How to return all records when passed parameter is null

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var exp = ProjectDomains.Where(s => s.FKProjectId == projid && s.DomainEnvironment == Environment )
In above linq query "projid ","Environment " values are passing from user .if either one of the values passed null.I want the filter with passed parameter only neglecting null parameter.
How can i achieve this?

Posted 9-Jun-15 1:32am

Venkata Durga Rao

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Kornfeld Eliyahu Peter · Accepted Answer · 2015-06-09T01:40:00

Solution 1

C#

(projid is null || s.FKProjectId == projid) && (Environment is null || s.DomainEnvironment == Environment)

Posted 9-Jun-15 1:40am

Kornfeld Eliyahu Peter

Comments

Venkata Durga Rao 10-Jun-15 6:51am

from p in db.ProjectDomains where (p.FKProjectId == projid || projid is null) select p;

when am trying this "Type Expected" issue raises in place of null

Kornfeld Eliyahu Peter 10-Jun-15 6:58am

Sorry...I mixed C# and SQL a bit (a lot)...
It should be projid == null instead of projid is null

Venkata Durga Rao 10-Jun-15 10:10am

Tnx