using System;
using System.Data;
class Program
{
static void Main(string[] args)
{
DataTable dt = new DataTable();
DataColumn pkCol = dt.Columns.Add("Id", typeof(int));
dt.Columns.Add("Field1", typeof(string)).MaxLength = 50;
dt.PrimaryKey = new DataColumn[] {dt.Columns["Id"]};
pkCol.AutoIncrement = true;
pkCol.AutoIncrementSeed = 100;
pkCol.AutoIncrementStep = 10;
for (int i = 1; i <= 5; i++)
dt.Rows.Add(new object[] {null, "Value " + i });
foreach (DataRow row in dt.Rows)
Console.WriteLine("Id = {0}\tField1 = {1}",row["Id"], row["Field1"]);
}
}
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