Question

我是.net开发者。在这里，我只想将CrstalReport文档路径设置为数据集。这是我的代码：

 ReportDocument reportdocument = new ReportDocument();
 reportdocument.SetDataSource(myDataSet);
 CrystalReportViewer1.ReportSource = reportdocument;

此处在SetDataSource（myDataset）行发生错误，如：

Server Error in '/EasyWeb' Application.
Invalid report file path.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: CrystalDecisions.CrystalReports.Engine.LoadSaveReportException: Invalid report file path.

Source Error:


Line 1652:                    }
Line 1653:                    myDataSet.Tables.Add(dt);
Line 1654:                    reportdocument.SetDataSource(myDataSet);
Line 1655:                    break;
Line 1656:                case "Outbox":


Source File: f:\EasyWeb\EndUser\Post_History.aspx.cs    Line: 1654

Stack Trace:


[LoadSaveReportException: Invalid report file path.]
   CrystalDecisions.CrystalReports.Engine.EngineExceptionUtils.DoThrowException(String message, EngineExceptionErrorID id) +89
   CrystalDecisions.CrystalReports.Engine.ExceptionThrower.ThrowEngineException(String messageID, EngineExceptionErrorID id) +269
   CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String filename, OpenReportMethod openMethod, Int16 parentJob) +340
   CrystalDecisions.CrystalReports.Engine.ReportDocument.EnsureLoadReport() +175
   CrystalDecisions.CrystalReports.Engine.ReportDocument.SetDataSourceInternal(Object val, Type type) +89
   CrystalDecisions.CrystalReports.Engine.ReportDocument.SetDataSource(DataSet dataSet) +115
   EndUser_FS_File_History.lbut_print_Click(Object sender, EventArgs e) in f:\EasyWeb\EndUser\Post_History.aspx.cs:1654
   System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e) +111
   System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +79
   System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +175
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565


Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053

我在这里出错......

--------------------------------------更新----- -----------------------------------------------

这是我的LINQ代码：

 var query1 = from p in db.Posts
                                 join c in db.Categories on p.Category_id equals c.Id
                                 join u in db.Users on p.User_id equals u.Id
                                 where (p.ToUser_id == user_id || p.ToUser_id == null) && p.User_id != user_id && (p.group_id == group_id || p.group_id == null) && (p.status_id == int.Parse(Session["status_id"].ToString()) || p.status_id == null)
                                 orderby p.Sent_Datetime descending
                                 select new
                                 {
                                     Id = p.Id,
                                     Title = p.Title,
                                     Publisher = u.First_name + " " + u.Last_name,
                                     PublishDate = p.Sent_Datetime,
                                     IsFile = p.IsFileAttached,
                                     CategoryName = c.Category_name,
                                     FileSize = p.TotalFileSize
                                 };
                    foreach (var item in query1)
                    {
                        if (item != null)
                        {
                            var query1_1 = from f in db.Flags
                                           where f.Post_History_id == item.Id && f.User_id == user_id
                                           select new
                                           {
                                               IsImp = f.IsImportant,
                                               IsTrashed = f.IsTrashed,
                                               IsRemoved = f.IsRemoved
                                           };
                            bool IsIns = true;
                            bool IsImp = false;
                            foreach (var item1 in query1_1)
                            {
                                if (item1 != null)
                                {
                                    if (item1.IsTrashed == true || item1.IsRemoved == true)
                                    {
                                        IsIns = false;
                                    }
                                    if (item1.IsImp != null)
                                    {
                                        IsImp = bool.Parse(item1.IsImp.ToString());
                                    }
                                    break;
                                }
                            }
                            if (IsIns == true)
                            {
                                DataRow dr = dt.NewRow();
                                dr["Id"] = item.Id.ToString();
                                dr["IsImp"] = IsImp;
                                dr["Title"] = item.Title.ToString();
                                dr["Publisher"] = item.Publisher.ToString();
                                dr["PublishDate"] = Convert.ToDateTime(item.PublishDate.ToString());
                                dr["IsFile"] = bool.Parse(item.IsFile.ToString());
                                dr["CategoryName"] = item.CategoryName.ToString();
                                dr["FileSize"] = item.FileSize.ToString();
                                dt.Rows.Add(dr);
                            }
                        }
                    }
                    myDataSet.Tables.Add(dt);

Answer 1

在声明后试试。

reportdocument.Load("FilePath");

您的错误显示。

Server Error in '/EasyWeb' Application.
Invalid report file path.

表示您未指定报告路径或指定路径无效。

如何在asp.net 3.5中将CrystalReport文档路径设置为DataSet

1 个答案: