[英]Report Viewer export to pdf getting error
I am getting this error "Cannot create a data reader for dataset 'DataSet1'." 我收到此错误“无法为数据集'DataSet1'创建数据读取器”。
I expend lots of my time for solving this issue but unable to resolved.Same code is working good for report generation but at the time of pdf generation it stuck. 我花了很多时间来解决这个问题,但是无法解决。相同的代码可以很好地生成报告,但是在生成pdf时却卡住了。
Here is my code please reply. 这是我的代码,请回复。
protected void btnPdf_Click(object sender, EventArgs e)
{
string PDF = "PDF";
string ReportType = "ReportType";
Warning[] warnings = null;
string[] streamIds = null;
string mimeType = string.Empty;
string encoding = string.Empty;
string extension = string.Empty;
string filetype = string.Empty;
long _landIds = 0;
if (_farmId > 0)
{
Land land = LandManager.GetLandByFarmID(_farmId);
_landIds = land.LandID;
}
ReportViewer_MyReportID.SizeToReportContent = true;
ReportViewer_MyReportID.LocalReport.ReportPath = "reports/report/report.rdlc";
ReportViewer_MyReportID.ProcessingMode = ProcessingMode.Remote;
ObjectDataSource_Id.SelectParameters.Clear();
ObjectDataSource_Id.SelectParameters.Add(QueryStringEnum.CompanyID, CurrentCompanyID.ToString());
ObjectDataSource_Id.SelectParameters.Add(QueryStringEnum.LandID, _landIds.ToString());
var days = "-" + rdDuration.SelectedValue;
ObjectDataSource_Id.SelectParameters.Add(QueryStringEnum.Days, days.ToString());
ReportViewer_MyReportID.LocalReport.Refresh();
byte[] bytes = ReportViewer_MyReportID.LocalReport.Render("PDF", null,
out mimeType, out encoding, out extension, out streamIds, out warnings);
FileStream fs = new FileStream(Server.MapPath("~/GeneratedFiles/" + ReportType + "." + "PDF"), FileMode.OpenOrCreate);
fs.Write(bytes, 0, bytes.Length);
fs.Close();
}
It will work for you.Make sure dataset name is not different. 它会为您工作。确保数据集名称没有不同。
Code for your reference. 代码供您参考。
protected void btnPdf_Click(object sender, EventArgs e)
{
ReportViewer viwer = new ReportViewer();
ObjectDataSource ob = new ObjectDataSource("dataset.YourTableAdapter", "GetData");
dataset.YourTableAdapter ds = new dataset.YourTableAdapter();
string PDF = "PDF";
string ReportType = "ReportType";
Warning[] warnings = null;
string[] streamIds = null;
string mimeType = string.Empty;
string encoding = string.Empty;
string extension = string.Empty;
string filetype = string.Empty;
long _landIds = 0;
if (_farmId > 0)
{
Land land = LandManager.GetLandByFarmID(_farmId);
_landIds = land.LandID;
}
viwer.SizeToReportContent = true;
viwer.LocalReport.ReportPath = "reports/report/report.rdlc";
viwer.ProcessingMode = ProcessingMode.Local;
ob.SelectParameters.Clear();
ob.SelectParameters.Add(QueryStringEnum.CompanyID, CurrentCompanyID.ToString());
ob.SelectParameters.Add(QueryStringEnum.LandID, _landIds.ToString());
var days = "-" + rdDuration.SelectedValue;
ob.SelectParameters.Add(QueryStringEnum.Days, days.ToString());
ReportDataSource rds = new ReportDataSource("datasetname", (object) ds.GetData((long?)CurrentCompanyID.ToInt64(), (int?)days.ToInt(), (long?)_landIds.ToInt64()));
viwer.LocalReport.DataSources.Add(rds);
viwer.LocalReport.Refresh();
byte[] bytes = viwer.LocalReport.Render("PDF", null,
out mimeType, out encoding, out extension, out streamIds, out warnings);
FileStream fs = new FileStream(Server.MapPath("~/GeneratedFiles/" + ReportType + "." + "PDF"), FileMode.OpenOrCreate);
fs.Write(bytes, 0, bytes.Length);
fs.Close();
}
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