如何将参数传递给在ASP.NET Web应用程序中具有对象数据源的本地报表？

Question

I want to pass parameters to local reports that have Object Data source(gets list of data from c#method that needs parameters) , how can I do that ?

    #region Parameterized Report
            ReportViewer1.ProcessingMode = ProcessingMode.Local;
            string FolderPath = Server.MapPath("~/LocalReports");
            string ReportName = "ParameterizedReportWizard.rdlc";
            string DataSetName = "DataSet1Parameter";
            string SelectedMethod = "GetSomeEmployees";
            string Parameter = "ID";

            ReportViewer1.LocalReport.ReportPath = Path.Combine(FolderPath, ReportName);
            ObjectDataSource objDataSource = new ObjectDataSource() { ID = DataSetName, TypeName = "BussinessLogic.Custom", SelectMethod = SelectedMethod};
            ReportParameter p1 = new ReportParameter("ReportParameter1", "1"); //I pass the same parameter name tha exist in report definition and it's value is on 1 as  static value for now

            this.ReportViewer1.LocalReport.SetParameters(new ReportParameter[] { p1});

            ReportDataSource datasource = new ReportDataSource(DataSetName, objDataSource);
            ReportViewer1.LocalReport.DataSources.Clear();
            ReportViewer1.LocalReport.DataSources.Add(datasource);

            #endregion

Answer 1

All data access for local reports should be performed before binding it to your report. If possible, filter at the source.

You need to add to the ObjectDataSource.SelectParameter collection.

string DataSetName = "DataSet1Parameter";
string SelectedMethod = "GetSomeEmployees";
string Parameter = "ID";

ObjectDataSource objDataSource = new ObjectDataSource() { ID = DataSetName, TypeName = "BussinessLogic.Custom", SelectMethod = SelectedMethod};
    objDataSource.SelectParameters.Add(new Parameter("id"));

then subscribe to the ObjectDataSource.Selecting event to set the parameter.

protected void objDataSource_Selecting
    (object sender, ObjectDataSourceSelectingEventArgs e)
{
    e.InputParameters["id"] = "1";
}