指数图 C# .NET Framework

Question

我从 datagridview1 中提取值来计算指数方程。

foreach (DataRow pr in Global_var.data_source.Tables[0].Rows)
{
    try
    {
        x1 = (double)pr[0];
        y1 = (double)pr[1];
        chart1.Series[1].Points.AddXY(x1, y1);
        chart1.Series[1].ChartType = SeriesChartType.Spline;
    }
    catch
    {
        x1 = 0;
        y1 = 0;
        MessageBox.Show("");
    }
} 

int number_of_rows = Global_var.data_source.Tables[0].Rows.Count;

foreach (DataRow pr in Global_var.data_source.Tables[0].Rows)
{
    xpriemer += (double)pr[0];
    lny *= (double)pr[1];
    sxy += (double)pr[0] *Math.Log((double)pr[1]);
    sxx += (double)pr[0] * (double)pr[0];
    syy += Math.Log((double)pr[1]) * Math.Log((double)pr[1]);
}        

xpriemer /= (double)number_of_rows;
xpriemer = Math.Round(xpriemer, 4);
/////////////
lny = Math.Round(lny, 4);
lnyc = Math.Log(lny) / (double)number_of_rows;
lnyc = Math.Round(lnyc, 4);
//////////
sxyc = sxy - (number_of_rows * xpriemer * lnyc);
sxyc = Math.Round(sxyc, 4);
///////////
sxxc = sxx - (number_of_rows * xpriemer * xpriemer);
sxxc = Math.Round(sxxc, 4);
///////////
B = sxyc / sxxc;
B = Math.Round(B, 4);
//////////
A = Math.Exp(lnyc - B * xpriemer);
A = Math.Round(A, 4);
////////////////
syyc = syy - number_of_rows * lnyc * lnyc;
///////
r = (sxyc / (Math.Sqrt(sxxc) * Math.Sqrt(syyc)));
r2 = sxyc * sxyc / (sxxc * syyc);

在我需要计算 X1 列中每一行的 Y1 指数后，如下所示： y1expo= A * Math.Pow(e * B*不知道)

e = 2.71828182;

然后将 y1exponential 的值放入图表 1 中。 我是否需要创建第二个 datagridview？，将 x1,y1expo 值放在那里以创建指数样条？ 示例： 来源：desmos.com

我的程序：