I want to show different reports in ReportViewer component, based on selected text in comboBox, but it seems I'm having difficulties binding data sources to reports.
This is the code in comboBox.TextChanged(object sender, EventArgs e) handler
reportViewer.Reset();
this.reportViewer.LocalReport.ReportEmbeddedResource = "ReportViewer." + MapComboBoxItem2ReportName(cbReports.Text) + ".rdlc";
this.reportViewer.RefreshReport();
I'm getting an error: "A data source instance has not been supplied for the datasource DataSet1".
What else do I need to do so I could load report dynamically?
When you change the reportViewer's source report, you have also have to to set the datasources for it. Normally, the designer handles that for you (take a look at the designer generated code to see how it handles it), but changing the source report resets the LocalReport object of the control.
Therefore you need to supply all datasources to your report so that it can display correctly :
this.reportViewer.LocalReport.ReportEmbeddedResource = "ReportViewer." + MapComboBoxItem2ReportName(cbReports.Text) + ".rdlc";
this.reportViewer.LocalReport.Datasource.Add("Datasource1", whateverIsYourDatasourceObject)
this.reportViewer.RefreshReport();
You have to add the same line for every datasource defined in your report. If you're not sure about the datasources names you need to use, look at the designer generated code to see what they are. You can also use the following code to find out all the report's datasources names :
this.reportViewer.LocalReport.GetDataSourceNames()
If your report has variables, you need to define them too, otherwise you'll get the same error.
Hope that helps
you left out the ReportPath.
this.reportViewer.LocalReport.ReportPath = "Reports\\" + MapComboBoxItem2ReportName(cbReports.Text) + ".rdlc";
this.reportViewer.LocalReport.ReportEmbeddedResource = "ReportViewer." + MapComboBoxItem2ReportName(cbReports.Text) + ".rdlc";
this.reportViewer.LocalReport.Datasource.Add("Datasource1", whateverIsYourDatasourceObject)
this.reportViewer.RefreshReport();
A data source instance has not been supplied for the datasource
DataSet1
Please make sure first parameter name is "DataSet1". Which would be the one you created a new DataSource in .rdlc Design Form and named as "DataSet1".
this.reportViewr.LocalReport.DataSources.Add(new ReportDataSource("DataSet1",
yourDataSet.Tables[0]));
Related
I'm really new to RDLC so please forgive me if I'm missing something obvious.
I have some data that needs to get repeated, based on a 1:Many dataset that's linked to the main report. It's not something that can be displayed in a tabular fashion because the customers want it laid out in a specific manner, so using the Tablix control is out. I have a number of subreports based on 1:1 datasets in this main report, and everything is cool with those. I created a subreport for this new dataset and added it to the main RDLC report. Everything works fine, but it only includes the first record of the dataset.
Is it possible to repeat this subreport for each record in the dataset? I think the thing that confuses me is the main RDLC has no code that specifically loads the individual subreports, so I don't see anyplace obvious where I could include a loop or anything.
If you don't have particular needs I think it's important to know that you can put a Rectangle in Tablix cell and then use it as a container for simple controls as TextBox, Line, Image, etc. laied out as you want.
If you still need to use subreport you could put a SubReport in Tablix cell and solve any problem in the LocalReport.SubreportProcessing event that occurs when a subreport is processed.
If you have a lot of records you can use a single Dataset and filtered it in the SubreportProcessing event, using the subreport Parameters that you already set in Designer Mode.
Private Sub SubreportProcessingHandler(sender As Object, e As SubreportProcessingEventArgs)
Dim dvFiltered As New DataView(Me.YourDataSet.Tables(0))
dvFiltered.RowFilter = "Parameter1 = " & CInt(e.Parameters.Item("yourParameter1").Values(0)) & " AND " _
& "Parameter2 = '" & CStr(e.Parameters.Item("yourParameter2").Values(0)) & "'"
e.DataSources.Add(New ReportDataSource("YourDataSourceName", dvFiltered.ToTable("YourDataSourceName")))
End Sub
For example, using a DataSet that contains master and details data, you can build a main report grouped by IdMaster and put a subreport in details section.
This is the subreport: please note that the DataSet is the same as main report but we also need 2 Parameters (IdMaster and IdRow) to display the correct data.
In the main report you need to link subreport Parameters to actual values of DataSet.
Then, the most important part: the SubreportProcessingHandler event. This event is triggered for every instance of the subreport in the main report, so if you have 100 rows / 100 subreports this event is triggedered 100 times: every time you need to specify which data you want to display, so you have to filter the DataSet using the 2 Parameters (IdMaster and IdRow) defined in the previous step and filled with values coming from master report.
Private Sub SubreportProcessingHandler(sender As Object, e As SubreportProcessingEventArgs)
Dim dvTest As New DataView(Me.dsTest.Tables(0))
dvTest.RowFilter = "IdMaster = " & CInt(e.Parameters.Item("parIdMaster").Values(0)) & " AND " _
& "IdRow = " & CInt(e.Parameters.Item("parIdRow").Values(0))
e.DataSources.Add(New ReportDataSource("DataSet_TEST", dvTest.ToTable("DataSet_TEST")))
End Sub
This is the result:
As I stated at the beginning of the answer, if you don't have particular needs you can use a Rectangle instead of a SubReport. Regarding this example you can obtain the same result using the green Rectangle as container.
I use vs 2010 and telerik reporting 2013 Q1
use the next code to bind a datatable to report.
Reports.Report1 report = new Reports.Report1();
Telerik.Reporting.ObjectDataSource objectDataSource = new Telerik.Reporting.ObjectDataSource();
objectDataSource.DataSource = CreateData().Tables[0];
report.DataSource = objectDataSource;
Telerik.Reporting.InstanceReportSource reportSource = new Telerik.Reporting.InstanceReportSource();
reportSource.ReportDocument = report;
TelRptViewer.ReportSource = reportSource;
My report contains a simple table dataitem with 3 columns.
I have already read this topic in help.
Working With Data at Design Time-Data source available only at runtime
"This approach is useful when you cannot get the report's data source at design time or want to avoid loading real data into Visual Studio at design time. In this case you would have to mock your data just to enable the Report Designer to show any data schema. This will enable you to adjust the layout of the report and bind report items to the available data fields, while the real data will be loaded only at runtime either in NeedDataSource event or in the actual application. "
In simple reportviewer there was an xsd which prove the data schema for report.
In this viewer how its is possible to make this data schema or similar? Or there is another way to do this?
Thx.
You never said whether you have added report items (e.g. TextBoxes) in your Report1 class. Those textboxes need to have binding expressions as Value i.e. = Fields.MyDataColumn1.
Only then, would the report actually show data. You could also add a call to TelRptViewer.RefreshReport(); which is required for some viewers (e.g. Windows Forms)
Good luck!
You can bind Telerik Reports to objectdatasource at design time and drag your fields directly to the REport using Visual Designer
To create and run the reports using Visual Studio or the new Desginer while binding it to a objectdatasource : All you have to do is hardcode the connection string into the class of your data method . and inside that method use the connection string. Check my blog: http://flying2mind.blogspot.com/2013/10/creatingrunning-telerik-reports-in.html
http://flying2mind.blogspot.com/2013/07/telerik-report-doesnt-see-fields-of.html
Basically, you can add your datasource code in NeedDataSource event of your report and set the datasource. NeedDataSource event is used when there is no data source for the report.
private void Report1_NeedDataSource(object sender, EventArgs e)
{
Telerik.Reporting.Processing.Report rpt = (Telerik.Reporting.Processing.Report)sender;
this.Report1DS.Parameters[0].Value = your value to be passed to data source..;
// Similarly you can add more values of parameters.
rpt.DataSource = Report1DS;
}
I am new to RDLC reports in Visual Studio 2010.
I am working on a Website, in this I have used report feature of VS2010. I use ReportViewer to show Report1.rdlc. It is showing it perfectly. Now my requirement is to filter data in report at runtime. I go through this question but not able to understand it's answer.
Because Report1.rdlc is not available in code behind.
Now, how can I filter report's data at runtime?
Surely you assign the dataset to the rdlc report, and in the page of your reportviewer, you would be using an object datasource (and therefor an XSD dataset with datatables), which encapsulates the query.
The query naturally has a where clause, in which you insert your parameters to filter the data by, like:
WHERE (Table.Field = #Param OR #Param = A_Default_Value)
Now add the controls you like to the page before calling the report (drop-down lists, textboxes, etc..), those controls filter the Object datasource, which is mapped to a dataset in the rdlc report, and thus, the report would be filterd upon clicking on a certain button, e.g. Show Report, to refresh the object datasources (databinding them) and re-showing the report in the reportviewer.
You may consider assiging the values of the filtering controls to parameters in the rdlc, so that you may show the parameters of the report in its header upon generating it:
Parameters!ParameterName.Value
Hope that helps you.
How are you getting the data from Server, etc. Are you binding to a datatable result? If so, you can just have your query apply the filter when extracting data to begin with so you don't have to do anything special in the actual report.
Per your feedback, if you are getting a DataTable, then applying a filter should be easy like
DataTable oDT = YourSQLCommandToGetData();
oDT.DefaultView.RowFilter = "SomeColumn = x and OtherColumn = y";
And then run your report. If you want to take it to another level and ENSURE you don't have any unwanted records, you could even do something like
DataTable oNewFilteredResult = oDT.DefaultView.ToTable();
Then, you can assign the NEW table to call the RDLC.
c#, mysql in my project.
In that i create a rdlc report. I dont know to pass winform textbox value to rdlc report text field.
I googled and try some set of code. but cant get that.
If you worked in report. please help me.
My requirement is,..
I am doing college project. In that they asked bonafide certificate. So i create a winform With reportviwer, name, course, year, semester, academic year, purpose textboxs and one button. Click the button when the textboxes are filled. those text values want to pass the record textboxes.
Is it possible any way.
my report...
Set the parameters using LocalReport property in the Report Viewer
C# Code :
ReportParameterCollection reportParameters = new ReportParameterCollection();
reportParameters.Add(new ReportParameter("ParameterName", "Value"));
this.reportViewer.LocalReport.SetParameters(reportParameters);
One way would be to setup a parameter for each of the fields you want to bring in and set the value of the parameter to whatever you want in your C# app. In the report you would then set the value of each text box to be the parameter and it should work just fine.
Or if you are using RDLC files (which you are) you could put your data into a dataset and pass that to the report and then have each field in the report a column in the dataset
1) Create parameter in RDLC Report.
2) Place the parameter Where you want in the RDLC Input Textbox property.
3) Type the below code in Reprot.cs page.
4) Passing the parameter value where you redirect the Report page.
ReportParameter[] parms = new ReportParameter[n];
parms[0] = new ReportParameter("param_name", textbox(n-1).text);
parms[1] = new ReportParameter("param_course", textbox(n).text);
this.reportViewer1.LocalReport.SetParameters(parms);
this.reportViewer1.RefreshReport();
following method worked for me i used vb.net2010
1: In Visual Studio 2010, open your .rdlc file, and open “Report Data” window (If you can not see this window, go to View menu to open it);
2: Right click the “Parameters” node, and add a new Parameter, ie: named it “startdate“;
3: In your .rdlc file, add a textbox, named it tbContent, and set its filed express to :
=Parameters!startdate.Value
4: Go to your Form file which include your reporterview control, and add the following code:
Dim rptparameter As ReportParameter
rptparameter = New ReportParameter("content", txt_startdate.Text)
rv_param.LocalReport.SetParameters(New ReportParameter() {rptparameter})
rv_param.LocalReport.Refresh()
I'm taking a look now to XtraReports reporting tool and there's something that I don't get it yet.
How do I set the data source for a certain field (showed in the report as a Label I guess), without having to build a connection, adapter and dataset at design time but doing it programatically.
For example, I can have a table called "User" with 3 fields: UserId, Username and Password.
In the report designer I place 3 labels (and here's my question) set the datasource for showing the 3 database fields.
Then, in the code behind, I create a connection, execute a command, fill a dataset, create a report instance, pass the datatable to it and show the report preview.
Is this possible? Let me know if it isn't clear enough.
Thanks!
You could set your Report's DataSourceSchema property to an XML schema that represents your DataSource. That will let you use the Report Designer to set your data bindings at design time without establishing a connection to the database each time.
Here's how I do it:
Once I have my report query mostly finalized, I run the code once with a call to
myDataSet.WriteXml("C:\myDataSourceSchema.xml", System.Data.XmlWriteMode.WriteSchema)
Then in the report designer I set the Report's DataSourceSchema property to the newly created file. This will populate the Report Designer's Field List tab so you can bind at design time. That way you only have to have a valid data source once (or any time you change your columns). You can definitely still do Przemaas's approach and do all of your data bindings in code, but I prefer to let the designer handle most of the work.
Building a report without a dataset, you would use an IList object ... so follow this nice tutorial
How to: Bind a Web Report to an Array List
https://documentation.devexpress.com/#XtraReports/CustomDocument3851
Yes, it is possible. You can define necessary databindings in the code:
this.xrLabel1.DataBindings.Add(new DevExpress.XtraReports.UI.XRBinding("Text", data, "Name", "aaa"));
Text here is property on the XrLabel
class. I assume that you want to
display bound field as text in label.
data is your object with data
"Name" is name of field that you want to display
"aaa" is display format, applicable in case you want to display values with custom formatting
Basically databindings in XtraReport act pretty much the same way as standard windows forms databindings.
Let me know is you need more guidelines
Here is an alternate..
rtpObject.DataSourceSchema = dataSet.GetXmlSchema();
before doing this set modifier property as public
InvoicePrinting_Rpt InvoicePrintingRpt = new InvoicePrinting_Rpt();//report object
InvoicePrintingRpt.BillDetails.Report.DataSource = ds_Invoice;
InvoicePrintingRpt.Report.DataMember = ds_Invoice.Tables[0].TableName;
//bellow third parameter as your column name.
InvoicePrintingRpt.lbl_BillHead.DataBindings.Add("Text", null, "BILL_DESCRIPTION");
InvoicePrintingRpt.lbl_Det_Date.DataBindings.Add("Text", null, "TRANSACTION_DATE");
InvoicePrintingRpt.lbl_ISINCode.DataBindings.Add("Text", null, "ISIN_CODE");
ReportViewer1.Report = InvoicePrintingRpt;//assign report obj
ReportViewer1.Report.Name = "DevExpress_Reports.InvoicePrinting_Rpt";
ReportViewer1.DataBind(); //binding
XRBinding binding = new XRBinding("Text", ageingBindingSource, "ageing_contactsLookup.name");
this.xrLabel19.DataBindings.Add(binding);
// or //
XRBinding binding = new XRBinding("Text", dbaDataSet, "transactions.fk_transitems_transactionid.name2");
this.xrTableCell1.DataBindings.Add(binding);