We had a requirement of creating an InfoPath form that would use a repeating table and to do certain calculations on the values in rows of the repeating tables and display the result in a separate section.

Here is a screen shot of the same !

So above here, based on activity selected and time spent specified for it, the Total hours and Total days ( total hours/ 8) needs to be calculated.

Here is the sample code for that

public void group7_Changed(object sender, XmlEventArgs e)
       {
           // Create an XPathNavigator from the main data source
           XPathNavigator domNav = MainDataSource.CreateNavigator();
           // Create an XPathNodeIterator to iterate through all the rows
           XPathNodeIterator rows = domNav.Select(
           "/my:myFields/my:group6/my:group7", NamespaceManager);
           // Create Navigator for each of the fields where total needs to be displayed
           XPathNavigator lblTotalSpecHours = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblSpecHours", NamespaceManager);
           Int32 intTotalSpecHours = 0;
           XPathNavigator lblTotalConsultancyHours = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblTotalConsulHours", NamespaceManager);
           Int32 intTotalConsultancyHours = 0;
           XPathNavigator lblTotalDevelopmentHours = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblTotalDevHours", NamespaceManager);
           Int32 intTotalDevelopmentHours = 0;
           XPathNavigator lblTotalTestingHours = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblTotalTestingHours", NamespaceManager);
           Int32 intTotalTestingHours = 0;
           XPathNavigator lblTotalDeploymentHours = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblTotalDepHours", NamespaceManager);
           Int32 intTotalDeploymentHours = 0;

           // loop through all the rows of repeating table
           while (rows.MoveNext())
           {
               // Get values for Activity dropdown field and Time Spent field
               string fldActivity = rows.Current.SelectSingleNode(
               "my:ddlActivity", NamespaceManager).Value;
               string fldTimeSpent = rows.Current.SelectSingleNode(
               "my:txtTimeSpent", NamespaceManager).Value;                 

               if (fldActivity == "Specification" && fldTimeSpent!="")
               {
                   intTotalSpecHours += Convert.ToInt32(fldTimeSpent);                       
               }

               if (fldActivity == "Consultancy" && fldTimeSpent != "")
               {
                   intTotalConsultancyHours += Convert.ToInt32(fldTimeSpent);
               }

               if (fldActivity == "Development" && fldTimeSpent != "")
               {
                   intTotalDevelopmentHours += Convert.ToInt32(fldTimeSpent);
               }

               if (fldActivity == "Testing" && fldTimeSpent != "")
               {
                   intTotalTestingHours += Convert.ToInt32(fldTimeSpent);
               }
               if (fldActivity == "Deployment" && fldTimeSpent != "")
               {
                   intTotalDeploymentHours += Convert.ToInt32(fldTimeSpent);
               }          

           }

           // for Specification
           RemoveNilAndSetHours(lblTotalSpecHours, intTotalSpecHours);
           XPathNavigator lblTotalSpecDays = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblSpecDays", NamespaceManager);
           RemoveNilAndSetDays(lblTotalSpecDays, intTotalSpecHours);       

           // for Consultancy
           RemoveNilAndSetHours(lblTotalConsultancyHours, intTotalConsultancyHours);
           XPathNavigator lblTotalConsultancyDays = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblTotalConsulDays", NamespaceManager);
           RemoveNilAndSetDays(lblTotalConsultancyDays, intTotalConsultancyHours);

           //// for Development
           RemoveNilAndSetHours(lblTotalDevelopmentHours, intTotalDevelopmentHours);
           XPathNavigator lblTotalDevelopmentDays = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblTotalDevDays", NamespaceManager);
           RemoveNilAndSetDays(lblTotalDevelopmentDays, intTotalDevelopmentHours);

           //// for Testing
           RemoveNilAndSetHours(lblTotalTestingHours, intTotalTestingHours);
           XPathNavigator lblTotalTestingDays = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblTotalTestingDays", NamespaceManager);
           RemoveNilAndSetDays(lblTotalTestingDays, intTotalTestingHours);

           //// for Deployment
           RemoveNilAndSetHours(lblTotalDeploymentHours, intTotalDeploymentHours);
           XPathNavigator lblTotalDeploymentDays = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:lblTotalDepDays", NamespaceManager);
           RemoveNilAndSetDays(lblTotalDeploymentDays, intTotalDeploymentHours); 
       }

       // RemoveNil for the fields and set value
       public void RemoveNilAndSetDays(XPathNavigator xpathNav, int totalHours)
       {
           if (xpathNav.MoveToAttribute("nil", "http://www.w3.org/2001/XMLSchema-instance"))
               xpathNav.DeleteSelf();
           int days = totalHours / 8;
           xpathNav.SetValue(days.ToString());
       }

       public void RemoveNilAndSetHours(XPathNavigator xpathNav, int totalHours)
       {
           if (xpathNav.MoveToAttribute("nil", "http://www.w3.org/2001/XMLSchema-instance"))
               xpathNav.DeleteSelf();
           xpathNav.SetValue(totalHours.ToString());
       }

 

 

Change the extension of the file from .doc to .xsn !!!

Bye..