C#如何使用LINQ填充水晶报告

我想用LINQ来填充水晶报告.

这是我的代码:

var results = (from supp in dbdata.Suppliers select supp).ToList();
cr1.Load(@"CrystalReport1.rpt");
cr1.SetDataSource(results);
crystalReportViewer1.ReportSource = cr1;

当我运行应用程序时,它会生成一个错误:

DataSet does not support System.Nullable<>.

我该如何解决?

最佳答案 试试这个 :

 CrystalReport1 cr = new CrystalReport1();

    var results = (from supp in dbdata.tSamples
                  where supp.ID == IDNUMBER
                  select new { supp.Name, supp.Model, supp.Producer }).ToList();

    cr.SetDataSource(results);
    crystalReportsViewer1.ReportSource = cr;
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