ASP hint Invalid use Null:replace

Replacing the data read in the database with replace, if the field is not empty is normal, but if

The following prompts appear when you are empty:

Microsoft VBScript run-time error ' 800a005e '

Invalid use Null: ' Replace '

The main problem is that SQL Server's field is null, so it's not easy to judge for NULL, you can only use IsNull

You can judge first.
If IsNull (RS ("Coutent")) =false Then
Response.Write ("null")
Else
Response.Write Replace (RS ("Coutent"), Chr ("<br/>")
End If

Test:

The code is as follows:
If IsNull (keyword) =true then keyword=dxy_title
If IsNull (descriptions) =true then Descriptions=dxy_title