RPNV0.2

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnCalculate_Click(object sender, EventArgs e)
        {
            var MainStack = new Stack<float>();
            Int32 top = 0;

            if (string.IsNullOrEmpty(txtInput.Text))
            {
                MessageBox.Show("Sorry, no input was found");
            }
            else
            {
                NewCalc(MainStack, Top);
            }
        }

        private void NewCalc(Stack<float> mainstack, Int32 top)
        {
            Boolean ValidExpression = true;
            String Temp = "";
            Char Current;
            String Input = txtInput.Text;

            for (int i = 0; i < txtInput.Text.Length; i++)
            {
                Current = Input[i];

                if (char.IsWhiteSpace(Current))
                {
                    MessageBox.Show("Test");
                }
            }

        }
    }
}