datagridview value to date time picker

Question

i am trying to put the date from gridview into datetimepick.

 

this the error i got.

 

{"The string was not recognized as a valid DateTime. There is an unknown word starting at index 0."}

 

this the code is if you click the row it transfer the data in information field

 

private void dgvContList_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)

{

this.dtpStart.Value = Convert.ToDateTime(dgvContList.SelectedRows[0].Cells[3].ToString());

this.dtpEnd.Value = Convert.ToDateTime(dgvContList.SelectedRows[0].Cells[4].ToString());

}