Of course. I started with this article: http://www.codeproject.com/KB/dotnet/Espresso.aspx which is very very interesting. If you are registered, you can download a full working demo and all the sources. I used the JNI.NET.Bridge.dll and the minijavart.dll from that article. Basically, you need to write a Java class to produce your report. This is the very basic example I used: import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.util.HashMap; import net.sf.jasperreports.engine.JRException; import net.sf.jasperreports.engine.JasperCompileManager; import net.sf.jasperreports.engine.JasperExportManager; import net.sf.jasperreports.engine.JasperFillManager; import net.sf.jasperreports.engine.JasperPrint; import net.sf.jasperreports.engine.JasperReport; import java.util.Map; import javax.swing.plaf.synth.Region; public class BeJasper { public BeJasper () { } public static void print(String report, String pdf) { Connection connection; JasperReport jasperReport; JasperPrint jasperPrint; try { Class.forName("org.postgresql.Driver"); System.out.println("loading drivers..."); connection = DriverManager.getConnection("jdbc:postgresql://192.168.100.5:5432/d2000","postgres","mypass"); jasperReport = JasperCompileManager.compileReport(report); // set here your parameters Map parameters = new HashMap(); /* java.util.Date dataDa = new java.util.Date(); java.util.Date dataA = new java.util.Date(); parameters.put("dataDa", dataDa); parameters.put("dataA", dataA); parameters.put("impianto", 8); */ jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, connection); JasperExportManager.exportReportToPdfFile(jasperPrint, pdf); } catch(JRException jrException) { jrException.printStackTrace(); } catch (ClassNotFoundException classNotFoundException) { classNotFoundException.printStackTrace(); } catch (SQLException sqlException) { sqlException.printStackTrace(); } } } What we're trying to do, now, is to be able to call BeJasper.print("myReport.jrxml", "result.pdf") from our c# application. Download (and study) the article I suggested you then modify the code to map the Java code listed above. The C# code is quite long, so I'm posting here only the essential public class Prog : JObject { readonly static JMethod _print; static Prog () { clazz = JClass.ForName ("BeJasper"); _ctr = clazz.GetConstructor (); _print = clazz.GetStaticMethod ("print", "(SS)V"); } public virtual void print(string report, string pdf) { _print.CallVoid (report, pdf); } In your app.conf you will also need to specify the right classpath, which in my case is <java.class.path value=".;C:dataprgeclipseBeJasperbin;C:ProgrammiJavajre1.5.0_15librt.jar;C:ProgrammiJavajre1.5.0_15libjsse.jar;C:ProgrammiJavajre1.5.0_15libjce.jar;C:ProgrammiJavajre1.5.0_15libcharsets.jar;C:ProgrammiJavajre1.5.0_15libextdnsns.jar;C:ProgrammiJavajre1.5.0_15libextlocaledata.jar;C:ProgrammiJavajre1.5.0_15libextsunjce_provider.jar;C:ProgrammiJavajre1.5.0_15libextsunpkcs11.jar;C:ProgrammiiReportlibmysql-connector-java-3.1.11-bin.jar;C:Programmijasperreportsdistjasperreports-2.0.5.jar;C:Programmijasperreportslibitext-1.3.1.jar;C:Programmijasperreportslibjdt-compiler-3.1.1.jar;C:Programmijasperreportslibcommons-beanutils-1.7.jar;C:Programmijasperreportslibcommons-collections-2.1.jar;C:Programmijasperreportslibcommons-digester-1.7.jar;C:Programmijasperreportslibcommons-javaflow-20060411.jar;C:Programmijasperreportslibcommons-logging-1.0.2.jar;C:Programmijasperreportslibcommons-logging-api-1.0.2.jar;C:ProgrammiEclipsepluginsorg.eclipse.core.commands_3.3.0.I20070605-0010.jar;C:ProgrammiEclipsepluginsorg.eclipse.equinox.common_3.3.0.v20070426.jar;C:ProgrammiPostgreSQLjdbcpostgresql-8.2-506.jdbc3.jar;C:dataprgjasperd2000extensionsMyUtil.jar"/> (MyUtil.jar is a helper class I wrote which is included in my reports) I got crazy with classpath, so I adopted this solution: I created a libraries.jar containing all the jars needed for JR (find here a list http://www.jasperforge.org/jaspersoft/opensource/business_intelligence/jasperreports/requirements.html or use the classpath I wrote above); doing that, deployment of your application is much easier and you'd need just to write <java.class.path value=".;./libraries.jar"/> After all that, all you need to generate a report is something like Prog jasperBride = new Prog(); jasperBride.print("sold.jrxml", "result.pdf"); // You can also use parameters, if you write a suitable method jasperBride.print("sold2.jrxml", "result.pdf", parameters); I'm very sorry this is still very confusing: actually, I got this result yesterday night and I'm still working on a cleanup. I'm going to publish a dll with all that's needed (and may be clear and detailed article too) so if your interested, please keep in touch (my email is jeenajeena (at) hotmail.com) Post edited by: jeenajeena, at: 2008/03/28 11:06 Post edited by: jeenajeena, at: 2008/03/28 11:13
