Write Farsi ( Persian ) in Access by Web form

[Pedram Rahimi]

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I have a new Host that do not working probably . In other Hosts I had not
any problem . In this one , I could not write Farsi data ( Unicode ) in Bank
by web form . According to my ASP source , maybe this server thinks these are
nul characters . Maybe this Host Can not support Farsi or Unicode :

Microsoft JET Database Engine error '80040e21'
Index or primary key cannot contain a Null value.

There is not this problem for English data . I'm looking for your Assist :
(e-mail address removed)
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[Pedram Rahimi]

I found it from this address :
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q257556
problem is in older version of MDAC ( Microsoft Data Access Component )
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