Reading with an SQLReader

This C# program demonstrates how to read data with an SQLReader in a database for Microsoft SQL in C#.

Program.cs

using System;
using System.Data.SqlClient;

namespace ReadingWithAnSqlDataReader {
    class Program {
        static void Main(string[] args) {
            Console.Write(ReadTableData("apostles"));
        }

        public static string ReadTableData(string sTable) {
            // The using block ensures that the connection is closed when it exits this block.
            using (SqlConnection qConnection = new SqlConnection(
                    @"Server=localhost\SQLEXPRESS01;Database=catholic;Trusted_Connection=True;")) {
                qConnection.Open();
                string sTableEntries = "";
                // The selection command
                using (SqlCommand qCommand = 
                	new SqlCommand("SELECT name FROM apostles", qConnection)) {
                    using (SqlDataReader qReader = qCommand.ExecuteReader()) {
                        // Read the next line, while available
                        while (qReader.Read()) {
                            // The count is the number of elements in each line, one in this case.
                            object[] qaValues = new object[qReader.FieldCount];
                            qReader.GetValues(qaValues);
                            // Run through the elements in each line, only one in this case
                            foreach (object qData in qaValues) {
                                sTableEntries += String.Format("{0,-20}", qData);
                            }
                            sTableEntries += "\n";
                        }
                    }
                }
                return sTableEntries;
            }
        }
    }
}

Output

John
Andrew
Peter
Press any key to continue . . .

Tables

Apostles Table