表添加源
我建了一CrystalReport表
面分一主表和一子表
一怎表提供源
以我是我的一段代

private void crystalReportViewer1_Load(object sender, EventArgs e)
{
DataTable datatable=new DataTable();
DataTable subdatable=new DataTable();
Tree tree = new Tree();//初始
datatable.Clear();
subdatatable.Clear();
datatable = tree.getReportInfo(tempProID);//主表源
subdatatable=tree.getSubReportInfo(tempProID);//子表源
CrystalReport1 Cr = new CrystalReport1();
Cr.SetDataSource(datatable);//於方表源
Cr.Subreports[ "KdSubReport "].SetDataSource(subdatatable);//於子表源
crystalReportViewer1.ReportSource = Cr;
crystalReportViewer1.Refresh();

}

[解决办法]
Cr.Subreports[ "KdSubReport "]
改成Cr.Subreports[0]试试