static void GenericDataAdapterForMySql()
{
Console.WriteLine("Mysql database (sample server, may respond slowly)");
var dbFactory = new DbFactory(MySql.Data.MySqlClient.MySqlClientFactory.Instance)
{
LastInsertIdSelectText = "SELECT LAST_INSERT_ID()",
IdentifierFormat = "`{0}`"
};
var dbCmdBuilder = new NReco.Data.DbCommandBuilder(dbFactory);
var mysqlConnStr = "Server=db4free.net;Database=nreco_sampledb;Uid=nreco_sampledb;Pwd=HRt5UbVD;";
using (var conn = dbFactory.CreateConnection()) {
conn.ConnectionString = mysqlConnStr;
var selectCmd = dbCmdBuilder.GetSelectCommand(new Query("orders"));
selectCmd.Connection = conn;
var dsDataAdapter = new GenericDataAdapter(dbCmdBuilder, (DbCommand)selectCmd);
var ds = new DataSet();
dsDataAdapter.Fill(ds, "orders");
Console.WriteLine("Fill: loaded {0} rows", ds.Tables["orders"].Rows.Count);
}
}
static void GenericDataAdapterForSqlite()
{
Console.WriteLine("Sqlite database (northwind.db)");
var dbFactory = new DbFactory(Microsoft.Data.Sqlite.SqliteFactory.Instance)
{
LastInsertIdSelectText = "SELECT last_insert_rowid()",
IdentifierFormat = "\"{0}\""
};
var dbCmdBuilder = new NReco.Data.DbCommandBuilder(dbFactory);
var sqliteDbPath = Path.Combine(Directory.GetCurrentDirectory(), "northwind.db");
var sqliteConnStr = String.Format("Data Source={0}", sqliteDbPath);
using (var conn = dbFactory.CreateConnection()) {
conn.ConnectionString = sqliteConnStr;
var selectCmd = dbCmdBuilder.GetSelectCommand(new Query("Employees"));
selectCmd.Connection = conn;
var dsDataAdapter = new GenericDataAdapter(dbCmdBuilder, (DbCommand)selectCmd);
var ds = new DataSet();
dsDataAdapter.Fill(ds, "Employees");
Console.WriteLine("Fill: loaded {0} rows", ds.Tables["Employees"].Rows.Count);
// lets set PK
ds.Tables["Employees"].PrimaryKey = new[] { ds.Tables["Employees"].Columns["EmployeeID"] };
ds.Tables["Employees"].Columns["Deleted"].ReadOnly = true; // do not insert/update this column
// and modify some rows
ds.Tables["Employees"].Rows.Find(1)["FirstName"] = "Nancy1";
var newRow = ds.Tables["Employees"].NewRow();
newRow["EmployeeID"] = 10;
newRow["FirstName"] = "John";
newRow["LastName"] = "Smith";
newRow["ReportsTo"] = 2;
newRow["Deleted"] = 1; // this will be ignored
ds.Tables["Employees"].Rows.Add(newRow);
Console.WriteLine("Update (insert+update): affected {0} rows", dsDataAdapter.Update(ds.Tables["Employees"]));
ds.Tables["Employees"].Rows.Find(10).Delete();
Console.WriteLine("Update (delete): affected {0} rows", dsDataAdapter.Update(ds.Tables["Employees"]));
}
Console.WriteLine();
}
