InfoPath Dev

hello! I have created some code in C# to check ranges in the fields of the infopath form. I have it published on sharepoint. When I run it on my computer the code runs fine, but when one of my users does it, he gets this error message (it worked fine for him also but only for a few days then he started geting this. Not sure what is going ...

XPathNavigator myNav = MainDataSource.CreateNavigator();XPathNodeIterator NodeIterator = myNav.Select("/my:myFFIM_base_table/my:Species_Records/my:SpeciesGroup/my:GROUP_1MM/my:GROUP_1MM_sub", NamespaceManager);   string temp_species = String.Empty;int temp_value = 0; string species = String.Empty;string CountOneM = ...

Thank you for your reply. That seems to work except I can only access the values of the first row repeatedly. In other words it does run multiple times through the rows of data, but only gives me the values of the first row. Any ideas to why is that? Thank you very much.

I have another question, how do I reference the values of COUNT_1CM, TOTAL_LENGTH_1CM under GROUP_1CM/group( in the data source shown above) before going to the next species ?? so basically running through all the 1mm 1cm and 2cm values before going to the next specie. Thank you very much for the help.  

I am so sorry I missed that detail. BUT, it works as you suggested . THANK YOU VERY MUCH!!!!!!!!!  I am so releived, it was driving me crazy.

XPathNavigator myNav = MainDataSource.CreateNavigator(); XPathNodeIterator NodeIterator = myNav.Select("/my:myFFIM_base_table/my:Species_Records/my:SpeciesGroup/my:GROUP_1MM/my:GROUP_1MM_sub", NamespaceManager);string species = String.Empty; string CountOneM = String.Empty;string LengthOneM = String.Empty; string WeightOneM = ...

The issue is that it always gives me the first specieID, it does not move to the next one.

ok, so the data source of this part of the form looks something like this: Repeating section:  -Species Record      Species_ID         -Group_1mm            ...

I appreciate the quick reply. Xpath was my first choice actually, but the reason I am using datasets is that I need to check values in repeating sections. The repeating section includes repeating rows and one single field  which are related and I need to check them that way. When I used Xpath all the rows (from all the repeating sections we ...

Greetings, I am new in writting code for Infopath.  I have an infopath form for which I am writing some code in C# to check the data entered into it before the form is saved. In order to check that data I am trying to create a data set, but I don't know how since I dont have the file name to pass it to ReadXml(). Can someone PLEASE help ...