C# datagridviewde arama

OleDbConnection baglan = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=veritabanıadı.accdb");

private void button1_Click(object sender, EventArgs e)
 {
 OleDbDataAdapter getir = new OleDbDataAdapter("Select * From tabloadı", baglan);
 baglan.Open();
 getir.SelectCommand.CommandText = "Select * From tabloadı" + " where(sutunad = '"+ textBox1.Text+"')";
 DataSet goster = new DataSet();
 getir.Fill(goster, "tabloadı");
 goster.Tables["tabloadı"].Clear();
 dataGridView1.DataSource = goster.Tables["tabloadı"];
 getir.Fill(goster, "tabloadı");
 baglan.Close();
 }