combo box

[mroks via AccessMonster.com]

I don't get the point. If you'll creating the one as you stated below you're
creating another table which same as your table source. and of course if you
have a creating a source like below all the content of combo box were exist.

I suggest you to make a primary key for the uniqueness of every record.

 

[a]

Thank you

I have combo box

Control Source=

Row source type= table \query

row source = SELECT tblClient.IDClient FROM tblClient;



I want if the user type one of the IdClient in the combo box message box
appear ("the number you type already exists" )

 

[a]

Thank you for your answer
I don't want to create a table and primary key
I want to use just combo box without Control soure
I want if the user type one of the IdClient in the combo box message box
appear ("the number you type already exists" )