Hi, i got same exception too.My primary key's type is double. It is not fix to type of Int32. So i can't use "number" type in the column definitions. Is there anyway to achieve this problem? I didn't find any documents. I hope somebody help us.

Hello,

I'm getting the same issue when loading igHierarchical child grid data.. As suggested on this post, i want to do load on demand child grid 

http://ko.infragistics.com/community/blogs/damyan_petev/archive/2012/02/15/jquery-hierarchical-grid-load-on-demand.aspx

and when it calls the getdata() method to return data for the child grid it throws an exception. Please let me know how to fix this problem.

And I'm using the latest version of jquery tools "http://cdn-na.infragistics.com/jquery/20121/2059/js/infragistics.loader.js"

Infragistics.Web.Mvc.ParseException was unhandled by user code
Message=No applicable method 'toLower' exists in type 'Int32'.
Source=Infragistics.Web.Mvc
Position=34
StackTrace:
at Infragistics.Web.Mvc.ExpressionParser.ParseMemberAccess(Type type, Expression instance)
at Infragistics.Web.Mvc.ExpressionParser.ParsePrimary()
at Infragistics.Web.Mvc.ExpressionParser.ParseUnary()
at Infragistics.Web.Mvc.ExpressionParser.ParseMultiplicative()
at Infragistics.Web.Mvc.ExpressionParser.ParseAdditive()
at Infragistics.Web.Mvc.ExpressionParser.ParseComparison()
at Infragistics.Web.Mvc.ExpressionParser.ParseLogicalAnd()
at Infragistics.Web.Mvc.ExpressionParser.ParseLogicalOr()
at Infragistics.Web.Mvc.ExpressionParser.ParseBLOCKED EXPRESSION
InnerException:

Hello Josh,

Please do not hesitate to contact me if you are still experiencing any issues.