How to get data with wildcard search for mobilenumber which bigint/int number in C#?

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I want to search data based on number whihc is contains search numbers in linq or lamdaexperssion

data is below

Id Name ContactNumber

1  A    9043484888
2  B    8938938983


select * from contactDetails where number like '%484%'

What I have tried:

select * from contactDetails where number like '%484%'
Search value 484

var result = details.Where(e=>e.ContactNumber.ToString().Contains(searchvalue)).ToList

Posted 3-Oct-18 23:58pm

DGKumar

Updated 4-Oct-18 0:47am

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F-ES Sitecore 4-Oct-18 6:05am

Don't store phone numbers as number types, they're not numbers. Storing as a number is going to give you many different problems in the future, it is vital you use appropriate types. Change the field to a varchar or nvarchar as appropriate.

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OriginalGriff · Answer 1 · 2018-10-04T00:47:00

Always store phone numbers in string datatypes: they aren't numbers because you can't do any maths with them: what is your phone number plus my phone number? What would it possibly be?

In addition, phone numbers aren't just digits: +44 (0777) 777 7777 is a valid phone number format - the +44 indicates it's a UK number, the (0777) is an area code within the UK, and the spaces make it easier for humans to read. You can;t store any of that in a numeric value!

When you store them as strings, you can use LIKE on them, but not with numbers.