operator '&&' cannot be applied to operands of type "int?" and "int"

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C#

var data = (from m in ContextDb.Modules
           join itm in ContextDb.RoleAssignments on m.ModuleId equals itm.ModuleId && itm.RoleId = 2
           select new RoleAssignmentModel { RoleAssignmentId = itm.RoleAssignmentId, RoleId = itm.RoleId}).ToList();

i am having 3 tables of name tbl_Role, Modules and RoleAssignment. when i use the above query , got an error as -operator '&&' cannot be applied to operands of type "int?" and "int"
in ( itm.ModuleId && itm.RoleId = 2...).

Posted 31-Oct-13 1:06am

prthghosh999

Updated 31-Oct-13 1:24am

phil.o

v3

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Thomas ktg 31-Oct-13 7:11am

Try it with AND instead of &&.

prthghosh999 31-Oct-13 7:32am

Its a Linq Query. so i cant use AND instead of &&

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phil.o · Answer 1 · 2013-10-31T01:26:00

Solution 1

Try:

C#

var data = (from m in ContextDb.Modules
           join itm in ContextDb.RoleAssignments on (m.ModuleId == itm.ModuleId) && (itm.RoleId == 2)
           select new RoleAssignmentModel { RoleAssignmentId = itm.RoleAssignmentId, RoleId = itm.RoleId}).ToList();

Posted 31-Oct-13 1:26am

phil.o