Argument 'Expression' cannot be converted to type 'DBNull'.

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Hi,
I am badly stuck with an error.
When I try to run my application and call a form (frmCashBook) from Menu.vb
It gives an error,

"Argument 'Expression' cannot be converted to type 'DBNull'"

It shows error at the line that is calling frmCashBook.vb
frmCashBook.Showdialog
frmCshbook contains datagridview, that loads data from database.

Please advise what is the problem.

Thanks
Furqan

Posted 1-Mar-11 0:47am

Furqan Sehgal

Updated 1-Mar-11 4:19am

Manas Bhardwaj

v2

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Comments

OriginalGriff 1-Mar-11 7:43am

Please show us the code it is complaining about...

Furqan Sehgal 1-Mar-11 9:17am

It complains about frmCashBook.Showdialog

R. Giskard Reventlov 1-Mar-11 10:21am

It is much more likely that the exception is being caused by whatever it is you are using to bind the gridview. Are you using a data control or binding from code behind?

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Piccadilly Yum Yum · Accepted Answer · 2011-03-01T04:38:00

Solution 1

You have one or more field in your database o value null , please initialize it or handle by code null values ...

Posted 1-Mar-11 4:38am

Piccadilly Yum Yum

Comments

Furqan Sehgal 4-Mar-11 11:53am

Thanks! I found the same.