Select from data grid view

Question

This is in visual studio 2015, C# and MS Access database. I want to select from datagrid view not from database. How? Please code or example. 

 

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)

{

con = new OleDbConnection(conString);

string sql = "SELECT * FROM LalData WHERE SuspenceAccount like '" + comboBox1.Text + "%'";

con.Open();

adapter = new OleDbDataAdapter(sql, con);

dt = new DataTable();

adapter.Fill(dt);

dataGridView1.DataSource = dt;

dataGridView1.CurrentCell = dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells[0];

btnSubmit.Enabled = false;

con.Close();

}