Practice Exercises C# Sharp - Learn to program with performing exercises C# Sharp

Practice Exercises C# Sharp

Learn to program with performing exercises C# Sharp

Database creation - Practice Exercises C# Sharp

Lesson 10:

Access to relational databases

Exercise 10.1:

Database creation


Create a program to ask the user for data about books (title, author, genre and summary) and store them in a SQLite database.

Source Code:

using System;
using System.Data.SQLite;
using System.IO;
public class DatabaseCreation
    static void Main(string[] args)
        SQLiteConnection conexion;
        SQLiteCommand cmd;
            conexion = new SQLiteConnection
                ("Data Source=ejemplo01.sqlite;Version=3;" +
                " New=True; Compress=True;");

            if (!File.Exists("ejemplo01.sqlite"))
                string creacion = "create table books ("
                + " title varchar(50), autor varchar(50)," +
                " genre varchar(50), summary varchar(50))";
                cmd = new SQLiteCommand(creacion, conexion);

            string line;
            string title = "",
                   autor = "",
                   genre = "",
                   summary = "";
                Console.Write("Title: ");
                line = Console.ReadLine();
                if (line != null)
                    title = line;

                Console.Write("Autor: ");
                line = Console.ReadLine();
                if (line != null)
                    autor = line;

                Console.Write("Genre: ");
                line = Console.ReadLine();
                if (line != null)
                    genre = line;

                Console.Write("Summary: ");
                line = Console.ReadLine();
                if (line != null)
                    summary = line;

                string insercion = "insert into books values ('" + title +
                    "', '" + autor + "','" + genre + "', '" + summary + "')";

                cmd = new SQLiteCommand(insercion, conexion);

                Console.WriteLine("Insert OK!");
            while (line != null);
        catch (Exception e)
            Console.WriteLine("Error" + e.Message);
Exercisey 10.1

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