If IsNull(Me!TextBox.Value) Then
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If Me.ControlName & ""="" then
Public Function IsNullOfBlank(SomeValue as Variant) as Boolean
IsNullOrBlank = (Trim(SomeValue & "") = "")
IF IsNullOrBlank(me.ControlName) then
the only time IsNull(me.TextBox) will return a NULL is if the field that TextBox is bound to is NULL.
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