References System System.Core System.Data System.Windows.Forms System.Xml System.Xml.Linq



using System; using System.Collections; using System.Collections.Generic; using System.Linq; using System.Windows.Forms; namespace TestLinq { static class Program { public class MeoAddress { public int Nr { get; set; } public string Name { get; set; } public string Email { get; set; } } ////// Test pour LINQ to Objects /// Author Didier Meo /// static void TestLinqToObjects() { int[] intArray = { 0, 10, 20, 30, 40, 50, 60, 70, 80, 90 }; // 1) string strResult = "\n iQuery1: \n"; // var iQuery1 = from intObject in intArray //from int intObject in intArray where intObject >= 30 select intObject; foreach (int intObject in iQuery1) { strResult += Convert.ToString(intObject) + " ; "; } // 2) strResult += "\n-----------\n iQuery2: \n"; // var iQuery2 = intArray.Where(intObject => intObject >= 30).Select(intObject => intObject); foreach (int intObject in iQuery2) { strResult += intObject + " ; "; } // 3) strResult += "\n-----------\n iQuery3: \n"; // List<int> lstIntegers = new List<int>(); lstIntegers.AddRange(new int[] { 0, 10, 20, 30, 40, 50, 60, 70, 80, 90 }); var iQuery3 = lstIntegers.Where(Integer => Integer >= 30).Select(Integer => Integer); foreach (int Integer in iQuery3) { strResult += Integer + " ; "; } //----------------------------------------------------------------- strResult += "\n-----------\n strQuery1: \n"; string[] strArray = { "00", "10", "20", "30", "40", "50", "60", "70", "80", "90" }; var strQuery1 = from strObject in strArray where Convert.ToInt32(strObject) >= Convert.ToInt32("30") select strObject; foreach (string strObject in strQuery1) { strResult += strObject + " ; "; } //----------------------------------------------------------------- strResult += "\n-----------\n objQuery1: \n"; ArrayList arlMeoAddresses = new ArrayList(); arlMeoAddresses.Add(new MeoAddress { Nr = 00, Name = "000 000", Email = "000@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 10, Name = "AAA aaa", Email ="aaa@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 20, Name = "BBB bbb", Email = "bbb@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 30, Name = "CCC ccc", Email = "ccc@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 40, Name = "Meo Didier", Email = "didiermeo@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 50, Name = "DDD ddd", Email = "ddd@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 60, Name = "EEE eee", Email = "eee@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 70, Name = "FFF fff", Email = "fff@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 80, Name = "GGG ggg", Email = "ggg@yahoo.fr" }); arlMeoAddresses.Add(new MeoAddress { Nr = 90, Name = "HHH hhh", Email = "hhh@yahoo.fr" }); var objQuery1 = from MeoAddress objMeoAddress in arlMeoAddresses where objMeoAddress.Nr >= 30 //orderby objMeoAddress.Name select objMeoAddress; foreach (MeoAddress objMeoAddress in objQuery1) { strResult += objMeoAddress.Nr + " , " + objMeoAddress.Name + " , " + objMeoAddress.Email + " ; \n"; } //----------------------------------------------------------------- MessageBox.Show(strResult); } ////// Point d'entrée principal de l'application. /// [STAThread] static void Main() { TestLinq.Program.TestLinqToObjects(); } } }
Didier Meo
http://www.meo-x.net

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