LINQ OR operator not giving result

Question

I have written a LINQ query with or condition in it, but its not working, it seem I am doing something wrong.

I am passing a string value and on it, I want to get my result.

var userDetails = context.tbl_members.Where
                (
                  d => d.Mobile == value 
                  || 
                  d.MemberId == Int32.Parse(value)
                ).SingleOrDefault();

its not working if someone put a mobile no, but if work with memberID

if I split the query keep only mobile no its running fine.

var userDetails = context.tbl_members.Where(d => d.Mobile == value ).SingleOrDefault();

Please check what I did wrong with or condition

Regards Moksha

Answer 1

var userDetails = context.tbl_members
                         .Where(d => d.Mobile == value || 
                                     d.MemberId == Int32.Parse(value))
                         .SingleOrDefault();

It looks like you are using Linq to Entities or Linq to Sql. Int32.Parse() is not supported in that context - just do the number conversion before your query:

int numValue = Int32.Parse(value);
var userDetails = context.tbl_members
                         .Where(d => d.Mobile == value || d.MemberId == numValue)
                         .SingleOrDefault();

Answer 2

thanks for your help brokenGlass,

the error was in converting from string to int, as I was passing string of 10 digits, it was not getting converted into int

Value was either too large or too small for an Int32.

thanks