C#读取文本框（TextBox）数据并统计其中最大小值平均值及求出所在数组中位置，在文本框中显示

    //如何读取文本文件到文本框中已在我另一文章中说明        
            int count = this.textBox1.Lines.GetUpperBound(0);
            double sum = 0;
            double aver = 0;
            double mtemp;
            double stemp;
            int mindex=0;
            int sindex=0;
            double ll;
            double l;
            double ma;
            double su;
            double[] p = new double[count];
            double[] a = new double[count];
            double[] s = new double[count];
            double[] m = new double[count];
            double[] array = new double[count];
            string[] lines = textBox4.Text.Split('\n');
            for (int h = 0; h < count; h++)
            {
                p[h] = Convert.ToDouble(lines[h]);//存放文本框中的数据
                sum = sum + p[h];
            }
            aver = sum / count;
            string straver= aver.ToString("f5");//fN 保留N位,四舍五入
            for (int h = 0; h < count; h++)
            {
                // s[h] = (p[h] - aver);
                a[h] = Math.Abs(p[h] - aver);//获取文本框数据与平均值之差的数组,主要围绕数组a进行操作
                array[h] = Math.Abs(p[h] - aver);//获取文本框数据与平均值之差的绝对值数组
            }
            ma = array.Max();
            string strma = ma.ToString("f5");
            su = array.Min();
            string strsu= su.ToString("f5");
            mtemp = a[0];
            stemp = a[0];
            for (int i = 0; i < a.Length; i++)
            {
                if (mtemp < a[i])
                {
                    mtemp = a[i];
                    mindex = i + 1;
                }
            }
            for (int j = 0; j < a.Length; j++)
            {
                if (stemp >= a[j])
                {
                    stemp = a[j];
                    sindex = j + 1;
                }
            }
            textBox2.Text = "测量数据平均值：" + straver;
            textBox2.Text = textBox2.Text + "\r\n" + "测量数据点数：" + count;
            textBox2.Text = textBox2.Text + "\r\n" + "测量数据最大偏离平均值：" + strma;
            textBox2.Text = textBox2.Text + "\r\n" + "测量数据最小偏离平均值："  +strsu;
            textBox2.Text = textBox2.Text + "\r\n" + "最大偏离测量节点数序号：" + mindex;
            textBox2.Text = textBox2.Text + "\r\n" + "最小偏离测量节点数序号：" + sindex;