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IDataReader.NextResult Method

Advances the data reader to the next result, when reading the results of batch SQL statements.

Namespace:  System.Data
Assembly:  System.Data (in System.Data.dll)

bool NextResult()

Return Value

Type: System.Boolean
true if there are more rows; otherwise, false.

Used to process multiple results, which can be obtained by executing batch SQL statements.

By default, the data reader is positioned on the first result.

using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Data.Odbc;

class Program {
   static void Main(string[] args) {

      // string connectionTypeName = "SqlClient";
      // string connectionString = @"Data Source=(local);Initial Catalog=AdventureWorks;Integrated Security=SSPI";

      // string connectionTypeName = "Odbc";
      // string connectionString = @"Driver={SQL Server Native Client 11.0};Server=(local);Database=AdventureWorks2012;Trusted_Connection=Yes";

      string connectionTypeName = "OleDb";
      string connectionString = @"Provider=SQLNCLI11;Data Source=(local);Initial Catalog=AdventureWorks;Integrated Security=SSPI";

      using (IDbConnection connection = DatabaseConnectionFactory.GetConnection(connectionTypeName, connectionString)) {
         IDbCommand command = connection.CreateCommand();
         command.Connection = connection;

         // these 2 queries are executed as a single batch and return 2 separate results
         command.CommandText = "SELECT CountryRegionCode, Name FROM Person.CountryRegion;" + "SELECT CountryRegionCode, StateProvinceCode, Name, StateProvinceID FROM Person.StateProvince;";


         using (IDataReader reader = command.ExecuteReader()) {

            // process the first result

            // use NextResult to move to the second result and verify it is returned
            if (!reader.NextResult())
               throw new InvalidOperationException("Expected second result (StateProvinces) but only one was returned");

            // process the second result



   static void displayCountryRegions(IDataReader reader) {
      if (reader.FieldCount != 2)
         throw new InvalidOperationException("First resultset (CountryRegions) must contain exactly 2 columns");

      while (reader.Read()) {
         Console.WriteLine("CountryRegionCode={0}, Name={1}"
             , reader.GetString(reader.GetOrdinal("CountryRegionCode"))
             , reader.GetString(reader.GetOrdinal("Name")));

   static void displayStateProvinces(IDataReader reader) {
      if (reader.FieldCount != 4)
         throw new InvalidOperationException("Second resultset (StateProvinces) must contain exactly 4 columns");

      while (reader.Read()) {
         Console.WriteLine("CountryRegionCode={0}, StateProvinceCode={1}, Name={2}, StateProvinceID={3}"
             , reader.GetString(reader.GetOrdinal("CountryRegionCode"))
             , reader.GetString(reader.GetOrdinal("StateProvinceCode"))
             , reader.GetString(reader.GetOrdinal("Name"))
             , reader.GetInt32(reader.GetOrdinal("StateProvinceID")));

   class DatabaseConnectionFactory {
      static SqlConnection GetSqlConnection(string connectionString) {
         return new SqlConnection(connectionString);

      static OdbcConnection GetOdbcConnection(string connectionString) {
         return new OdbcConnection(connectionString);

      static OleDbConnection GetOleDbConnection(string connectionString) {
         return new OleDbConnection(connectionString);

      public static IDbConnection GetConnection(string connectionTypeName, string connectionString) {
         switch (connectionTypeName) {
            case "SqlClient":
               return GetSqlConnection(connectionString);
            case "Odbc":
               return GetOdbcConnection(connectionString);
            case "OleDb":
               return GetOleDbConnection(connectionString);
               throw new ArgumentException("Value must be SqlClient, Odbc or OleDb", "connectionTypeName");

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.