Retrieve Values from a DataRow Array using different techniques

Mukesh Kumar
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Retrieve Values from a DataRow Array using different techniques

In this example we are going to see how to retrieve data values from a DataRow Array using different techniques.

Here we are using five different ways to access the data in a DataRow array:

Using a column ordinal.
Using a column name.
Using the strongly typed accessor Field<T> with a column ordinal.
Using the strongly typed accessor Field<T> with a column name.
Using the strongly typed accessor Field<T> with a column name and a data row version.

using System;
using System.Data.SqlClient;
using System.Data;

namespace RetrieveValuesfromDataRowArray
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a connection string
            string objConnectString = "Data Source=(local);Initial Catalog=AdventureWorks;User ID=sa;Password=sa1234";

            string objQuery = "SELECT ProductID,Name,ProductNumber,StandardCost FROM Production.Product WHERE ProductID BETWEEN 514 AND 522";

            // Create a data adapter
            SqlDataAdapter objDataAdapter= new SqlDataAdapter(objQuery, objConnectString);

            // Fill a DataTable using DataAdapter
            DataTable objDt = new DataTable();
            objDataAdapter.Fill(objDt);

            // Create and fill the DataRow array
            DataRow[] objDataRowArray = new DataRow[objDt.Rows.Count];
            objDt.Rows.CopyTo(objDataRowArray, 0);

            // Using different techniques access DataRow array Product Name value in row 2
            Console.WriteLine("Product Name = {0}", objDataRowArray[1][1]);
            Console.WriteLine("Product Name = {0}", objDataRowArray[1]["Name"]);
            Console.WriteLine("Product Name = {0}", objDataRowArray[1]["Name", DataRowVersion.Default]);
            Console.WriteLine("Product Name = {0}", objDataRowArray[1].Field<string>(1));
            Console.WriteLine("Product Name = {0}", objDataRowArray[1].Field<string>("Name"));
            Console.WriteLine("Product Name = {0}", objDataRowArray[1].Field<string>("Name", DataRowVersion.Default));

            Console.WriteLine("\nPress any key to continue.");
            Console.ReadLine();

        }
    }
}