I am getting this error : "Error 102 : non-boolean type specified in a context where a condition is expected" for this request :

private void button2_Click(object sender, EventArgs e) { con.Open(); SqlCommand cmd = con.CreateCommand(); cmd.CommandType = CommandType.Text; cmd.CommandText = "delete from MYDB where First name='" + first.Text + "'"; cmd.ExecuteNonQuery(); con.Close(); disp_data(); MessageBox.Show("Contact deleted successfully"); }