Display ONLY the first record of datagrid from textbox on cl

Hi,

I wrote these codes to display the LAST row ONLY. Then how can I display ONLY the first row from textbox one click.

private void button_Click(object sender, EventArgs e)

{

string commandString = "select top 1 * from Test where name='" + txtNumber.Text ";

OleDbCommand sqlCmd = new OleDbCommand(commandString, sqlCon);

OleDbDataReader read = sqlCmd.ExecuteReader();

if (read.HasRows)

{

while (read.Read())

{

txtNumber.Text = read["number"].ToString();

}

else

{

MessageBox.Show("Name " + txtName.Text + " not found");

}

read.Close();

sqlCon.Close();