the value property of content of a datagridview cell?

hi friends,

a datagridview cell can have the following controls

1. DataGridviewTextBox

2. DataGridViewButton

3.DataGridViewCheckbox

4. DataGridViewLink

5. DataGridViewComboBox

6. DataGridViewImage

The Value Property of DataGridViewCheckBox will return the checked / uncheck state of the control. But what about the other controls, such as DataGridViewButton, DataGridViewComboBox what do their value property return?

In a DataGridViewComboBox does the value property return the selectedIndex?

thanks

I use Visual studio 2012 Ultimate and SQL server 2008 developer edition!