using System.Text;
using System.Windows.Forms;

namespace datasettest
{
    public partial class Form1 : Form
    {
        DataSet ds = new DataSet();
        DataTable dt = new DataTable();
        dt.Columns.Add("Columns1");//Columns1为你要定义的列名
        dt.Columns.Add("Columns2");//Columns2为你要定义的列名
        int count = 0;
        public Form1()
        {
            InitializeComponent();
        }
        void function(int i)
        {
            DataRow dtRow = dt.NewRow();
            dtRow["Columns1"] = i.ToString();
            dtRow["Columns2"] = i.ToString();
            dt.Rows.Add(dtRow);
        }
        private void btclick_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < 10; i++)
                function(i);
            ds.Tables.Add(dt);
        }
    }
}