值
e.Cancel = true;//以这样的方式进行钻取动作的终止
}