Error on Coding

[N Mohamed rafi]

Error:

the name cmd does not exist in current context

if(textBox9.Text!="" && textBox10.Text!= "")
{
string connectionString;
MySqlConnection cnn;
connectionString = @"Data Source=localhost;Initial Catalog=testDB;User ID=root;Password=mysql";
cnn = new MySqlConnection(connectionString);
string id = textBox9.Text;
string password = textBox10.Text;
textBox9.Text = "";
textBox10.Text = "";
string query = "select count (*) from login where userid='" + textBox9.Text + "' and password='" + textBox10.Text + "'";
int count = Convert.ToInt32(cmd.ExecuteScalar());
using (MySqlCommand cmd = new MySqlCommand(query))
if (count >= 1)
{
cmd.Parameters.AddWithValue("@userid", id);
cmd.Parameters.AddWithValue("@password", password);
cmd.Connection = cnn;
cnn.Open();
cmd.ExecuteNonQuery();
MessageBox.Show("Login Successfully");
cnn.Close();
this.Hide();
Form2 f2 = new Form2();
f2.ShowDialog();
}
else
{
MessageBox.Show("Please Enter Correct Login details");
}

        }
        else
        {
            MessageBox.Show("Please Enter Details to Login");
        }