disabling threestate of checkbox in datagrid (datacolumn)

[Steven]

How can I disable the ThreeState of a checkbox in a datagrid datacolumn
(dataset)?

Because of the ThreeState the checkboxes in my datagrid can be in the states
'Checked', 'Unchecked', and 'Indeterminate' (checked + shaded).
I want to prevent the checkbox (datacolumn) from getting this last state.

How can this be done??

Thanks! Steven

 

[Dominique Vandensteen]

set the AllowDBNull property of the DataColumn to false


Dominique

 

[Steven]

Dominique,

Thanks for your answer!
That does solve the problem, but partially...
The indeterminate-state can still be selected/checked,
but when focus moves away from the checkbox,
a message appears that announces that the value is
incorrect and will be corrected.

So the AllowDBNull restricts the field from getting
a Null-value, but doesn't prevent the user from setting
the checkbox to the indeterminate-state...

How can this (checkbox ThreeState) be disabled?

Thanks! Steven

 

[Dominique Vandensteen]

maybe try to set allownull property of the columnstyle
(datagridboolcolumn)