How to get datagridviewcheckboxcolumn value c#?

Question

In my window form application I have a datagridview which has a checkbox column I want to retrieve its value is checked or not I attempted

    if ((bool)dataGridView1[columnindex,rowindex].Value ==true )
{
   MessageBox.show ("checked");
 }

but it doesn't work please answer me

Answer 1

This should works fine:

var value = dataGridView1[columnindex, rowindex].Value

So if you said "it doesn't work" - than just you need to provide us more information about error you got, etc.