当前位置: 首页>>代码示例>>C#>>正文


C# SQLiteConnection.TableExists方法代码示例

本文整理汇总了C#中System.Data.SQLite.SQLiteConnection.TableExists方法的典型用法代码示例。如果您正苦于以下问题:C# SQLiteConnection.TableExists方法的具体用法?C# SQLiteConnection.TableExists怎么用?C# SQLiteConnection.TableExists使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Data.SQLite.SQLiteConnection的用法示例。


在下文中一共展示了SQLiteConnection.TableExists方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: Main

        /// <summary>
        /// Mains.
        /// </summary>
        /// <param name="args">The arguments.</param>
        static void Main(string[] args)
        {
            CommandBuilderFactory.Assign(mapper => new SqliteCommandBuilder(mapper));

            string cs = "URI=file:test.db";
            var connection = new SQLiteConnection(cs);
            connection.Open();

            if (!connection.TableExists("Users"))
            {
                using (var uow = new AdoNetUnitOfWork(connection))
                {
                    uow.Execute(
                        "CREATE TABLE Users (Id INTEGER PRIMARY KEY AUTOINCREMENT, FirstName TEXT, LastName text, CreatedAtUtc INTEGER)");
                    uow.SaveChanges();
                }
            }

            var users = connection.ToList<User>("firstName = @FirstName", new {FirstName = "Gau%"});

            try
            {
                var first = connection.First<User>(new {Id = 1});
            }
            catch (EntityNotFoundException x)
            {
                Console.WriteLine("Expected to find user, since First was used instead of FirstOrDefault. User friendly error message: " + x.Message);
            }


            // clear old data
            using (var uow = new AdoNetUnitOfWork(connection))
            {
                using (var cmd = uow.CreateCommand())
                {
                    cmd.CommandText = "SELECT * FROM Users";
                    cmd.AddParameter("id", "983498043903");
                    foreach (var entity in cmd.ToEnumerable<User>())
                    {
                        Console.WriteLine(entity.FirstName);
                    }


                }

                uow.Truncate<User>();
                for (int i = 0; i < 100; i++)
                {
                    uow.Insert(new User { FirstName = "Arne" + i });
                }

                uow.SaveChanges();
            }


            Console.WriteLine("Press ENTER to quit.");
            Console.ReadLine();

        }
开发者ID:jakubmacek,项目名称:Griffin.Framework,代码行数:63,代码来源:Program.cs

示例2: Main

        static void Main(string[] args)
        {
            CommandBuilderFactory.Assign(mapper => new SqliteCommandBuilder(mapper));

            string cs = "URI=file:test.db";
            var connection = new SQLiteConnection(cs);
            connection.Open();

            if (!connection.TableExists("Users"))
            {
                using (var uow = new AdoNetUnitOfWork(connection))
                {
                    uow.Execute(
                        "CREATE TABLE Users (Id INTEGER PRIMARY KEY AUTOINCREMENT, FirstName TEXT, LastName text, CreatedAtUtc INTEGER)");
                    uow.SaveChanges();
                }
            }

            var users = connection.ToList<User>(new {FirstName = "Gau%"});

            var first = connection.First<User>(new {Id = 1});



            // clear old data
            using (var uow = new AdoNetUnitOfWork(connection))
            {
                using (var cmd = uow.CreateCommand())
                {
                    cmd.CommandText = "SELECT * FROM Users";
                    cmd.AddParameter("id", "983498043903");
                    foreach (var entity in cmd.ToEnumerable<User>())
                    {
                        Console.WriteLine(entity.FirstName);
                    }


                }

                uow.Truncate<User>();
                for (int i = 0; i < 100; i++)
                {
                    uow.Insert(new User { FirstName = "Arne" + i });
                }

                uow.SaveChanges();
            }


        }
开发者ID:jorgenlidholm,项目名称:Griffin.Framework,代码行数:50,代码来源:Program.cs


注:本文中的System.Data.SQLite.SQLiteConnection.TableExists方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。