Error compiling a c#-Prg. using mysql-connector-net (1 reply)

I try to use an c#-example of the mysql-connector-net documentation. But compiling the example I get the following error message:

ttt.cs(4,40): error CS0116: A namespace can only contain types and namespace declarations
ttt.cs(5,37): error CS0116: A namespace can only contain types and namespace declarations
ttt.cs(6,40): error CS0116: A namespace can only contain types and namespace declarations
Compilation failed: 3 error(s), 0 warnings


Code of the program:

MySql.Data.MySqlClient.MySqlConnection conn;
MySql.Data.MySqlClient.MySqlCommand cmd;
MySql.Data.MySqlClient.MySqlDataReader myData;

conn = new MySql.Data.MySqlClient.MySqlConnection();
cmd = new MySql.Data.MySqlClient.MySqlCommand();

string SQL;
UInt32 FileSize;
byte[] rawData;
FileStream fs;

conn.ConnectionString = "server=127.0.0.1;uid=root;" + "pwd=12345;database=test;";

SQL = "SELECT file_name, file_size, file FROM file";

try
{
conn.Open();

cmd.Connection = conn;
cmd.CommandText = SQL;

myData = cmd.ExecuteReader();

if (! myData.HasRows)
throw new Exception("There are no BLOBs to save");

myData.Read();

FileSize = myData.GetUInt32(myData.GetOrdinal("file_size"));
rawData = new byte[FileSize];

myData.GetBytes(myData.GetOrdinal("file"), 0, rawData, 0, FileSize);

fs = new FileStream(@"C:\newfile.png", FileMode.OpenOrCreate, FileAccess.Write);
fs.Write(rawData, 0, FileSize);
fs.Close();

MessageBox.Show("File successfully written to disk!","Success!", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);

myData.Close();
conn.Close();
}
catch (MySql.Data.MySqlClient.MySqlException ex)
{
MessageBox.Show("Error " + ex.Number + " has occurred: " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}