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ASP FAQ Tutorials :: Classic ASP 1.0 :: General Topics :: How do I prevent 'Invalid use of Null' errors?
How do I prevent 'Invalid use of Null' errors?
When working with database or array values, you may have seen this:
To alleviate this error, instead of this:
Do this:
For database values, try preventing NULLs from coming out of the database in the first place. See Article #2073 and Article #2150 for more information.
| Microsoft VBScript runtime error '800a005e' Invalid use of Null: 'Replace' /<file>.asp, line <line> |
To alleviate this error, instead of this:
| <% x = replace(rs("x"), something, somethingElse) %> |
Do this:
| <% rsx = rs("x") if len(rsx) > 0 then x = replace(rsx, something, somethingElse) else x = "" end if %> |
For database values, try preventing NULLs from coming out of the database in the first place. See Article #2073 and Article #2150 for more information.
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