c# - DateTimePicker value from DataGridView -

i have textboxes , datetimepicker. there datagridview on it. upload data mysql table. want modify data via textboxes , datetimepicker, error:

system.argumentoutofrangeexception

on datetimepicker.value row:

private void datagridview1_selectionchanged(object sender, eventargs e) {   datetimepicker1.value = convert.todatetime(datagridview1.selectedrows[0].cells[1].value);    idotextbox.text = datagridview1.selectedrows[0].cells[2].value.tostring();   pkcombobox.text = datagridview1.selectedrows[0].cells[3].value.tostring();   minositesbox.text = datagridview1.selectedrows[0].cells[4].value.tostring();   esetextbox.text = datagridview1.selectedrows[0].cells[5].value.tostring();   fotextbox.text = datagridview1.selectedrows[0].cells[6].value.tostring();   megjegyzestextbox.text = datagridview1.selectedrows[0].cells[7].value.tostring(); } 

what did wrong?

you don't have row selected, cell.

make sure have correct selectionmode property set:

datagridview1.selectionmode = datagridviewselectionmode.fullrowselect; 

also, make sure have selected rows:

if (datagridview1.selectedrows.count > 0) {   datetimepicker1.value = convert.todatetime(datagridview1.selectedrows[0].cells[1].value);   // ... }