Multiple rows printing from database
Pregunta
After querying for data from a database I used the datareader to fill an array. as the following.
connection.Open();
System.Data.SqlClient.SqlDataReader reader = command.ExecuteReader();
reader.Read();
_firstname = reader[0].ToString();
_Year = reader[1].ToString();
_coursename = reader[2].ToString();
_credits = reader[3].ToString();
_mark = reader[4].ToString();
_firstname2 = reader[5].ToString();
reader.Close();
I But the result show as below
1 - Sam Bons
2- 2012
3- DDD
4- 3
5- 80
How can I perform a loop to get all the results from the DB and print it out ?
thank you
I did it as so Thank you Ann
result = string.Empty;
int counter = 1;
while (reader.Read())
{
_firstname = reader[0].ToString();
_Year = reader[1].ToString();
_coursename = reader[2].ToString();
_credits = reader[3].ToString();
_mark = reader[4].ToString();
result += string.Format("{5} - {0}{1}{2}{3}{4} </br> ",
_firstname,
_Year,
_coursename,
_credits,
_mark,
counter);
counter++;
}
Response.Write(result);
reader.Close();
Solución
First off, you're not actually putting anything in an array, as you stated. You're just setting what look to be local variables.
If your question is about the syntax of a loop, it would be like this:
while(reader.Read())
{
// set your variables
// do something with the variables
}
Put that between your ExecuteReader call and your reader.Close() call.
Licenciado bajo: CC-BY-SA con atribución
No afiliado a StackOverflow