Setting report parameters via webiste code behind?

[Mark Jones]

Hi, can some-one please help me with the following issue re passing parameters.

I have created a new trivial report and setup two report parameters

1) StartDate (Type DateTime)
2) EndDate (Type DateTime)

What I would like to be able to do is set the report parameters from inside the codebehind of the webpage which will display the report.

e.g.

The report object is in a seperate class library called ProductOrders

 public partial class ProductOrders : Telerik.Reporting.Report
    {
            
        public ProductOrders()
        {                   
             try
            {
                this.dsAllOrdersTableAdapter1.Fill(this.dsAllOrders.dsAllOrdersTable);
            }
            catch (System.Exception ex)
            {
                // An error has occurred while filling the data set. Please check the exception for more information.
                System.Diagnostics.Debug.WriteLine(ex.Message);
            }
        }

}       


In another .NET website project I have a report viewer called ReportViewer1 and I have the following code

protected void Page_Load(object sender, EventArgs e)
{                
    // New instance of the ProductOrders report
       ProductOrders _report = new ProductOrders();

    
    // Set the report parameters here
       _report.ReportParameters["StartDate"].Value = Convert.ToDateTime("01-jun-2009");
       _report.ReportParameters["EndDate"].Value = Convert.ToDateTime("30-jun-2009");
                   
    // associate the report with report viewer
       ReportViewer1.Report = _report;
}

The problem that I am having is that the report paramaters are *always null* when I set them from the website page.
If I place them inside the constructor of the ProductOrders they work fine.
I do not want to pass through this information in the QueryString but would prefer to pass them through programatically. Again the above is a trivial example :)

Thanks in advance
Mark

[Steve]

Hello Mark,

Actually your code is correct and testing this on my end - it works correctly. So there must be something else that is causing the problem. Please provide more info on your scenario or a link to a sample project that exhibits the problematic behavior.

Kind regards,
Steve
the Telerik team

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[Peter]

This worked for me,  creating the parameter and doing  a .Parameters.Add(parameter);           

            var typeReportSource = new Telerik.Reporting.TypeReportSource();
            typeReportSource.TypeName = "Acme.Sales.APJ.ReportLib.Survey, ReportingLib";

            var param1 = new Telerik.Reporting.Parameter("SurveyID", Request["id"].ToString());
            typeReportSource.Parameters.Add(param1);

            var param2 = new Telerik.Reporting.Parameter("Name", Request["n"].ToString());
            typeReportSource.Parameters.Add(param2);

            this.ReportViewer1.ReportSource = typeReportSource;