index of same digits in any number

hi , Kirtan.......
I need ur help..........
plz can u help me in my Question "inserting values in table" .........

Here is Your Full Code With Repeat Detection :) and Fully Tested

 
//Function to Check if character is Present More than Twise 
        public bool checkReapeat(char c,string str)
        {
            int reapatcount = 0;
            int i= 0;
            bool isReapeat = true;
            Char[] CharArray = str.ToCharArray();

            for (i = 0; i <= CharArray.Length - 1; i++)
            {
                if (CharArray[i] == c)
                {
                    reapatcount++;
                }
            }
            
            if (reapatcount <= 2)
            {
                isReapeat = false;
            }
            else
            {
                isReapeat = true;
            }
            return isReapeat;
        }


// Use the Above function and Do our Work 

 private void button1_Click(object sender, EventArgs e)
        {
            char[] CharArray = textBox1.Text.ToCharArray();
            bool ReapeatisThere = true;
           //Scanning for Reapeated Digits
            foreach (char charac in CharArray)
            {
                ReapeatisThere = checkReapeat(charac,textBox1.Text.Trim());
                if(ReapeatisThere == true)
                {
                    break;
                }
            }
            //Proceed Further if No Reapeted Digits Found 
             if ( ReapeatisThere == false )
            {
            char n = Convert.ToChar(textBox2.Text.Trim());
            double Final=0;
            int crev=0;
            int reapeat = 0;
            for (int i = CharArray.Length - 1; i >= 0; i--)
            {
                int num = Convert.ToInt32(textBox2.Text.Trim());
                if (CharArray[i] == n)
                {
                    Final = Final + num * (Math.Pow(10,crev));
                    reapeat++;
                }
                crev++;
            }
                MessageBox.Show("Answer is := " + Final);
            }
            else 
            {
                MessageBox.Show("Repeated Digits Found in Number !!");
            }
        }

Happy Coding :)

I am new to this website...
can u plz tell me how to mark it as answer

thank u very much for ur gr8 help.....
Can U tell me one more thing...As  I am making codes I am testing it for all possible values...In some cases I want to handle exceptions and display error message.....Like ,In above code which u gave me, I want that If user repeates any digit more than twice then computer should display error message as "Enter correct number"..........Like this how can I display error messages in other codes too.

If suppose we enter any number suppose 2724 in  textbox1 and in textbox2 if user enter 2 (we have enter  digit whose placevalue is to be found)...In combobox we select "+".
On button click I want the answer to be (2*1000)+(2*10)=2000+20=2020...
I tried to make code for this logic but i think its incorrect ,also its giving errors...

Can you Explain a bit more what your code does ? or what you want to Achieve ?

hi!!!
The code which I am using for placevalue is as follows:
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 PV
{
    public partial class Form1 : Form
    {
        string aa;
        string co1;
        int a;
        int c;
        int i;
        int di;
        int f;
        int d1;
        public Form1()
        {
            InitializeComponent();
        }
       
        void retfirst(string x)
        {
            int o;
            aa = this.textBox1.Text;
            o = aa.IndexOf(x);
            a = Convert.ToInt32(o);
                     
        }
        public void aaaa()
        {
            retfirst(this.textBox2.Text);
            c = (aa.Length) - 1;
            co1 = "1";
            i = (c - a);
            while (i > 0)
            {
                co1 = (co1 + "0");
                i = (i - 1);
            }
            di = int.Parse(co1);
            f = int.Parse(this.textBox2.Text);
            d1 = (f * di);
        }
      private void button1_Click(object sender, EventArgs e)
        {
            aaaa();
           
            this.textBox3.Text = d1.ToString();
           
            this.textBox3.Enabled = true;
        }
 
Now the problem is that I could not integrate ur and mine code together,because here I have to find palcevalue of single digit in a number but when I apply loop (which u gave me),in that case how will I apply code for placevalue for occurence of same digit second time .....
Can u please help me in joining codes together for finding placevalue of any digit which is occuring twice in a number...

Now after finding index how can I find palcevalue of numbers  at each index and then find sum or difference....
for finding placevalue I have made a function ,but can't use it with the function which u provided ....
How can I amke such application in C#

This Will Find Index of All 'a' in String you can find number using same logic


               string s = textBox1.Text;
            char[] chararray = s.ToCharArray();
            for (int i = 0; i<= s.Length-1; i++)
            {
                if (chararray[i] == 'a')
                {
                    listBox1.Items.Add(i);
                }
            }

Happy coding :)


The easiest way is probably to use the String.IndexOf() method;

string inputNumber = InputNumberTextBox.Text; string inputDigit = InputDigitTextBox.Text; int index = inputNumber.IndexOf(inputDigit);