I think that the .Net framework 3.0 or 3.5+ ships with a class named BigInteger that can fit your needs. There are a lot of similar free classes available (I beleave at least one in CodeProject and one in the mono project)

Iain Clarke wrote: You are going to be in trouble when the bulb breaks! :laugh: They are already somewhat unreliable (built in the 50s). Worst case, and has happened, I go to the 7th floor via the sub-basement. "Love people and use things, not love things and use people." - Unknown "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Thanks led mike

i also get the same error about System.Xml.dll somehow the idea to try dataset1.readxml(file.xml) datagrid1.datasource = dataset1 only gives me trouble if i cant load an xml from a file, how is it possible to get it from a web service and im starting to worry about that

Whaty ou do with the XML is entirely up to you. If those name attributes refer to properties of an object, odds are that .NET will define the object and you'll get back an instance of that object when you use .NET to talk to the web service. Christian Graus - Microsoft MVP - C++ Metal Musings - Rex and my new metal blog "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )