我在 MVC5 Visual Studio 2015 工作。我想创建一个父子报表，父报表加载而子报表不加载。如果我单击父报表上的参数字段，子报表将像要加载一样执行，但会弹出错误“未为 DataSet1 提供数据源”下面是我的代码示例：
System.Data.DataSet ds = new System.Data.DataSet();
public ActionResult ReportStudClass()
{
//string CommandText = ("select Se.Session_Name,Tm.Term_Name,CLN.CL_Name,St.Student_Classid,St.RegistrationNo from Student_Class St "
// + " inner join Session Se ON St.Sessionid = Se.Sessionid inner join Term Tm ON St.Termid = Tm.Termid inner join Class_Name CLN "
// + " ON St.Class_Nameid = CLN.Class_Nameid where St.Sessionid = @SessionParam and St.Termid = @TermParam and St.Class_Nameid = @ClassParam ");
// Set the processing mode for the ReportViewer to Local
// ReportViewer reportViewer = new ReportViewer();
// reportViewer.ProcessingMode = ProcessingMode.Local;
// LocalReport localReport = reportViewer.LocalReport;
// localReport.ReportPath = "Report1.rdlc";
// System.Data.DataSet dataset = new System.Data.DataSet("Report1");
// GetBill_Indv(ref dataset);
// ReportDataSource dsBPIndvRpt = new ReportDataSource();
//// ReportDataSource source = new ReportDataSource("DataSet1", dataset.Tables[0]);
// dsBPIndvRpt.Name = "BPIndvRpt";
// dsBPIndvRpt.Value = dataset.Tables["BPIndvRpt"];
// dsBPIndvRpt.DataMember = "DataSet1";
// // DataSet ds = new DataSet("Sales Order Detail");
// // string salesOrderNumber = "SO43661";
// localReport.DataSources.Add( dsBPIndvRpt);
// ViewBag.ReportViewer = reportViewer;
// return View();
ReportViewer reportViewer = new ReportViewer();
reportViewer.ProcessingMode = ProcessingMode.Local;
reportViewer.ShowPrintButton = true;
reportViewer.SizeToReportContent = true;
reportViewer.Width = Unit.Percentage(900);
reportViewer.Height = Unit.Percentage(900);
string sconn = System.Configuration.ConfigurationManager.ConnectionStrings["SchoolFinanceDbContext"].ConnectionString;
var conn = new SqlConnection(sconn);
//DataTable dtbl = new DataTable("DataTable1");
SqlDataAdapter adp = new SqlDataAdapter();
adp.SelectCommand = new SqlCommand();
adp.SelectCommand.Connection = conn;
adp.SelectCommand.CommandText = "Bill_Prep_IndvRepChildUF";
adp.SelectCommand.CommandType = CommandType.StoredProcedure;
//adp.Fill(ds);
// ReportDataSource source = new ReportDataSource("DataSet1", ds.Tables[0]);
// SqlDataAdapter adp = new SqlDataAdapter("select Bill_Prep_Indvid,Bill_Prepid,Student_Classid,RegistrationNo,Class_Nameid, Sessionid,Termid,Bill_Typeid,Description,Bill_Percent, Bill_Amount-(Bill_Amount*Bill_Percent) as BillAmount from Bill_Prep_Indv", conn);
// SqlDataAdapter adp = new SqlDataAdapter("select Bill_Prep_Indvid,Bill_Prepid,Student_Classid,RegistrationNo,"+
// " Class_Nameid, Sessionid,Termid,Bill_Typeid,Description,Bill_Percent, Bill_Amount from Bill_Prep_Indv", conn);
//SqlCommand comm1 = new SqlCommand("Select * from Session", conn);
//SqlDataAdapter adp = new SqlDataAdapter("Select * from Student_Class", conn);
// SqlDataAdapter adp = new SqlDataAdapter("Select * from Bill_Prep", conn);
//SqlDataAdapter adp = new SqlDataAdapter("Select * from Bill_Prep_Indv", conn);
//SqlCommand cmd = new SqlCommand("Bill_Prep_IndvRep");
// SqlDataAdapter adp = new SqlDataAdapter(cmd);
adp.SelectCommand.CommandTimeout = 0;
adp.Fill(ds);
//adp.Fill(ds, "Student_Class");
// adp.Fill(ds, "Bill_Prep_Indv");
// adp.Fill(ds, "Bill_Prep_Indv");
//Add parameters table
//SqlCommand comm1 = new SqlCommand("Select * from Session", conn);
//ds.Tables.Add("Se");
//adp.SelectCommand = comm1;
//adp.Fill(ds.Tables["Se"]);
//SqlCommand comm2 = new SqlCommand("Select * from Term", conn);
//ds.Tables.Add("Tm");
//adp.SelectCommand = comm2;
//adp.Fill(ds.Tables["Tm"]);
// adp.SelectCommand = cmd //cmd represent query parameter or sqlcommand query
reportViewer.LocalReport.ReportPath = Request.MapPath(Request.ApplicationPath) + @"Report\Report5.rdlc";
reportViewer.LocalReport.DataSources.Add(new ReportDataSource("DataSet2", ds.Tables[0]));
// call drillthrough report
reportViewer.Drillthrough += new DrillthroughEventHandler(reportViewer_Drillthrough);
// reportViewer.LocalReport.DataSources.Clear();
// reportViewer.LocalReport.DataSources.Add(source);
// reportViewer.LocalReport.Refresh();
// Cache["DsChild"] = "Dataset2";
ViewBag.ReportViewer = reportViewer;
return View();
}
private DataTable GetBillReport( int Sessionid)
{
System.Data.DataSet ds2 = new System.Data.DataSet();
try
{
//DataTable dt = new DataTable();
//DataTable dtSe = new DataTable();
//DataTable dtTm = new DataTable();
//DataTable dtBt = new DataTable();
string sconn = System.Configuration.ConfigurationManager.ConnectionStrings["SchoolFinanceDbContext"].ConnectionString;
using (SqlConnection conn = new SqlConnection(sconn))
{
// SqlDataAdapter adp = new SqlDataAdapter("select BPIV.Bill_Prep_Indvid, BPIV.Bill_Prepid, BPIV.Student_Classid, BPIV.RegistrationNo,"+
//"Cn.CL_Name, Cn.Class_Nameid, Se.Sessionid, Se.Session_Name, Tm.Termid, Tm.Term_Name, Bt.Bill_Typeid, Bt.Bill_Name, BPIV.Description, BPIV.Bill_Percent,"+
//"BPIV.Bill_Amount from Bill_Prep_Indv BPIV"+
//"inner join Session Se ON BPIV.Sessionid = Se.Sessionid"+
//"inner join Term Tm ON BPIV.Termid = Tm.Termid"+
//"inner join Class_Name Cn ON BPIV.Class_Nameid = Cn.Class_Nameid"+
//"inner join Bill_Type Bt ON BPIV.Bill_Typeid = Bt.Bill_Typeid"+
//"where BPIV.Sessionid = @Sessionid and BPIV.Termid = @Termid and BPIV.Bill_Typeid = @BTypeid", conn);
//SqlDataAdapter adp = new SqlDataAdapter(cmd);
SqlDataAdapter adp = new SqlDataAdapter();
adp.SelectCommand = new SqlCommand();
adp.SelectCommand.Connection = conn;
adp.SelectCommand.CommandText = "Bill_Prep_IndvRepChild";
adp.SelectCommand.CommandType = CommandType.StoredProcedure;
// Sets the productid parameter.
adp.SelectCommand.Parameters.Add((new SqlParameter("@Sessionid", SqlDbType.Int)).Value = Sessionid);
//adp.SelectCommand.Parameters.Add((new SqlParameter("@Termid", SqlDbType.Int)).Value = Termid);
//adp.SelectCommand.Parameters.Add((new SqlParameter("@BTyped", SqlDbType.Int)).Value = BillTypeid);
//adp.SelectCommand = cmd;
// ds1.Tables.Add("Bill");
adp.Fill(ds2);
// adp.Fill(ds1);
// Sets the productid parameter.
//cmd.Parameters.Add((new SqlParameter("@Sessionid", SqlDbType.Int)).Value = Sessionid);
//cmd.Parameters.Add((new SqlParameter("@Termid", SqlDbType.Int)).Value = Termid);
//cmd.Parameters.Add((new SqlParameter("@BTyped", SqlDbType.Int)).Value = BTypeid);
// SqlCommand cmd = new SqlCommand();
//adp.SelectCommand = cmd;
adp.SelectCommand.CommandTimeout = 0;
// adp.Fill(dt,"Bill");
//adp.Fill(dt);
//SqlCommand comm1 = new SqlCommand("Select * from Session", conn);
//ds1.Tables.Add("Se");
//adp.SelectCommand = comm1;
//adp.Fill(ds1.Tables["Se"]);
//SqlCommand comm2 = new SqlCommand("Select * from Term", conn);
//ds1.Tables.Add("Tm");
//adp.SelectCommand = comm2;
//adp.Fill(ds1.Tables["Tm"]);
//SqlCommand comm3 = new SqlCommand("Select * from Bill_Type", conn);
//ds1.Tables.Add("Bt");
//adp.SelectCommand = comm3;
//adp.Fill(ds1.Tables["Bt"]);
// dt..Tables.Add("Bt");
}
return ds2.Tables[0];
// return ds2.Bill_Prep_Indv;
}
catch
{
throw;
}
}
protected void reportViewer_Drillthrough(object sender, Microsoft.Reporting.WebForms.DrillthroughEventArgs e)
{
try
{
//BindingSource source = new BindingSource();
//Microsoft.Reporting.WebForms.ReportDataSource dataSrc = new Microsoft.Reporting.WebForms.ReportDataSource();
//dataSrc.Name = "DataSet1";
//dataSrc.Value = this.DataTableBindingSource;
//System.Data.DataSet ds = new System.Data.DataSet("Dataset2");
//DataTable dtBill = new DataTable("Bill");
//string sconn = System.Configuration.ConfigurationManager.ConnectionStrings["SchoolFinanceDbContext"].ConnectionString;
//var conn = new SqlConnection(sconn);
//SqlDataAdapter adp = new SqlDataAdapter();
//adp.SelectCommand = new SqlCommand();
//adp.SelectCommand.Connection = conn;
//adp.SelectCommand.CommandText = "Bill_Prep_IndvRepChildUF";
//adp.SelectCommand.CommandType = CommandType.StoredProcedure;
int Sessionid = 0;
//int Termid = 0;
//int BillTypeid = 0;
//adp.Fill(ds,"dtBill");
//TimeSpan ts = new TimeSpan(0, 0, 10);
// Cache["DsBill"] = ds1;
// Cache["DsBill"] = dtBill;
// Cache.insert("Employee", dtBill, null, Cache.NoAbsoluteExpiration, ts);
// ds = (DataTable)Cache["ds1"];
// ReportViewer reportViewer = new ReportViewer();
//Get the instance of the Target report.
LocalReport report = (LocalReport)e.Report;
// report.DataSources.Add(dataSrc);
//Get all the parameters passed from the main report to the target report.
//OriginalParametersToDrillthrough actually returns a Generic list of
//type ReportParameter.
IList<ReportParameter> list = report.OriginalParametersToDrillthrough;
//Parse through each parameters to fetch the values passed along with them.
foreach (ReportParameter param in list)
{
//Since we know the report has only one parameter and it is not a multivalued,
//we can directly fetch the first value from the Values array.
Sessionid = Convert.ToInt32(param.Values[0].ToString());
//Termid = Convert.ToInt32(param.Values[1].ToString());
//BillTypeid = Convert.ToInt32(param.Values[2].ToString());
}
//DataTable dt2 = GetBillReport(Sessionid);
report.DataSources.Add(new ReportDataSource("DataSet1", GetBillReport(Sessionid)));
// report.DataSources.Add(new ReportDataSource("DataSet1", ds1.Tables[0]));
//report.DataSources.Add(new ReportDataSource("Session", ds1.Tables[1]));
//report.DataSources.Add(new ReportDataSource("Term", ds1.Tables[2]));
//report.DataSources.Add(new ReportDataSource("BillType", ds1.Tables[3]));
//report.DataSources.Add(new ReportDataSource("Session", GetBillReport(Sessionid, Termid, BTypeid)));
//report.DataSources.Add(new ReportDataSource("Term", GetBillReport(Sessionid, Termid, BTypeid)));
//report.DataSources.Add(new ReportDataSource("BillType", GetBillReport(Sessionid, Termid, BTypeid)));
// reportViewer.LocalReport.ReportPath = Request.MapPath(Request.ApplicationPath) + @"Report\Report4.rdlc";
report.Refresh();
// ViewBag.ReportViewer = report;
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}