Opening a form that has DataGridView for Insert new record. I edit one cell in it and press Esc, it throw a Exception as "Column 'Column' does not allow nulls."
( DataGridView using TableAdapter, BidingSource, DataSet as Datasource of DGV - use wizard to add datasource for DGV )
Someone can tell me what it is ?? and how to handle this Exception ????

Thank you

Hi Jerry_lth,

I believe that there is one or more column that does not allow null value. You can check it out by loop through all columns and check the AllowDBNull property. Try the following code:

Hope this helps.
Best regards.
Rong-Chun Zhang

Hi Jerry_lth,

I believe that there is one or more column that does not allow null value. You can check it out by loop through all columns and check the AllowDBNull property. Try the following code:

Hope this helps.
Best regards.
Rong-Chun Zhang