?using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

/// <summary>
/// ycl 的摘要說明
/// </summary>
public class ycl
{
	public ycl()
	{
		//
		// TODO: 在此處添加構造函數(shù)邏輯
		//
	}
    public void get_GDITOGDP(DataSet ds,DataSet dt)
    {
        int Count_R = ds.Tables[0].Rows.Count;//ds的行數(shù)
        int Count_C = ds.Tables[0].Columns.Count;//ds的列數(shù)
        int dt_Count_C = dt.Tables[0].Columns.Count;//讀取dt的列數(shù)

        //定義數(shù)組
        float[,] values = new float[Count_R, Count_C];
        float[,] temp = new float[Count_R, Count_C];
        

        //定義變量
        int i, j;



        //讀取ds數(shù)據(jù)集里的數(shù)據(jù)到values數(shù)組中
       for (i = 0; i < Count_R; i++)
            for (j = 0; j < Count_C; j++)
                values[i, j] = Convert.ToSingle(ds.Tables[0].Rows[i][j].ToString());

        for (i = 0; i<Count_R; i++)
            temp[i, 0] = values[i, 0];
        
        for (j = 1; j < Count_C; j++)
            temp[0, j] = Convert.ToSingle(100);
                
        for(i=1;i<Count_R;i++)

        for (j = 1; j < Count_C; j++)
            temp[i, j] = Convert.ToSingle(values[i, j] / values[i-1, j] * temp[i-1,j]);
        
        //把計算后的結果，寫入到dt數(shù)據(jù)集中  

    for (i = 0; i<Count_R; i++)
            {  
             DataRow newRow = dt.Tables[dt.Tables[0].ToString()].NewRow();
             for(j=0;j< Count_C;j++)          
                newRow[j] = temp[i,j];               
             dt.Tables[dt.Tables[0].ToString()].Rows.Add(newRow);  
            }
        
    }
}