title: Access Vba - To find null and blank values
body: <p>I am trying to find the blank values and null values in a table. I am using <code>Asc</code> to assign the values of the table to a variable and then based on their ASCII values differentiating null and blank. But I am getting <code>"runtime error 94: Invalid use of null"</code> when the code tries to read the ASCII value of a null field.</p>