Send null to parameters by asp.net

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hi I want a parameter that its content is null sending to the parameter in sql?????
example

SQL

declare @camera bit;declare @os bit;
set @camera=1;set @os=null;
select * from tproduct where camera=@camera OR (os=@os)

Response.Redirect("Finder.aspx?camera=1&os=");// problem

SQL

How much @os I put it null and send

Posted 19-Mar-14 6:59am

Farhad Mirshekar

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Accepted Answer · 2014-03-19T07:05:00

Solution 1

Just do as you are doing and read the value of os on Finder.aspx page.
You will find that as blank/null. So, send accordingly.

No need to pass null in parameter,

Posted 19-Mar-14 7:05am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Abhinav S · Accepted Answer · 2014-03-19T08:24:00

Solution 2

set @camera=1;set @os=null;
You are setting @os to null in the SP.

SO no matter what you send via the web pages, you will be running against null in the query.

Posted 19-Mar-14 8:24am

Abhinav S