The SequenceEqual operator compares two sequences of DataRow objects to determine whether they are equal.
public static bool SequenceEqual<T> ( this IEnumerable<T> first, IEnumerable<T> second, IEqualityComparer<T> comparer);
The following code shows how to use The SequenceEqual Operator with and Without a Comparer Object.
using System; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Data; class Program//from w w w. ja v a 2 s. c o m { static void Main(string[] args) { Student[] students = { new Student { Id = 1, Name = "Joe Ruby" }, new Student { Id = 7, Name = "Apache Python" }, new Student { Id = 13, Name = "Scala Sinclair" }, new Student { Id = 72, Name = "Django SQL" } }; DataTable dt1 = GetDataTable(students); IEnumerable<DataRow> seq1 = dt1.AsEnumerable(); DataTable dt2 = GetDataTable(students); IEnumerable<DataRow> seq2 = dt2.AsEnumerable(); bool equal = seq1.SequenceEqual(seq2, System.Data.DataRowComparer.Default); Console.WriteLine("SequenceEqual() with comparer : {0}", equal); equal = seq1.SequenceEqual(seq2); Console.WriteLine("SequenceEqual() without comparer : {0}", equal); } static void OutputDataTableHeader(DataTable dt, int columnWidth) { string format = string.Format("{0}0,-{1}{2}", "{", columnWidth, "}"); // Display the column headings. foreach (DataColumn column in dt.Columns) { Console.Write(format, column.ColumnName); } Console.WriteLine(); foreach (DataColumn column in dt.Columns) { for (int i = 0; i < columnWidth; i++) { Console.Write("="); } } Console.WriteLine(); } static DataTable GetDataTable(Student[] students) { DataTable table = new DataTable(); table.Columns.Add("Id", typeof(Int32)); table.Columns.Add("Name", typeof(string)); foreach (Student student in students) { table.Rows.Add(student.Id, student.Name); } return (table); } } class Student { public int Id; public string Name; }