IsNull is not working

[Shelly Bay]

Apologies. I am not an experience programmer so I suspect this is a very simple problem. I am trying to get a piece of code in VB for Access to recognise a null set but unfortunately the test is returning False for IsNull even though I know no records have been found in the table, eg.

strFeriados = "SELECT tlkpFeriados.* FROM tlkpFeriados WHERE ((tlkpFeriados.Fecha)=#" & CDate(MyDate)& "#);"                                          
 
If IsNull(strFeriados) = False Then
 
 

In other words, there is no record in tlkpFeriados which matches the value of MyDate that I am passing to the sql string yet IsNull is still returning False.

Is the test affected by the format of the date value passed to the string?

Please could someone advice me?

Many thanks in advance!

SB

[vb5prgrmr]

Okay, looks like a common mistake you are making...

What you want to do it to test the date and just the date. You do not want to test the string variable because it will always return false as you are doing something like...

strSQL = "Test " & vbNull & "Line"
 

and thus the string is not empty (IsEmpty) either as it contains a string value...

Now, from the looks of it you are actually wanting to test the results returned from executing your query to see if you have any records, which you can do by testing the recordcount property, the bof, and eof properties...

if Rs.RecordCount <> 0 And Rs.EOF = False And Rs.BOF = False Then
  'have records
Else
  'No Records
End If
 

Good Luck

[QVeen72]

Hi,

You Need to open the recordset ... and check results of recordset

[Shelly Bay]

That works! Many thanks.