这段代码是啥意思啊？？？

Question

public static DataTable ExecuteDataTable(string sql, params SqlParameter[] parameters) { string dataDir = AppDomain.CurrentDomain.BaseDirectory; if (dataDir.EndsWith(@"\bin\Debug\") || dataDir.EndsWith(@"\bin\Release\")) { dataDir = System.IO.Directory.GetParent(dataDir).Parent.Parent.FullName; AppDomain.CurrentDomain.SetData("DataDirectory", dataDir); } using (SqlConnection conn = new SqlConnection(strCon)) { conn.Open(); using (SqlCommand cmd = conn.CreateCommand()) { cmd.CommandText = sql; foreach (SqlParameter parameter in parameters) { cmd.Parameters.Add(parameter); } DataSet dataset = new DataSet(); SqlDataAdapter adapter = new SqlDataAdapter(cmd); adapter.Fill(dataset); return dataset.Tables[0]; } } }

Answer 1

字段代码是连接数据库，进行条件查询，然后把数据返回，返回类型是DataTable.