Mega Code Archive
Determining the Number of Records Returned in a DataReader
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/*
CREATE PROCEDURE Person.GetContacts
@RowCount int OUTPUT
AS
SET NOCOUNT ON
SELECT * FROM Person.Contact
set @RowCount = @@ROWCOUNT
RETURN @RowCount
*/
using System;
using System.Data;
using System.Data.SqlClient;
class Program
{
static void Main(string[] args)
{
string sqlConnectString = "Data Source=(local);Integrated security=SSPI;Initial Catalog=AdventureWorks;";
string sqlSelect ="SELECT COUNT(*) FROM Person.Contact; SELECT * FROM Person.Contact;";
using (SqlConnection connection = new SqlConnection(sqlConnectString))
{
SqlCommand command = new SqlCommand(sqlSelect, connection);
connection.Open( );
SqlDataReader dr = command.ExecuteReader( );
dr.Read( );
Console.WriteLine(dr.GetInt32(0));
dr.NextResult( );
int count = 0;
while (dr.Read( )){
count++;
}
Console.WriteLine(count);
dr.Close( );
command = new SqlCommand("Person.GetContacts", connection);
command.CommandType = CommandType.StoredProcedure;
command.Parameters.Add("@RowCount", SqlDbType.Int).Direction =ParameterDirection.Output;
dr = command.ExecuteReader( );
dr.Close( );
Console.WriteLine("Record count, using @@ROWCOUNT = {0}",command.Parameters["@RowCount"].Value);
}
}
}
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