how to add header name in console application in excel

Question

 My code as follows

 

string connectionString = ConfigurationManager.ConnectionStrings["Connectionstring"].ConnectionString;

SqlConnection sqlConnection = new SqlConnection(connectionString);

SqlCommand cmd = new SqlCommand();

SqlDataReader reader;

cmd.CommandText = "select * from customers";

cmd.CommandType = CommandType.Text;

cmd.Connection = sqlConnection;

sqlConnection.Open();

reader = cmd.ExecuteReader();

 

if (reader.HasRows)

{

using (System.IO.StreamWriter fileOutput = new System.IO.StreamWriter(@"C:\Users\551386\Desktop\DataDump\ "Excel.xls"))

 

{

while (reader.Read())

{

for (int i = 0; i < reader.FieldCount; i++)

{

fileOutput.AutoFlush = true;

fileOutput.Write(reader[i].ToString() + "\t");

}

}

fileOutput.Write("\n");

}

}

sqlConnection.Close();

}

when i write the above and run  in excel data will be download as follows

 

    1        suresh   988789899    chennai    IN    1

    2        rajeshr   988788799   chennai     IN    2

    3        mootrhi  988787699    chennai    Out  3

 

 select * from customers records as follows

 

 id         Name       Mobile          Place     Type    Cityid

1          suresh    988789899    chennai      IN     1

2         rajeshr     988788799    chennai      IN     2

3        mootrhi     988787699    chennai     Out    3

 

 

but in excel the above column name is not coming in excel when i download.

 

id         Name      Mobile     Place        Type     Cityid

 

the above column name is not showing in excel when i download. 

what is the mistake in my above code.