how to change the text fore color in datagrid view based on condition

See more:

C#

C#4.0

public void view_load_tenthclass_marks()
{
//this code for auto resize of columns
dataGridView3.AutoResizeColumns();
dataGridView3.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;


ConnectionStringSettings consettings = ConfigurationManager.ConnectionStrings["smssms"];
string connectionString = consettings.ConnectionString;
SqlConnection cn = new SqlConnection(connectionString);

SqlCommand sqlcmd = new SqlCommand();
SqlDataAdapter sda = new SqlDataAdapter();
DataTable dt = new DataTable();

cn.Open();
//pass query

sqlcmd = new SqlCommand(@"select * from tenthclass_marks ", cn);
sda = new SqlDataAdapter(sqlcmd);
//Fill the data in the SQL Data Adapter
sda.Fill(dt);
//Bind it in the DataGrid View
dataGridView3.DataSource = dt;
cn.Close();
}
this is my code for retrieving marks of all students.if student get <35 then that row colour should be change to another color .how to write ????