Mega Code Archive

 

Categories / C# Tutorial / ADO Net

 

Adding a Calculated Column to a DataTable

using System; using System.Data; using System.Data.SqlClient;     class Program     {         static void Main(string[] args)         {             string sqlConnectString = "Data Source=(local);Integrated security=SSPI;Initial Catalog=AdventureWorks;";             string sqlSelect = "SELECT TOP 5 * FROM Sales.SalesOrderDetail";             SqlDataAdapter da = new SqlDataAdapter(sqlSelect, sqlConnectString);             DataTable dt = new DataTable();             da.Fill(dt);             dt.Columns.Add(new DataColumn("ExtendedPrice", typeof(Decimal),"UnitPrice * (1 - UnitPriceDiscount) * OrderQty"));             foreach (DataRow row in dt.Rows)                 Console.WriteLine(row["SalesOrderDetailID"]);         }     }