Passing parameters to report from .Net web form

[Greg]

Is it possible to pass parameters to a Telerik Report (linked to a Telerik:ReportViewer control) from a web page? Either via Javascript or from code behind?

I am able to do this for Silverlight via WCF and Javascript. I am hoping I can do somethign similar for Telerik Reporting.

[Elian]

Hi Greg,

Yes, you can do it like this (not necessarily in Page_Load, could be on any event, you just need to refresh the report after passing the new parameters, so the changes can take effect):

protected void Page_Load(object sender, EventArgs e)
       {
           var myReport = new TelerikChartLab.MyReport();
           ReportViewer1.Report = testReport;

           //this is what you need
           myReport.ReportParameters["Parameter1"].Value = "AAAAAAA";
           ReportViewer1.RefreshReport();
       }

Kind regards,
Elian
the Telerik team

[Dhyan]

Hi 
I've used the code below still i'm getting a error "Invalid value of report parameter 'VolID'.". I've defined a report parameter in the report as VolID ( integer) and left the value blank so that any value passed from the webform can be used by this parameter field. 
So if i hard code a value it displays the report it seems its not accepting the parameter passed from the web form. Can you tell me what i'm missing here. 

Telerik.Reporting.InstanceReportSource instanceReportSource = new Telerik.Reporting.InstanceReportSource();

instanceReportSource.ReportDocument = new MktTermReport.TermSheetReport();

this.ReportViewer1.ReportSource = instanceReportSource;

 

 

ReportViewer1.ReportSource.Parameters.Add("VoldId", 6841808);

 

ReportViewer1.RefreshReport();

[Elian]

Hi Dhyan,

The ReportSource parameters are not the same as Report parameters. In your case the solution is simple: 

var report = new MktTermReport.TermSheetReport();
var instanceReportSource = new Telerik.Reporting.InstanceReportSource();
instanceReportSource.ReportDocument = report;
this.ReportViewer1.ReportSource = instanceReportSource;
//instead of this: ReportViewer1.ReportSource.Parameters.Add("VoldId", 6841808);
//add this:
report.ReportParameters["VoldId"].Value = ...;
ReportViewer1.RefreshReport();

 
Kind regards,
Elian
the Telerik team

[Sean Drun]

Hi Elian,
I am evaluating Telerik Reporting and try to convert few of our in house reports.
I run into a problem. The report is a master - detail report.
Detail is Reporting.List inside report detail section.
I am trying to set ReportParameters["MyPara"].Value = myValue in the List.Panel.ItemDataBinding event.
But the assigned parameter is not known to textbox binding script, textBox.Value=Parameters.MyPara.Value.
I am using Web reportviewer.
Is it allowed to set report paramenter in the event handler?
If not, what is the alternatives?

Thanks,
Sean Drun

[Elian]

Hello Sean,

ReportParameters collection holds the parameters of the definition (or the default values).
The parameters on which the processing depends are obtained through the Telerik.Reporting.Processing.Report.Parameters collection. 
For example:

private void panel1_ItemDataBinding(object sender, EventArgs e)
{
    var panel= sender as Telerik.Reporting.Processing.Panel;
    panel.Report.Parameters["ParameterName"].Value =...
}

Why do you need to change the parameter's value run time? If you explain your scenario in more detail, we might be able to give you some advice on how to work it out.

It will be best you you attach a runnable sample report demonstrating your approach.
 
Regards,
Elian
the Telerik team

[Sean Drun]

Hi Elian,
Thanks for reply.
I found I have to set sender's Report.Parameters["paraName"].Value, not global Report.Parameters
after submit request.
The reason for changing parameter at run time is -
We need some kind of report variable that we can use to set value in Reporting.List's needdatasource.
When textboxes in List are binded, use that value to do some formating.
Report's paramenters seems like a variable to us, unless we overlook other Telerik Reporting features.

Thanks,
Sean Drun

[Saul]

How can i pass the hidden parameters to Telerik Reports?

I develop a Telerik Report with "Telerik report Tool" and it gives me a .trdx file so I integrated that report to my project with Uri; But now i want to pass some hidden parameters to this report 

How can i do this?

[Stef]

Hello Saul,

Please check my post in the How to pass parameter to ReportViewer forum thread on the same question.

Regards,
Stef
Telerik

[Abinash]

Hi,
How can we receive and display a string sended from visual studio.
Fro example i sended a string like
myReport.ReportParameters["Parameter1"].Value = "AAAAAAA";
so i want to display "AAAAAAA" in  telerik report header.
is it possible. if yes, please tell me the step?

[KS]

Hi,

Use the parameter in expression - http://www.telerik.com/help/reporting/expressions-property-values.html

-KS

[Support ATT]

[quote]Elian said:Hi Dhyan,

The ReportSource parameters are not the same as Report parameters. In your case the solution is simple: 

var report = new MktTermReport.TermSheetReport();
var instanceReportSource = new Telerik.Reporting.InstanceReportSource();
instanceReportSource.ReportDocument = report;
this.ReportViewer1.ReportSource = instanceReportSource;
//instead of this: ReportViewer1.ReportSource.Parameters.Add("VoldId", 6841808);
//add this:
report.ReportParameters["VoldId"].Value = ...;
ReportViewer1.RefreshReport();

 
Kind regards,
Elian
the Telerik team

 

 

[/quote]

hi Elian

can you please help me? I have same situation and i want to do like this

this.ReportViewer1.ReportSource = instanceReportSource;

but compiler dont like it : SeverityCodeDescriptionProjectFileLineSuppression State
ErrorCS0029Cannot implicitly convert type 'Telerik.Reporting.ReportSource' to 'Telerik.ReportViewer.Html5.WebForms.ReportSource'
i am using  Telerik Reporting R2 2020 Telerik.Reporting.dll File Version 14.1.20.618 , Telerik.ReportViewer.WebForms.dll same version.

 

can you please help me? 

Best Regards

ATT AG

[Peter]

Hi,

The WebForms ReportSource is of a different type. For more information on how to pass parameter value in the Telerik HTML5 Report Viewer see How to Pass Values to Report Parameters help article.

Regards,
Peter
Progress Telerik