尚未指定报告定义的来源

Question

我正在使用以下代码输入参数.....

var invdata = SaleInvCode.GetbyId(invID);
var invdat = (from a in db.invDetails where a.InvDetailID == invID select new { a.SaleInv, a.ProName, a.Discription, a.SaleQTY, a.SalePrice, a.SaleAmount }).ToList();
//var invdetai = from a in db.invHeaders select a;
/////////////////////////
invHeader.DataSource = invdata;
reportViewer1.LocalReport.DataSources.Add(new ReportDataSource(reportViewer1.LocalReport.GetDataSourceNames()[0], invHeader));
reportViewer1.ProcessingMode = Microsoft.Reporting.WinForms.ProcessingMode.Local;

错误

Error:: The source of the report definition has not been specified

我正在创建报告参数.....

Answer 1

在分配任何参数之前，您需要告诉报告查看器使用哪个本地报告。