how to check if a combobox is empty without setfocus?

i need to know if any text has been entered into a combobox

if i do:

If comboReason1.Value <> "" Then

it gives me an error, and if i do:

If comboReason1.Value <> Null then

this doesn't开发者_如何学Python work.

how do i check whether text has been entered into the combobox?

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If IsNull(comboReason1.Value) then

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I am not in a position test this quickly, but try

if comboReason1.Text<>"" then