Comments by cadsolution (Top 34 by date)

in this my code iam using timing is one to nine then its ok.if i want to use moretha nine then stack.pop() stack empty error shown .please see images.also note red color comments in figure1.and figure2 is after debugging error shown like

here is my error please download below links for better idea.
http://www.mediafire.com/view/4gneoo4uuzb25gb/FIGURE_1%282%29.jpg http://www.mediafire.com/view/regk1u36oyrik37/FIGURE_2%282%29.jpg

here is my code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace txtbox_Content_Sum
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{

int combinedSum = 0;

for (char letter = 'A'; letter <= 'D'; letter++)
{
int sum = 0;
var stack = new Stack<string>();
int stackSum = 0;

foreach (string line in textBox1.Lines)
{
string temp = line.Replace(".", "").Replace(" ", ""); // remove dots and spaces
if (temp == "") continue; // ignore blank line
bool containsLetter = (line.IndexOf(letter) > -1);
char first = temp[0];
char last = temp[temp.Length - 1];

if (Char.IsDigit(first))
{
string numStr = temp.Split('-')[0];
if (!containsLetter) numStr = "0";

if (stack.Count == 0)
{
sum += int.Parse(numStr);
}
else
{
stack.Push(numStr);
}

if (Char.IsDigit(last))
{
int multiplier = last - 48;
char bracket = temp[temp.Length - 2];

int total = 0;
char openChar = '\0';
string tempStr;
if (bracket == '}')
openChar = '{';
else if (bracket == ']')
openChar = '[';
else if (bracket == ')')
openChar = '(';
else if (bracket == '>')
openChar = '<';

do
{
tempStr = stack.Pop();
int num;
if (int.TryParse(tempStr, out num)) total += num;
}
while (tempStr[0] != openChar);

stackSum = (stackSum + total) * multiplier;

if (stack.Count == 0)
{
sum += stackSum;
stackSum = 0;
}
}
}
else
{
stack.Push(first.ToString());
int index = 1;

while (true)
{
if (Char.IsDigit(temp[index])) break;
stack.Push(temp[index].ToString());
index++;
}

string numStr2 = temp.Substring(index).Split('-')[0];
if (!containsLetter) numStr2 = "0";
stack.Push(numStr2);

if (Char.IsDigit(last))
{
int multiplier = last - 48;
char bracket = temp[temp.Length - 2];
int total = 0;
char openChar = '\0';

stack empty error shown when iam using morethan 1-9.
tempStr = stack.Pop();

please solve this problem.i could not solve this my side.