[DotNetDevelopment] SQL is null question

[julik]

Any way to replicate is null functionality using the "="?
I automatically set values in .NET code and everything is great only I
can't easily check for nulls b/c I feed variables into
" where P.ProjectPlatform = " +
ddlProjectPlatform.SelectedValue.ToString();

Any easy way to check if P.ProjectPlatform is null in the above
example using the "=" ?

Thank you.