我有RDLC报告，有报告。当我使用报表查看器时，系统工作正常。但是当我想加载没有报表查看器的报表时，系统会返回错误。请帮助我。感谢
public void DetailsReport()
{
string mimeType;
byte[] renderedBytes;
string reportPath = "rptAllEmployees.rdlc";//report path
string datasetName = "my";//report datasource
decimal reportWidth = 11.5m;
decimal reportHeight = 8.5m;
PopulateReport( CustomDS.GetAllEmployees(), datasetName, reportPath, out mimeType, out renderedBytes, reportWidth, reportHeight);
//return File(renderedBytes, mimeType);
}
private void PopulateReport(List<Employee> objectList, string datasetName, string reportPath, out string mimeType, out byte[] renderedBytes, decimal fileWidth, decimal fileHeight)
{
LocalReport localReport = new LocalReport();
localReport.ReportPath = Server.MapPath(reportPath);
ReportDataSource reportDataSource = new ReportDataSource(datasetName, objectList);
localReport.SubreportProcessing +=
new Microsoft.Reporting.WebForms.SubreportProcessingEventHandler(LocalReport_SubreportProcessing);
localReport.DataSources.Add(reportDataSource);
//localReport.SetParameters(new ReportParameter("pm", "", false));
string reportType = "PDF";
mimeType = string.Empty;
string encoding = string.Empty;
string fileNameExtension = string.Empty;
//The DeviceInfo settings should be changed based on the reportType
string deviceInfo =
"<DeviceInfo>" +
" <OutputFormat>PDF</OutputFormat>" +
" <PageWidth>" + fileWidth + "in</PageWidth>" +
" <PageHeight>" + fileHeight + "in</PageHeight>" +
" <MarginTop>0.5in</MarginTop>" +
" <MarginLeft>1in</MarginLeft>" +
" <MarginRight>1in</MarginRight>" +
" <MarginBottom>0.5in</MarginBottom>" +
"</DeviceInfo>";
Warning[] warnings;
string[] streams;
//Render the report
//Eror occured in this point
**renderedBytes = localReport.Render(reportType, deviceInfo, out mimeType, out encoding, out fileNameExtension, out streams, out warnings);**
//Clear the response stream and write the bytes to the outputstream
//Set content-disposition to "attachment" so that user is prompted to take an action
//on the file (open or save)
Response.Clear();
Response.ContentType = mimeType;
Response.AddHeader("content-disposition", "attachment; filename=foo." + fileNameExtension);
Response.BinaryWrite(renderedBytes);
Response.End();
}
void LocalReport_SubreportProcessing(
object sender,
Microsoft.Reporting.WebForms.SubreportProcessingEventArgs e)
{
// get empID from the parameters
int iEmpID = Convert.ToInt32(e.Parameters[0].Values[0]);
// remove all previously attached Datasources, since we want to attach a
// new one
e.DataSources.Clear();
// Retrieve employeeFamily list based on EmpID
var employeeFamily = CpReportCustomData.Data.CustomDS.GetAllEmployeeFamily()
.FindAll(element => element.ID == iEmpID);
// add retrieved dataset or you can call it list to data source
e.DataSources.Add(new Microsoft.Reporting.WebForms.ReportDataSource()
{
Name = "DSEmployeeFamily",
Value = employeeFamily
});
}
public class CustomDS
{
private static List<Employee> _lstEmployee = null;
public static List<Employee> GetAllEmployees()
{
if (_lstEmployee == null)
{
_lstEmployee = new List<Employee>();
_lstEmployee.Add( new Employee()
{
ID=1,
Name="Alok",
Age=30
});
_lstEmployee.Add(new Employee()
{
ID = 2,
Name = "Ashish",
Age = 30
});
_lstEmployee.Add(new Employee()
{
ID = 3,
Name = "Jasdeep",
Age = 30
});
_lstEmployee.Add(new Employee()
{
ID = 4,
Name = "Kamlesh",
Age = 31
});
}
return _lstEmployee;
}
private static List<EmployeeFamily> _lstEmployeeFamily = null;
public static List<EmployeeFamily> GetAllEmployeeFamily()
{
if (_lstEmployeeFamily == null)
{
_lstEmployeeFamily = new List<EmployeeFamily>();
_lstEmployeeFamily.Add(new EmployeeFamily()
{
ID = 1,
Name = "AlokWife",
Relation = "Wife"
});
_lstEmployeeFamily.Add(new EmployeeFamily()
{
ID = 1,
Name = "AlokDaughter",
Relation = "Daughter"
});
_lstEmployeeFamily.Add(new EmployeeFamily()
{
ID = 2,
Name = "AshishWife",
Relation = "Wife"
});
_lstEmployeeFamily.Add(new EmployeeFamily()
{
ID = 3,
Name = "JasdeepFather",
Relation = "Father"
});
_lstEmployeeFamily.Add(new EmployeeFamily()
{
ID = 3,
Name = "JasdeepMother",
Relation = "Mother"
});
_lstEmployeeFamily.Add(new EmployeeFamily()
{
ID = 4,
Name = "KamleshWife",
Relation = "Wife"
});
_lstEmployeeFamily.Add(new EmployeeFamily()
{
ID = 4,
Name = "KamleshDaughter",
Relation = "Daughter"
});
}
return _lstEmployeeFamily;
}
public class Employee
{
public int ID { get; set; }
public string Name { get; set; }
public int Age { get; set; }
}
public class EmployeeFamily
{
public int ID { get; set; }
public String Name { get; set; }
public string Relation { get; set; }
}